./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.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_42-trylock2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --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 10:10:43,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:10:43,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:10:43,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:10:43,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:10:43,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:10:43,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:10:43,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:10:43,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:10:43,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:10:43,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:10:43,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:10:43,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:10:43,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:10:43,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:10:43,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:10:43,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:10:43,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:10:43,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:10:43,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:10:43,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:10:43,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:10:43,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:10:43,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:10:43,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:10:43,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:10:43,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:10:43,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:10:43,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:10:43,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:10:43,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:10:43,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:10:43,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:10:43,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:10:43,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:10:43,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:10:43,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:10:43,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:10:43,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:10:43,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:10:43,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:10:43,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:10:43,946 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:10:43,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:10:43,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:10:43,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:10:43,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:10:43,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:10:43,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:10:43,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:10:43,949 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:10:43,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:10:43,949 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:10:43,949 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:10:43,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:10:43,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:10:43,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:10:43,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:10:43,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:10:43,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:10:43,950 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:10:43,950 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:10:43,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:10:43,951 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:10:43,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:10:43,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:10:43,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:10:43,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:10:43,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:10:43,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:10:43,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:10:43,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:10:43,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:10:43,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:10:43,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:10:43,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:10:43,953 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:10:43,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:10:43,953 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:10:43,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:10:44,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:10:44,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:10:44,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:10:44,184 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:10:44,184 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:10:44,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-30 10:10:45,233 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:10:45,433 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:10:45,434 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-30 10:10:45,446 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec26c1d95/a6abc1877a3a45aaaf4c79d65b87dfef/FLAGb0ddb7053 [2023-08-30 10:10:45,465 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec26c1d95/a6abc1877a3a45aaaf4c79d65b87dfef [2023-08-30 10:10:45,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:10:45,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:10:45,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:10:45,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:10:45,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:10:45,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46288b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45, skipping insertion in model container [2023-08-30 10:10:45,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:10:45,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:10:45,752 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_42-trylock2_racefree.i[30176,30189] [2023-08-30 10:10:45,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:10:45,786 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:10:45,814 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_42-trylock2_racefree.i[30176,30189] [2023-08-30 10:10:45,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:10:45,867 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:10:45,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45 WrapperNode [2023-08-30 10:10:45,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:10:45,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:10:45,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:10:45,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:10:45,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,903 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-08-30 10:10:45,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:10:45,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:10:45,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:10:45,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:10:45,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,923 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:10:45,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:10:45,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:10:45,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:10:45,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (1/1) ... [2023-08-30 10:10:45,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:10:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:10:45,958 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 10:10:45,966 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 10:10:45,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:10:45,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:10:45,981 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:10:45,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:10:45,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:10:45,981 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:10:45,982 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:10:45,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:10:45,982 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-30 10:10:45,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:10:45,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:10:45,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:10:45,983 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 10:10:46,072 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:10:46,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:10:46,336 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:10:46,342 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:10:46,342 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-30 10:10:46,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:10:46 BoogieIcfgContainer [2023-08-30 10:10:46,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:10:46,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:10:46,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:10:46,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:10:46,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:10:45" (1/3) ... [2023-08-30 10:10:46,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38448ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:10:46, skipping insertion in model container [2023-08-30 10:10:46,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:10:45" (2/3) ... [2023-08-30 10:10:46,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38448ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:10:46, skipping insertion in model container [2023-08-30 10:10:46,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:10:46" (3/3) ... [2023-08-30 10:10:46,349 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-08-30 10:10:46,353 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:10:46,359 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:10:46,359 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 10:10:46,359 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:10:46,411 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:10:46,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 204 transitions, 416 flow [2023-08-30 10:10:46,488 INFO L130 PetriNetUnfolder]: 45/285 cut-off events. [2023-08-30 10:10:46,488 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:10:46,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 285 events. 45/285 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1048 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-08-30 10:10:46,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 204 transitions, 416 flow [2023-08-30 10:10:46,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 201 transitions, 410 flow [2023-08-30 10:10:46,505 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:10:46,515 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 201 transitions, 410 flow [2023-08-30 10:10:46,517 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 201 transitions, 410 flow [2023-08-30 10:10:46,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 201 transitions, 410 flow [2023-08-30 10:10:46,559 INFO L130 PetriNetUnfolder]: 44/282 cut-off events. [2023-08-30 10:10:46,559 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:10:46,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 282 events. 44/282 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1049 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-08-30 10:10:46,564 INFO L119 LiptonReduction]: Number of co-enabled transitions 12558 [2023-08-30 10:10:49,575 INFO L134 LiptonReduction]: Checked pairs total: 24963 [2023-08-30 10:10:49,576 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-30 10:10:49,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:10:49,593 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;@1e87803a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:10:49,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:10:49,597 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2023-08-30 10:10:49,597 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:10:49,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:49,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:10:49,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:49,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash 24283485, now seen corresponding path program 1 times [2023-08-30 10:10:49,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:49,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708097862] [2023-08-30 10:10:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:49,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:49,801 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 10:10:49,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:49,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708097862] [2023-08-30 10:10:49,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708097862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:49,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:49,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:10:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570406287] [2023-08-30 10:10:49,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:49,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:10:49,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:10:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:10:49,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 367 [2023-08-30 10:10:49,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 87 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:49,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:49,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 367 [2023-08-30 10:10:49,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:50,013 INFO L130 PetriNetUnfolder]: 505/1187 cut-off events. [2023-08-30 10:10:50,013 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:10:50,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 1187 events. 505/1187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6795 event pairs, 0 based on Foata normal form. 192/1110 useless extension candidates. Maximal degree in co-relation 2185. Up to 1009 conditions per place. [2023-08-30 10:10:50,019 INFO L137 encePairwiseOnDemand]: 337/367 looper letters, 73 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 10:10:50,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 324 flow [2023-08-30 10:10:50,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:10:50,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:10:50,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2023-08-30 10:10:50,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594913714804723 [2023-08-30 10:10:50,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2023-08-30 10:10:50,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2023-08-30 10:10:50,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:50,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2023-08-30 10:10:50,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,040 INFO L175 Difference]: Start difference. First operand has 65 places, 87 transitions, 182 flow. Second operand 3 states and 616 transitions. [2023-08-30 10:10:50,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 324 flow [2023-08-30 10:10:50,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:10:50,045 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 132 flow [2023-08-30 10:10:50,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-30 10:10:50,048 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2023-08-30 10:10:50,049 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 132 flow [2023-08-30 10:10:50,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:50,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:10:50,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:10:50,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:50,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:50,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1861613600, now seen corresponding path program 1 times [2023-08-30 10:10:50,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718778733] [2023-08-30 10:10:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:50,135 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 10:10:50,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:50,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718778733] [2023-08-30 10:10:50,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718778733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:50,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:50,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:10:50,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564061393] [2023-08-30 10:10:50,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:50,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:10:50,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:50,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:10:50,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:10:50,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 367 [2023-08-30 10:10:50,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:50,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 367 [2023-08-30 10:10:50,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:50,256 INFO L130 PetriNetUnfolder]: 499/1043 cut-off events. [2023-08-30 10:10:50,257 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-08-30 10:10:50,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 1043 events. 499/1043 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5434 event pairs, 76 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 2101. Up to 902 conditions per place. [2023-08-30 10:10:50,261 INFO L137 encePairwiseOnDemand]: 362/367 looper letters, 66 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 10:10:50,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 309 flow [2023-08-30 10:10:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:10:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:10:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-30 10:10:50,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522252497729337 [2023-08-30 10:10:50,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-30 10:10:50,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-30 10:10:50,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:50,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-30 10:10:50,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,279 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 132 flow. Second operand 3 states and 575 transitions. [2023-08-30 10:10:50,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 309 flow [2023-08-30 10:10:50,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:10:50,281 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 132 flow [2023-08-30 10:10:50,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-30 10:10:50,282 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2023-08-30 10:10:50,282 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 132 flow [2023-08-30 10:10:50,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:50,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:50,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:10:50,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:50,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1582785317, now seen corresponding path program 1 times [2023-08-30 10:10:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:50,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752854721] [2023-08-30 10:10:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:50,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:50,369 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 10:10:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752854721] [2023-08-30 10:10:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752854721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:50,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:50,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:10:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302140237] [2023-08-30 10:10:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:50,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:10:50,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:10:50,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:10:50,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 367 [2023-08-30 10:10:50,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:50,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 367 [2023-08-30 10:10:50,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:50,533 INFO L130 PetriNetUnfolder]: 476/1000 cut-off events. [2023-08-30 10:10:50,533 INFO L131 PetriNetUnfolder]: For 58/59 co-relation queries the response was YES. [2023-08-30 10:10:50,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 1000 events. 476/1000 cut-off events. For 58/59 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5169 event pairs, 44 based on Foata normal form. 1/826 useless extension candidates. Maximal degree in co-relation 2047. Up to 679 conditions per place. [2023-08-30 10:10:50,536 INFO L137 encePairwiseOnDemand]: 363/367 looper letters, 85 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2023-08-30 10:10:50,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 96 transitions, 396 flow [2023-08-30 10:10:50,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:10:50,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:10:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 761 transitions. [2023-08-30 10:10:50,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183923705722071 [2023-08-30 10:10:50,538 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 761 transitions. [2023-08-30 10:10:50,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 761 transitions. [2023-08-30 10:10:50,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:50,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 761 transitions. [2023-08-30 10:10:50,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,542 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,542 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 132 flow. Second operand 4 states and 761 transitions. [2023-08-30 10:10:50,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 96 transitions, 396 flow [2023-08-30 10:10:50,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:10:50,544 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 132 flow [2023-08-30 10:10:50,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=126, 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=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2023-08-30 10:10:50,544 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2023-08-30 10:10:50,544 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 132 flow [2023-08-30 10:10:50,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:50,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:50,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:10:50,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:50,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:50,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1582785299, now seen corresponding path program 1 times [2023-08-30 10:10:50,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:50,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848748199] [2023-08-30 10:10:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:50,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:50,607 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 10:10:50,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:50,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848748199] [2023-08-30 10:10:50,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848748199] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:50,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:50,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:10:50,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944285233] [2023-08-30 10:10:50,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:50,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:10:50,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:50,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:10:50,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:10:50,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 367 [2023-08-30 10:10:50,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:50,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 367 [2023-08-30 10:10:50,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:50,767 INFO L130 PetriNetUnfolder]: 453/955 cut-off events. [2023-08-30 10:10:50,769 INFO L131 PetriNetUnfolder]: For 58/59 co-relation queries the response was YES. [2023-08-30 10:10:50,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2004 conditions, 955 events. 453/955 cut-off events. For 58/59 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4861 event pairs, 42 based on Foata normal form. 1/806 useless extension candidates. Maximal degree in co-relation 1976. Up to 679 conditions per place. [2023-08-30 10:10:50,772 INFO L137 encePairwiseOnDemand]: 363/367 looper letters, 84 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2023-08-30 10:10:50,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 95 transitions, 394 flow [2023-08-30 10:10:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:10:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:10:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 760 transitions. [2023-08-30 10:10:50,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177111716621253 [2023-08-30 10:10:50,775 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 760 transitions. [2023-08-30 10:10:50,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 760 transitions. [2023-08-30 10:10:50,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:50,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 760 transitions. [2023-08-30 10:10:50,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.0) internal successors, (760), 4 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 10:10:50,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,782 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,782 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 132 flow. Second operand 4 states and 760 transitions. [2023-08-30 10:10:50,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 95 transitions, 394 flow [2023-08-30 10:10:50,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 95 transitions, 388 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:10:50,785 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 130 flow [2023-08-30 10:10:50,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-30 10:10:50,786 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-30 10:10:50,786 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 130 flow [2023-08-30 10:10:50,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:50,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:50,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:10:50,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:50,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:50,788 INFO L85 PathProgramCache]: Analyzing trace with hash -99770074, now seen corresponding path program 1 times [2023-08-30 10:10:50,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:50,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931841504] [2023-08-30 10:10:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:50,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:50,824 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 10:10:50,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:50,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931841504] [2023-08-30 10:10:50,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931841504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:50,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:50,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:10:50,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471221120] [2023-08-30 10:10:50,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:50,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:10:50,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:10:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:10:50,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 367 [2023-08-30 10:10:50,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:50,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 367 [2023-08-30 10:10:50,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:50,930 INFO L130 PetriNetUnfolder]: 419/957 cut-off events. [2023-08-30 10:10:50,930 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-30 10:10:50,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 957 events. 419/957 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4714 event pairs, 199 based on Foata normal form. 0/866 useless extension candidates. Maximal degree in co-relation 1939. Up to 521 conditions per place. [2023-08-30 10:10:50,933 INFO L137 encePairwiseOnDemand]: 358/367 looper letters, 68 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-30 10:10:50,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 334 flow [2023-08-30 10:10:50,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:10:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:10:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-08-30 10:10:50,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277020890099909 [2023-08-30 10:10:50,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-08-30 10:10:50,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-08-30 10:10:50,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:50,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-08-30 10:10:50,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,938 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 130 flow. Second operand 3 states and 581 transitions. [2023-08-30 10:10:50,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 334 flow [2023-08-30 10:10:50,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 328 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:10:50,940 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 150 flow [2023-08-30 10:10:50,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-30 10:10:50,941 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2023-08-30 10:10:50,941 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 150 flow [2023-08-30 10:10:50,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:50,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:50,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:50,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:10:50,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:50,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:50,942 INFO L85 PathProgramCache]: Analyzing trace with hash -132328386, now seen corresponding path program 1 times [2023-08-30 10:10:50,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:50,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141473546] [2023-08-30 10:10:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:50,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:50,992 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 10:10:50,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:50,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141473546] [2023-08-30 10:10:50,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141473546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:50,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:50,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:10:50,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537042258] [2023-08-30 10:10:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:50,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:10:50,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:10:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:10:51,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 367 [2023-08-30 10:10:51,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:51,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 367 [2023-08-30 10:10:51,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:51,154 INFO L130 PetriNetUnfolder]: 397/901 cut-off events. [2023-08-30 10:10:51,154 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-30 10:10:51,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 901 events. 397/901 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4328 event pairs, 175 based on Foata normal form. 0/864 useless extension candidates. Maximal degree in co-relation 1920. Up to 471 conditions per place. [2023-08-30 10:10:51,157 INFO L137 encePairwiseOnDemand]: 361/367 looper letters, 102 selfloop transitions, 7 changer transitions 3/120 dead transitions. [2023-08-30 10:10:51,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 120 transitions, 530 flow [2023-08-30 10:10:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:10:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:10:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 933 transitions. [2023-08-30 10:10:51,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084468664850136 [2023-08-30 10:10:51,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 933 transitions. [2023-08-30 10:10:51,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 933 transitions. [2023-08-30 10:10:51,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:51,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 933 transitions. [2023-08-30 10:10:51,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,163 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,163 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 150 flow. Second operand 5 states and 933 transitions. [2023-08-30 10:10:51,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 120 transitions, 530 flow [2023-08-30 10:10:51,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 120 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:10:51,166 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 156 flow [2023-08-30 10:10:51,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-30 10:10:51,167 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-30 10:10:51,167 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 156 flow [2023-08-30 10:10:51,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:51,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:51,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:10:51,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:51,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:51,168 INFO L85 PathProgramCache]: Analyzing trace with hash -132328404, now seen corresponding path program 1 times [2023-08-30 10:10:51,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:51,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751425079] [2023-08-30 10:10:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:51,215 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 10:10:51,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:51,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751425079] [2023-08-30 10:10:51,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751425079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:51,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:51,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:10:51,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430418921] [2023-08-30 10:10:51,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:51,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:10:51,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:10:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:10:51,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 367 [2023-08-30 10:10:51,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:51,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 367 [2023-08-30 10:10:51,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:51,368 INFO L130 PetriNetUnfolder]: 354/800 cut-off events. [2023-08-30 10:10:51,368 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-08-30 10:10:51,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 800 events. 354/800 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3650 event pairs, 174 based on Foata normal form. 25/790 useless extension candidates. Maximal degree in co-relation 1717. Up to 429 conditions per place. [2023-08-30 10:10:51,371 INFO L137 encePairwiseOnDemand]: 361/367 looper letters, 93 selfloop transitions, 5 changer transitions 10/115 dead transitions. [2023-08-30 10:10:51,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 504 flow [2023-08-30 10:10:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:10:51,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:10:51,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 929 transitions. [2023-08-30 10:10:51,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062670299727521 [2023-08-30 10:10:51,373 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 929 transitions. [2023-08-30 10:10:51,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 929 transitions. [2023-08-30 10:10:51,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:51,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 929 transitions. [2023-08-30 10:10:51,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.8) internal successors, (929), 5 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,377 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,378 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 156 flow. Second operand 5 states and 929 transitions. [2023-08-30 10:10:51,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 504 flow [2023-08-30 10:10:51,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 115 transitions, 497 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:10:51,380 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 131 flow [2023-08-30 10:10:51,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2023-08-30 10:10:51,380 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-30 10:10:51,380 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 131 flow [2023-08-30 10:10:51,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:51,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:51,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:10:51,381 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:51,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:51,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1191155778, now seen corresponding path program 1 times [2023-08-30 10:10:51,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:51,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562683313] [2023-08-30 10:10:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:51,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:51,433 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 10:10:51,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:51,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562683313] [2023-08-30 10:10:51,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562683313] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:10:51,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334797107] [2023-08-30 10:10:51,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:51,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:10:51,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:10:51,436 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 10:10:51,439 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 10:10:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:51,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:10:51,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:10:51,585 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 10:10:51,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:10:51,603 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 10:10:51,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334797107] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:10:51,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:10:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:10:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700148930] [2023-08-30 10:10:51,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:10:51,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:10:51,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:10:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:10:51,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 367 [2023-08-30 10:10:51,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:51,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 367 [2023-08-30 10:10:51,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:51,661 INFO L130 PetriNetUnfolder]: 32/87 cut-off events. [2023-08-30 10:10:51,661 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 10:10:51,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 87 events. 32/87 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 174 event pairs, 0 based on Foata normal form. 17/104 useless extension candidates. Maximal degree in co-relation 204. Up to 66 conditions per place. [2023-08-30 10:10:51,662 INFO L137 encePairwiseOnDemand]: 364/367 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-08-30 10:10:51,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 187 flow [2023-08-30 10:10:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:10:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:10:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 702 transitions. [2023-08-30 10:10:51,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782016348773842 [2023-08-30 10:10:51,663 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 702 transitions. [2023-08-30 10:10:51,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 702 transitions. [2023-08-30 10:10:51,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:51,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 702 transitions. [2023-08-30 10:10:51,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,669 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,669 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 131 flow. Second operand 4 states and 702 transitions. [2023-08-30 10:10:51,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 187 flow [2023-08-30 10:10:51,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 155 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-30 10:10:51,671 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-30 10:10:51,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-30 10:10:51,673 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -37 predicate places. [2023-08-30 10:10:51,673 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-30 10:10:51,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 10:10:51,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 10:10:51,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 10:10:51,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 10:10:51,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 10:10:51,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 10:10:51,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 10:10:51,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 10:10:51,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 10:10:51,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 10:10:51,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 10:10:51,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 10:10:51,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 10:10:51,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 10:10:51,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 10:10:51,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 10:10:51,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 10:10:51,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 10:10:51,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 10:10:51,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 10:10:51,691 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 10:10:51,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:10:51,885 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:51,887 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,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:10:51,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 204 transitions, 416 flow [2023-08-30 10:10:51,912 INFO L130 PetriNetUnfolder]: 45/285 cut-off events. [2023-08-30 10:10:51,913 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:10:51,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 285 events. 45/285 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1048 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-08-30 10:10:51,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 204 transitions, 416 flow [2023-08-30 10:10:51,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 195 transitions, 395 flow [2023-08-30 10:10:51,915 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:10:51,915 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 195 transitions, 395 flow [2023-08-30 10:10:51,915 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 195 transitions, 395 flow [2023-08-30 10:10:51,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 195 transitions, 395 flow [2023-08-30 10:10:51,926 INFO L130 PetriNetUnfolder]: 44/276 cut-off events. [2023-08-30 10:10:51,926 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:10:51,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 276 events. 44/276 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1037 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-08-30 10:10:51,930 INFO L119 LiptonReduction]: Number of co-enabled transitions 12558 [2023-08-30 10:10:54,747 INFO L134 LiptonReduction]: Checked pairs total: 24380 [2023-08-30 10:10:54,748 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-30 10:10:54,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:10:54,749 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;@1e87803a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:10:54,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:10:54,751 INFO L130 PetriNetUnfolder]: 3/28 cut-off events. [2023-08-30 10:10:54,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:10:54,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:54,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:10:54,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:10:54,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:54,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1952599719, now seen corresponding path program 1 times [2023-08-30 10:10:54,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:54,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433917594] [2023-08-30 10:10:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:54,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:10:54,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:10:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:10:54,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:10:54,775 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:10:54,776 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:10:54,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:10:54,776 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:10:54,776 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:10:54,777 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:10:54,777 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:10:54,791 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:10:54,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 275 transitions, 568 flow [2023-08-30 10:10:54,821 INFO L130 PetriNetUnfolder]: 76/473 cut-off events. [2023-08-30 10:10:54,821 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:10:54,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 473 events. 76/473 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2000 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 287. Up to 9 conditions per place. [2023-08-30 10:10:54,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 275 transitions, 568 flow [2023-08-30 10:10:54,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 275 transitions, 568 flow [2023-08-30 10:10:54,826 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:10:54,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 275 transitions, 568 flow [2023-08-30 10:10:54,826 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 275 transitions, 568 flow [2023-08-30 10:10:54,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 275 transitions, 568 flow [2023-08-30 10:10:54,854 INFO L130 PetriNetUnfolder]: 76/473 cut-off events. [2023-08-30 10:10:54,854 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:10:54,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 473 events. 76/473 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2000 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 287. Up to 9 conditions per place. [2023-08-30 10:10:54,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 37260 [2023-08-30 10:10:57,731 INFO L134 LiptonReduction]: Checked pairs total: 113292 [2023-08-30 10:10:57,732 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-08-30 10:10:57,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:10:57,733 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;@1e87803a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:10:57,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-30 10:10:57,734 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 10:10:57,735 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:10:57,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:57,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:10:57,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:10:57,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:57,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1428504782, now seen corresponding path program 1 times [2023-08-30 10:10:57,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:57,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528688510] [2023-08-30 10:10:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:57,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:57,756 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 10:10:57,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:57,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528688510] [2023-08-30 10:10:57,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528688510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:57,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:57,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:10:57,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498230390] [2023-08-30 10:10:57,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:57,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:10:57,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:57,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:10:57,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:10:57,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 476 [2023-08-30 10:10:57,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 133 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:57,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:57,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 476 [2023-08-30 10:10:57,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:00,513 INFO L130 PetriNetUnfolder]: 31960/50784 cut-off events. [2023-08-30 10:11:00,513 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2023-08-30 10:11:00,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99908 conditions, 50784 events. 31960/50784 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 389502 event pairs, 22487 based on Foata normal form. 7310/43414 useless extension candidates. Maximal degree in co-relation 34482. Up to 48929 conditions per place. [2023-08-30 10:11:00,788 INFO L137 encePairwiseOnDemand]: 437/476 looper letters, 106 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-08-30 10:11:00,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 124 transitions, 482 flow [2023-08-30 10:11:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:11:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:11:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-08-30 10:11:00,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805322128851541 [2023-08-30 10:11:00,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-08-30 10:11:00,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-08-30 10:11:00,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:00,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-08-30 10:11:00,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:00,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:00,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:00,795 INFO L175 Difference]: Start difference. First operand has 101 places, 133 transitions, 284 flow. Second operand 3 states and 829 transitions. [2023-08-30 10:11:00,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 124 transitions, 482 flow [2023-08-30 10:11:00,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 124 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:11:00,798 INFO L231 Difference]: Finished difference. Result has 103 places, 99 transitions, 230 flow [2023-08-30 10:11:00,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=103, PETRI_TRANSITIONS=99} [2023-08-30 10:11:00,798 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 2 predicate places. [2023-08-30 10:11:00,798 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 99 transitions, 230 flow [2023-08-30 10:11:00,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:00,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:00,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:11:00,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:11:00,799 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:00,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:00,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1583913829, now seen corresponding path program 1 times [2023-08-30 10:11:00,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:00,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385216415] [2023-08-30 10:11:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:00,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:00,820 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 10:11:00,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:00,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385216415] [2023-08-30 10:11:00,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385216415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:00,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:00,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:11:00,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198257867] [2023-08-30 10:11:00,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:00,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:11:00,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:00,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:11:00,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:11:00,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 476 [2023-08-30 10:11:00,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 99 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:00,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:00,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 476 [2023-08-30 10:11:00,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:03,257 INFO L130 PetriNetUnfolder]: 33459/52959 cut-off events. [2023-08-30 10:11:03,258 INFO L131 PetriNetUnfolder]: For 1601/1601 co-relation queries the response was YES. [2023-08-30 10:11:03,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107237 conditions, 52959 events. 33459/52959 cut-off events. For 1601/1601 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 402820 event pairs, 13468 based on Foata normal form. 0/39052 useless extension candidates. Maximal degree in co-relation 107074. Up to 50158 conditions per place. [2023-08-30 10:11:03,464 INFO L137 encePairwiseOnDemand]: 468/476 looper letters, 115 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2023-08-30 10:11:03,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 132 transitions, 548 flow [2023-08-30 10:11:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:11:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:11:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2023-08-30 10:11:03,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532212885154062 [2023-08-30 10:11:03,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2023-08-30 10:11:03,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2023-08-30 10:11:03,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:03,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2023-08-30 10:11:03,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 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 10:11:03,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:03,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:03,471 INFO L175 Difference]: Start difference. First operand has 103 places, 99 transitions, 230 flow. Second operand 3 states and 790 transitions. [2023-08-30 10:11:03,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 132 transitions, 548 flow [2023-08-30 10:11:03,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 132 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:11:03,474 INFO L231 Difference]: Finished difference. Result has 105 places, 101 transitions, 255 flow [2023-08-30 10:11:03,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=105, PETRI_TRANSITIONS=101} [2023-08-30 10:11:03,475 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 4 predicate places. [2023-08-30 10:11:03,475 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 101 transitions, 255 flow [2023-08-30 10:11:03,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:03,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:03,476 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:11:03,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:11:03,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:03,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:03,476 INFO L85 PathProgramCache]: Analyzing trace with hash -810298601, now seen corresponding path program 1 times [2023-08-30 10:11:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472920954] [2023-08-30 10:11:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:03,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:03,504 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 10:11:03,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:03,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472920954] [2023-08-30 10:11:03,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472920954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:03,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:03,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:11:03,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891382509] [2023-08-30 10:11:03,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:03,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:11:03,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:03,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:11:03,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:11:03,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 476 [2023-08-30 10:11:03,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 101 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:03,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:03,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 476 [2023-08-30 10:11:03,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:05,817 INFO L130 PetriNetUnfolder]: 30400/48373 cut-off events. [2023-08-30 10:11:05,817 INFO L131 PetriNetUnfolder]: For 2901/2901 co-relation queries the response was YES. [2023-08-30 10:11:05,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100257 conditions, 48373 events. 30400/48373 cut-off events. For 2901/2901 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 365914 event pairs, 29648 based on Foata normal form. 0/37366 useless extension candidates. Maximal degree in co-relation 90352. Up to 46779 conditions per place. [2023-08-30 10:11:06,160 INFO L137 encePairwiseOnDemand]: 474/476 looper letters, 81 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2023-08-30 10:11:06,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 415 flow [2023-08-30 10:11:06,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:11:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:11:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 754 transitions. [2023-08-30 10:11:06,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280112044817927 [2023-08-30 10:11:06,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 754 transitions. [2023-08-30 10:11:06,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 754 transitions. [2023-08-30 10:11:06,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:06,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 754 transitions. [2023-08-30 10:11:06,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:06,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:06,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:06,169 INFO L175 Difference]: Start difference. First operand has 105 places, 101 transitions, 255 flow. Second operand 3 states and 754 transitions. [2023-08-30 10:11:06,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 415 flow [2023-08-30 10:11:06,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:11:06,172 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 250 flow [2023-08-30 10:11:06,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2023-08-30 10:11:06,172 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 4 predicate places. [2023-08-30 10:11:06,172 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 250 flow [2023-08-30 10:11:06,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:06,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:06,173 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:11:06,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:11:06,173 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:06,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash -810298600, now seen corresponding path program 1 times [2023-08-30 10:11:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:06,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310363259] [2023-08-30 10:11:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:06,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:06,201 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 10:11:06,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:06,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310363259] [2023-08-30 10:11:06,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310363259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:06,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:06,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:11:06,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98465975] [2023-08-30 10:11:06,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:06,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:11:06,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:11:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:11:06,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 476 [2023-08-30 10:11:06,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:06,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:06,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 476 [2023-08-30 10:11:06,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:08,415 INFO L130 PetriNetUnfolder]: 29111/47090 cut-off events. [2023-08-30 10:11:08,415 INFO L131 PetriNetUnfolder]: For 1833/1833 co-relation queries the response was YES. [2023-08-30 10:11:08,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96162 conditions, 47090 events. 29111/47090 cut-off events. For 1833/1833 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 378863 event pairs, 3624 based on Foata normal form. 0/37367 useless extension candidates. Maximal degree in co-relation 96150. Up to 41465 conditions per place. [2023-08-30 10:11:08,592 INFO L137 encePairwiseOnDemand]: 472/476 looper letters, 128 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2023-08-30 10:11:08,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 150 transitions, 620 flow [2023-08-30 10:11:08,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:11:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:11:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 801 transitions. [2023-08-30 10:11:08,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609243697478992 [2023-08-30 10:11:08,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 801 transitions. [2023-08-30 10:11:08,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 801 transitions. [2023-08-30 10:11:08,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:08,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 801 transitions. [2023-08-30 10:11:08,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:08,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:08,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:08,599 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 250 flow. Second operand 3 states and 801 transitions. [2023-08-30 10:11:08,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 150 transitions, 620 flow [2023-08-30 10:11:08,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 150 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:11:08,603 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 261 flow [2023-08-30 10:11:08,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2023-08-30 10:11:08,603 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 5 predicate places. [2023-08-30 10:11:08,604 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 261 flow [2023-08-30 10:11:08,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:08,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:08,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:11:08,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:11:08,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:08,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1920545257, now seen corresponding path program 1 times [2023-08-30 10:11:08,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:08,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560215887] [2023-08-30 10:11:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:08,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:08,762 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 10:11:08,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:08,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560215887] [2023-08-30 10:11:08,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560215887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:08,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:08,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:11:08,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354154591] [2023-08-30 10:11:08,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:08,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:11:08,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:08,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:11:08,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:11:08,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 476 [2023-08-30 10:11:08,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 220.8) internal successors, (1104), 5 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:08,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:08,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 476 [2023-08-30 10:11:08,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:11,877 INFO L130 PetriNetUnfolder]: 36822/58963 cut-off events. [2023-08-30 10:11:11,877 INFO L131 PetriNetUnfolder]: For 10273/10273 co-relation queries the response was YES. [2023-08-30 10:11:11,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124740 conditions, 58963 events. 36822/58963 cut-off events. For 10273/10273 co-relation queries the response was YES. Maximal size of possible extension queue 1219. Compared 460511 event pairs, 9636 based on Foata normal form. 0/47513 useless extension candidates. Maximal degree in co-relation 124726. Up to 42721 conditions per place. [2023-08-30 10:11:12,081 INFO L137 encePairwiseOnDemand]: 461/476 looper letters, 304 selfloop transitions, 19 changer transitions 0/337 dead transitions. [2023-08-30 10:11:12,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 337 transitions, 1507 flow [2023-08-30 10:11:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:11:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:11:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1856 transitions. [2023-08-30 10:11:12,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570228091236494 [2023-08-30 10:11:12,085 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1856 transitions. [2023-08-30 10:11:12,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1856 transitions. [2023-08-30 10:11:12,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:12,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1856 transitions. [2023-08-30 10:11:12,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:12,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:12,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:12,101 INFO L175 Difference]: Start difference. First operand has 106 places, 100 transitions, 261 flow. Second operand 7 states and 1856 transitions. [2023-08-30 10:11:12,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 337 transitions, 1507 flow [2023-08-30 10:11:12,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 337 transitions, 1489 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:11:12,108 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 416 flow [2023-08-30 10:11:12,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=416, PETRI_PLACES=116, PETRI_TRANSITIONS=116} [2023-08-30 10:11:12,109 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 15 predicate places. [2023-08-30 10:11:12,109 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 416 flow [2023-08-30 10:11:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.8) internal successors, (1104), 5 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:12,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:12,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:11:12,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:11:12,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:12,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:12,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1920545256, now seen corresponding path program 1 times [2023-08-30 10:11:12,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:12,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072844007] [2023-08-30 10:11:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:12,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:12,152 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 10:11:12,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:12,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072844007] [2023-08-30 10:11:12,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072844007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:12,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:12,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:11:12,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643127571] [2023-08-30 10:11:12,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:12,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:11:12,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:12,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:11:12,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:11:12,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 476 [2023-08-30 10:11:12,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 116 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 220.8) internal successors, (1104), 5 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:12,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:12,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 476 [2023-08-30 10:11:12,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:15,759 INFO L130 PetriNetUnfolder]: 36597/59324 cut-off events. [2023-08-30 10:11:15,759 INFO L131 PetriNetUnfolder]: For 31728/31728 co-relation queries the response was YES. [2023-08-30 10:11:15,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140812 conditions, 59324 events. 36597/59324 cut-off events. For 31728/31728 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 473547 event pairs, 9511 based on Foata normal form. 817/52173 useless extension candidates. Maximal degree in co-relation 140792. Up to 44141 conditions per place. [2023-08-30 10:11:16,024 INFO L137 encePairwiseOnDemand]: 461/476 looper letters, 307 selfloop transitions, 24 changer transitions 0/345 dead transitions. [2023-08-30 10:11:16,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 345 transitions, 1690 flow [2023-08-30 10:11:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:11:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:11:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1853 transitions. [2023-08-30 10:11:16,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561224489795918 [2023-08-30 10:11:16,028 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1853 transitions. [2023-08-30 10:11:16,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1853 transitions. [2023-08-30 10:11:16,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:16,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1853 transitions. [2023-08-30 10:11:16,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.7142857142857) internal successors, (1853), 7 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:16,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:16,035 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:16,035 INFO L175 Difference]: Start difference. First operand has 116 places, 116 transitions, 416 flow. Second operand 7 states and 1853 transitions. [2023-08-30 10:11:16,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 345 transitions, 1690 flow [2023-08-30 10:11:16,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 345 transitions, 1686 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:11:16,073 INFO L231 Difference]: Finished difference. Result has 125 places, 128 transitions, 606 flow [2023-08-30 10:11:16,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=606, PETRI_PLACES=125, PETRI_TRANSITIONS=128} [2023-08-30 10:11:16,073 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 24 predicate places. [2023-08-30 10:11:16,073 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 128 transitions, 606 flow [2023-08-30 10:11:16,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.8) internal successors, (1104), 5 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:16,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:16,074 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:11:16,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:11:16,074 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:16,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:16,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1519525379, now seen corresponding path program 1 times [2023-08-30 10:11:16,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:16,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426174655] [2023-08-30 10:11:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:16,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:16,114 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 10:11:16,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:16,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426174655] [2023-08-30 10:11:16,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426174655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:16,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:16,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:11:16,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49119748] [2023-08-30 10:11:16,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:16,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:11:16,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:11:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:11:16,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 476 [2023-08-30 10:11:16,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 128 transitions, 606 flow. Second operand has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:16,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:16,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 476 [2023-08-30 10:11:16,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:20,437 INFO L130 PetriNetUnfolder]: 40065/64391 cut-off events. [2023-08-30 10:11:20,437 INFO L131 PetriNetUnfolder]: For 77845/77845 co-relation queries the response was YES. [2023-08-30 10:11:20,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166176 conditions, 64391 events. 40065/64391 cut-off events. For 77845/77845 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 511852 event pairs, 11492 based on Foata normal form. 644/56561 useless extension candidates. Maximal degree in co-relation 166151. Up to 49157 conditions per place. [2023-08-30 10:11:20,763 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 311 selfloop transitions, 28 changer transitions 0/353 dead transitions. [2023-08-30 10:11:20,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 353 transitions, 1971 flow [2023-08-30 10:11:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:11:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:11:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1842 transitions. [2023-08-30 10:11:20,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528211284513805 [2023-08-30 10:11:20,766 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1842 transitions. [2023-08-30 10:11:20,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1842 transitions. [2023-08-30 10:11:20,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:20,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1842 transitions. [2023-08-30 10:11:20,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:20,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:20,772 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:20,772 INFO L175 Difference]: Start difference. First operand has 125 places, 128 transitions, 606 flow. Second operand 7 states and 1842 transitions. [2023-08-30 10:11:20,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 353 transitions, 1971 flow [2023-08-30 10:11:20,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 353 transitions, 1962 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:11:20,949 INFO L231 Difference]: Finished difference. Result has 134 places, 144 transitions, 880 flow [2023-08-30 10:11:20,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=880, PETRI_PLACES=134, PETRI_TRANSITIONS=144} [2023-08-30 10:11:20,950 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 33 predicate places. [2023-08-30 10:11:20,950 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 144 transitions, 880 flow [2023-08-30 10:11:20,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:20,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:20,951 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:11:20,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 10:11:20,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:20,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:20,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1519525380, now seen corresponding path program 1 times [2023-08-30 10:11:20,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:20,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926908316] [2023-08-30 10:11:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:20,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:20,999 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 10:11:20,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:20,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926908316] [2023-08-30 10:11:21,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926908316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:21,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:21,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:11:21,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517752349] [2023-08-30 10:11:21,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:21,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:11:21,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:21,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:11:21,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:11:21,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 476 [2023-08-30 10:11:21,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 144 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:21,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:21,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 476 [2023-08-30 10:11:21,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:25,421 INFO L130 PetriNetUnfolder]: 38673/62160 cut-off events. [2023-08-30 10:11:25,421 INFO L131 PetriNetUnfolder]: For 123062/123062 co-relation queries the response was YES. [2023-08-30 10:11:25,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172163 conditions, 62160 events. 38673/62160 cut-off events. For 123062/123062 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 491622 event pairs, 11468 based on Foata normal form. 644/54487 useless extension candidates. Maximal degree in co-relation 172132. Up to 48051 conditions per place. [2023-08-30 10:11:25,724 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 304 selfloop transitions, 28 changer transitions 0/346 dead transitions. [2023-08-30 10:11:25,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 346 transitions, 2020 flow [2023-08-30 10:11:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:11:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:11:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1839 transitions. [2023-08-30 10:11:25,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551920768307323 [2023-08-30 10:11:25,728 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1839 transitions. [2023-08-30 10:11:25,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1839 transitions. [2023-08-30 10:11:25,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:25,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1839 transitions. [2023-08-30 10:11:25,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 262.7142857142857) internal successors, (1839), 7 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:25,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:25,734 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:25,734 INFO L175 Difference]: Start difference. First operand has 134 places, 144 transitions, 880 flow. Second operand 7 states and 1839 transitions. [2023-08-30 10:11:25,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 346 transitions, 2020 flow [2023-08-30 10:11:26,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 346 transitions, 1989 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 10:11:26,048 INFO L231 Difference]: Finished difference. Result has 138 places, 140 transitions, 845 flow [2023-08-30 10:11:26,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=845, PETRI_PLACES=138, PETRI_TRANSITIONS=140} [2023-08-30 10:11:26,048 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 37 predicate places. [2023-08-30 10:11:26,048 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 140 transitions, 845 flow [2023-08-30 10:11:26,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:26,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:26,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:11:26,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 10:11:26,049 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:26,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:26,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1227137045, now seen corresponding path program 1 times [2023-08-30 10:11:26,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:26,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877173190] [2023-08-30 10:11:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:26,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:26,076 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 10:11:26,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:26,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877173190] [2023-08-30 10:11:26,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877173190] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:26,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:26,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:11:26,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936258438] [2023-08-30 10:11:26,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:26,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:11:26,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:11:26,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:11:26,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 476 [2023-08-30 10:11:26,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 140 transitions, 845 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:26,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:26,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 476 [2023-08-30 10:11:26,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:29,751 INFO L130 PetriNetUnfolder]: 33636/53669 cut-off events. [2023-08-30 10:11:29,751 INFO L131 PetriNetUnfolder]: For 110583/114510 co-relation queries the response was YES. [2023-08-30 10:11:29,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147442 conditions, 53669 events. 33636/53669 cut-off events. For 110583/114510 co-relation queries the response was YES. Maximal size of possible extension queue 1161. Compared 409854 event pairs, 12171 based on Foata normal form. 2913/50633 useless extension candidates. Maximal degree in co-relation 147411. Up to 33663 conditions per place. [2023-08-30 10:11:30,031 INFO L137 encePairwiseOnDemand]: 469/476 looper letters, 169 selfloop transitions, 3 changer transitions 0/201 dead transitions. [2023-08-30 10:11:30,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 201 transitions, 1491 flow [2023-08-30 10:11:30,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:11:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:11:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 808 transitions. [2023-08-30 10:11:30,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658263305322129 [2023-08-30 10:11:30,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 808 transitions. [2023-08-30 10:11:30,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 808 transitions. [2023-08-30 10:11:30,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:30,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 808 transitions. [2023-08-30 10:11:30,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:30,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:30,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:30,036 INFO L175 Difference]: Start difference. First operand has 138 places, 140 transitions, 845 flow. Second operand 3 states and 808 transitions. [2023-08-30 10:11:30,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 201 transitions, 1491 flow [2023-08-30 10:11:30,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 201 transitions, 1482 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 10:11:30,147 INFO L231 Difference]: Finished difference. Result has 139 places, 142 transitions, 861 flow [2023-08-30 10:11:30,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=861, PETRI_PLACES=139, PETRI_TRANSITIONS=142} [2023-08-30 10:11:30,148 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 38 predicate places. [2023-08-30 10:11:30,148 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 142 transitions, 861 flow [2023-08-30 10:11:30,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:30,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:30,148 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 10:11:30,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:11:30,148 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:30,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:30,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1930935541, now seen corresponding path program 1 times [2023-08-30 10:11:30,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:30,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072147882] [2023-08-30 10:11:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:30,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:30,201 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 10:11:30,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:30,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072147882] [2023-08-30 10:11:30,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072147882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:30,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:30,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:11:30,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505617858] [2023-08-30 10:11:30,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:30,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:11:30,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:30,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:11:30,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:11:30,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 476 [2023-08-30 10:11:30,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 142 transitions, 861 flow. Second operand has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:30,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:30,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 476 [2023-08-30 10:11:30,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:35,986 INFO L130 PetriNetUnfolder]: 47548/77327 cut-off events. [2023-08-30 10:11:35,986 INFO L131 PetriNetUnfolder]: For 128391/128475 co-relation queries the response was YES. [2023-08-30 10:11:36,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209597 conditions, 77327 events. 47548/77327 cut-off events. For 128391/128475 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 634475 event pairs, 7605 based on Foata normal form. 668/69709 useless extension candidates. Maximal degree in co-relation 209564. Up to 36109 conditions per place. [2023-08-30 10:11:36,342 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 510 selfloop transitions, 42 changer transitions 0/566 dead transitions. [2023-08-30 10:11:36,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 566 transitions, 3215 flow [2023-08-30 10:11:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:11:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:11:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3092 transitions. [2023-08-30 10:11:36,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413165266106442 [2023-08-30 10:11:36,347 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3092 transitions. [2023-08-30 10:11:36,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3092 transitions. [2023-08-30 10:11:36,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:36,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3092 transitions. [2023-08-30 10:11:36,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 257.6666666666667) internal successors, (3092), 12 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:36,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:36,356 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:36,356 INFO L175 Difference]: Start difference. First operand has 139 places, 142 transitions, 861 flow. Second operand 12 states and 3092 transitions. [2023-08-30 10:11:36,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 566 transitions, 3215 flow [2023-08-30 10:11:36,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 566 transitions, 3204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:11:36,676 INFO L231 Difference]: Finished difference. Result has 150 places, 154 transitions, 1097 flow [2023-08-30 10:11:36,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1097, PETRI_PLACES=150, PETRI_TRANSITIONS=154} [2023-08-30 10:11:36,677 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 49 predicate places. [2023-08-30 10:11:36,677 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 154 transitions, 1097 flow [2023-08-30 10:11:36,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:36,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:36,677 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 10:11:36,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 10:11:36,678 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:36,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:36,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1999381894, now seen corresponding path program 1 times [2023-08-30 10:11:36,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:36,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419456397] [2023-08-30 10:11:36,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:36,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:36,726 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 10:11:36,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419456397] [2023-08-30 10:11:36,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419456397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:36,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:36,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:11:36,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339252355] [2023-08-30 10:11:36,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:36,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:11:36,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:11:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:11:36,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 476 [2023-08-30 10:11:36,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 154 transitions, 1097 flow. Second operand has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:36,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:36,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 476 [2023-08-30 10:11:36,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:42,746 INFO L130 PetriNetUnfolder]: 47573/78353 cut-off events. [2023-08-30 10:11:42,747 INFO L131 PetriNetUnfolder]: For 155655/155739 co-relation queries the response was YES. [2023-08-30 10:11:42,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216960 conditions, 78353 events. 47573/78353 cut-off events. For 155655/155739 co-relation queries the response was YES. Maximal size of possible extension queue 1502. Compared 655857 event pairs, 4562 based on Foata normal form. 694/70643 useless extension candidates. Maximal degree in co-relation 216924. Up to 36748 conditions per place. [2023-08-30 10:11:43,154 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 466 selfloop transitions, 47 changer transitions 0/527 dead transitions. [2023-08-30 10:11:43,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 527 transitions, 3211 flow [2023-08-30 10:11:43,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:11:43,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:11:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2611 transitions. [2023-08-30 10:11:43,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485294117647059 [2023-08-30 10:11:43,158 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2611 transitions. [2023-08-30 10:11:43,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2611 transitions. [2023-08-30 10:11:43,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:43,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2611 transitions. [2023-08-30 10:11:43,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 261.1) internal successors, (2611), 10 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:43,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:43,166 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:43,166 INFO L175 Difference]: Start difference. First operand has 150 places, 154 transitions, 1097 flow. Second operand 10 states and 2611 transitions. [2023-08-30 10:11:43,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 527 transitions, 3211 flow [2023-08-30 10:11:44,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 527 transitions, 3171 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 10:11:44,482 INFO L231 Difference]: Finished difference. Result has 157 places, 160 transitions, 1256 flow [2023-08-30 10:11:44,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1256, PETRI_PLACES=157, PETRI_TRANSITIONS=160} [2023-08-30 10:11:44,483 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 56 predicate places. [2023-08-30 10:11:44,483 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 160 transitions, 1256 flow [2023-08-30 10:11:44,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:44,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:44,483 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 10:11:44,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 10:11:44,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:44,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:44,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2027983034, now seen corresponding path program 1 times [2023-08-30 10:11:44,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:44,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435715534] [2023-08-30 10:11:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:44,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:44,528 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 10:11:44,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:44,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435715534] [2023-08-30 10:11:44,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435715534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:44,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:44,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:11:44,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809846994] [2023-08-30 10:11:44,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:44,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:11:44,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:11:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:11:44,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 476 [2023-08-30 10:11:44,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 160 transitions, 1256 flow. Second operand has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:44,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:44,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 476 [2023-08-30 10:11:44,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:51,276 INFO L130 PetriNetUnfolder]: 50526/82655 cut-off events. [2023-08-30 10:11:51,276 INFO L131 PetriNetUnfolder]: For 216323/216323 co-relation queries the response was YES. [2023-08-30 10:11:51,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241474 conditions, 82655 events. 50526/82655 cut-off events. For 216323/216323 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 690186 event pairs, 14298 based on Foata normal form. 446/74291 useless extension candidates. Maximal degree in co-relation 241434. Up to 62885 conditions per place. [2023-08-30 10:11:51,769 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 527 selfloop transitions, 47 changer transitions 0/588 dead transitions. [2023-08-30 10:11:51,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 588 transitions, 3669 flow [2023-08-30 10:11:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:11:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:11:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3536 transitions. [2023-08-30 10:11:51,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2023-08-30 10:11:51,774 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3536 transitions. [2023-08-30 10:11:51,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3536 transitions. [2023-08-30 10:11:51,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:51,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3536 transitions. [2023-08-30 10:11:51,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 252.57142857142858) internal successors, (3536), 14 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:51,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:51,790 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:51,790 INFO L175 Difference]: Start difference. First operand has 157 places, 160 transitions, 1256 flow. Second operand 14 states and 3536 transitions. [2023-08-30 10:11:51,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 588 transitions, 3669 flow [2023-08-30 10:11:53,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 588 transitions, 3605 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-30 10:11:53,536 INFO L231 Difference]: Finished difference. Result has 168 places, 175 transitions, 1528 flow [2023-08-30 10:11:53,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1528, PETRI_PLACES=168, PETRI_TRANSITIONS=175} [2023-08-30 10:11:53,536 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 67 predicate places. [2023-08-30 10:11:53,536 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 175 transitions, 1528 flow [2023-08-30 10:11:53,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:53,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:53,537 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 10:11:53,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 10:11:53,537 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:11:53,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:53,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1992146415, now seen corresponding path program 1 times [2023-08-30 10:11:53,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:53,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427013822] [2023-08-30 10:11:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:53,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:53,583 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 10:11:53,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:53,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427013822] [2023-08-30 10:11:53,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427013822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:53,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:53,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:11:53,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864958669] [2023-08-30 10:11:53,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:53,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:11:53,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:53,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:11:53,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:11:53,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 476 [2023-08-30 10:11:53,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 175 transitions, 1528 flow. Second operand has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:53,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:53,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 476 [2023-08-30 10:11:53,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:00,472 INFO L130 PetriNetUnfolder]: 49751/81370 cut-off events. [2023-08-30 10:12:00,472 INFO L131 PetriNetUnfolder]: For 266947/267031 co-relation queries the response was YES. [2023-08-30 10:12:00,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243142 conditions, 81370 events. 49751/81370 cut-off events. For 266947/267031 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 677446 event pairs, 12686 based on Foata normal form. 530/73221 useless extension candidates. Maximal degree in co-relation 243098. Up to 56553 conditions per place. [2023-08-30 10:12:01,129 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 553 selfloop transitions, 69 changer transitions 0/636 dead transitions. [2023-08-30 10:12:01,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 636 transitions, 3961 flow [2023-08-30 10:12:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:12:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:12:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4017 transitions. [2023-08-30 10:12:01,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274422268907563 [2023-08-30 10:12:01,132 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4017 transitions. [2023-08-30 10:12:01,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4017 transitions. [2023-08-30 10:12:01,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:01,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4017 transitions. [2023-08-30 10:12:01,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 251.0625) internal successors, (4017), 16 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:01,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 476.0) internal successors, (8092), 17 states have internal predecessors, (8092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:01,141 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 476.0) internal successors, (8092), 17 states have internal predecessors, (8092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:01,141 INFO L175 Difference]: Start difference. First operand has 168 places, 175 transitions, 1528 flow. Second operand 16 states and 4017 transitions. [2023-08-30 10:12:01,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 636 transitions, 3961 flow [2023-08-30 10:12:02,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 636 transitions, 3820 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-08-30 10:12:02,735 INFO L231 Difference]: Finished difference. Result has 175 places, 179 transitions, 1532 flow [2023-08-30 10:12:02,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1532, PETRI_PLACES=175, PETRI_TRANSITIONS=179} [2023-08-30 10:12:02,735 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 74 predicate places. [2023-08-30 10:12:02,736 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 179 transitions, 1532 flow [2023-08-30 10:12:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:02,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:02,736 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 10:12:02,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 10:12:02,736 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:12:02,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:02,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1971255448, now seen corresponding path program 2 times [2023-08-30 10:12:02,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:02,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179132689] [2023-08-30 10:12:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:02,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:02,780 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 10:12:02,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:02,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179132689] [2023-08-30 10:12:02,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179132689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:02,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:02,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:12:02,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030402673] [2023-08-30 10:12:02,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:02,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:12:02,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:12:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:12:02,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 476 [2023-08-30 10:12:02,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 179 transitions, 1532 flow. Second operand has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:02,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:02,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 476 [2023-08-30 10:12:02,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:09,915 INFO L130 PetriNetUnfolder]: 52141/84443 cut-off events. [2023-08-30 10:12:09,915 INFO L131 PetriNetUnfolder]: For 290446/290530 co-relation queries the response was YES. [2023-08-30 10:12:10,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257108 conditions, 84443 events. 52141/84443 cut-off events. For 290446/290530 co-relation queries the response was YES. Maximal size of possible extension queue 1628. Compared 695330 event pairs, 15896 based on Foata normal form. 510/76058 useless extension candidates. Maximal degree in co-relation 257065. Up to 65067 conditions per place. [2023-08-30 10:12:10,405 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 525 selfloop transitions, 48 changer transitions 0/587 dead transitions. [2023-08-30 10:12:10,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 587 transitions, 3784 flow [2023-08-30 10:12:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:12:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:12:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3529 transitions. [2023-08-30 10:12:10,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529561824729892 [2023-08-30 10:12:10,408 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3529 transitions. [2023-08-30 10:12:10,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3529 transitions. [2023-08-30 10:12:10,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:10,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3529 transitions. [2023-08-30 10:12:10,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 252.07142857142858) internal successors, (3529), 14 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:10,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:10,415 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:10,415 INFO L175 Difference]: Start difference. First operand has 175 places, 179 transitions, 1532 flow. Second operand 14 states and 3529 transitions. [2023-08-30 10:12:10,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 587 transitions, 3784 flow [2023-08-30 10:12:12,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 587 transitions, 3624 flow, removed 31 selfloop flow, removed 10 redundant places. [2023-08-30 10:12:12,245 INFO L231 Difference]: Finished difference. Result has 182 places, 187 transitions, 1609 flow [2023-08-30 10:12:12,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1609, PETRI_PLACES=182, PETRI_TRANSITIONS=187} [2023-08-30 10:12:12,246 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 81 predicate places. [2023-08-30 10:12:12,246 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 187 transitions, 1609 flow [2023-08-30 10:12:12,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:12,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:12,246 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 10:12:12,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:12:12,247 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:12:12,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1971255449, now seen corresponding path program 2 times [2023-08-30 10:12:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827693424] [2023-08-30 10:12:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:12,314 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 10:12:12,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:12,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827693424] [2023-08-30 10:12:12,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827693424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:12,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:12,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:12:12,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963021644] [2023-08-30 10:12:12,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:12,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:12:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:12,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:12:12,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:12:12,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 476 [2023-08-30 10:12:12,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 187 transitions, 1609 flow. Second operand has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:12,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:12,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 476 [2023-08-30 10:12:12,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:19,201 INFO L130 PetriNetUnfolder]: 50640/81845 cut-off events. [2023-08-30 10:12:19,201 INFO L131 PetriNetUnfolder]: For 275586/275628 co-relation queries the response was YES. [2023-08-30 10:12:19,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248801 conditions, 81845 events. 50640/81845 cut-off events. For 275586/275628 co-relation queries the response was YES. Maximal size of possible extension queue 1554. Compared 670876 event pairs, 14202 based on Foata normal form. 510/73728 useless extension candidates. Maximal degree in co-relation 248758. Up to 57554 conditions per place. [2023-08-30 10:12:19,700 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 573 selfloop transitions, 64 changer transitions 0/651 dead transitions. [2023-08-30 10:12:19,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 651 transitions, 3927 flow [2023-08-30 10:12:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:12:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:12:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4032 transitions. [2023-08-30 10:12:19,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-08-30 10:12:19,703 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4032 transitions. [2023-08-30 10:12:19,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4032 transitions. [2023-08-30 10:12:19,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:19,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4032 transitions. [2023-08-30 10:12:19,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:19,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 476.0) internal successors, (8092), 17 states have internal predecessors, (8092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:19,711 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 476.0) internal successors, (8092), 17 states have internal predecessors, (8092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:19,711 INFO L175 Difference]: Start difference. First operand has 182 places, 187 transitions, 1609 flow. Second operand 16 states and 4032 transitions. [2023-08-30 10:12:19,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 651 transitions, 3927 flow [2023-08-30 10:12:22,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 651 transitions, 3705 flow, removed 33 selfloop flow, removed 13 redundant places. [2023-08-30 10:12:22,411 INFO L231 Difference]: Finished difference. Result has 184 places, 177 transitions, 1359 flow [2023-08-30 10:12:22,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1359, PETRI_PLACES=184, PETRI_TRANSITIONS=177} [2023-08-30 10:12:22,411 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 83 predicate places. [2023-08-30 10:12:22,412 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 177 transitions, 1359 flow [2023-08-30 10:12:22,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:22,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:22,412 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 10:12:22,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 10:12:22,412 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:12:22,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:22,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1928490227, now seen corresponding path program 1 times [2023-08-30 10:12:22,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:22,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582352760] [2023-08-30 10:12:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:22,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:22,467 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 10:12:22,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:22,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582352760] [2023-08-30 10:12:22,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582352760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:22,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:22,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:12:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737374125] [2023-08-30 10:12:22,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:22,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:12:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:12:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:12:22,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 476 [2023-08-30 10:12:22,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 177 transitions, 1359 flow. Second operand has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:22,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:22,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 476 [2023-08-30 10:12:22,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:31,293 INFO L130 PetriNetUnfolder]: 64874/104437 cut-off events. [2023-08-30 10:12:31,293 INFO L131 PetriNetUnfolder]: For 289183/289183 co-relation queries the response was YES. [2023-08-30 10:12:31,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302463 conditions, 104437 events. 64874/104437 cut-off events. For 289183/289183 co-relation queries the response was YES. Maximal size of possible extension queue 2011. Compared 874834 event pairs, 16225 based on Foata normal form. 702/93587 useless extension candidates. Maximal degree in co-relation 302422. Up to 62218 conditions per place. [2023-08-30 10:12:31,960 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 473 selfloop transitions, 59 changer transitions 0/546 dead transitions. [2023-08-30 10:12:31,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 546 transitions, 3697 flow [2023-08-30 10:12:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:12:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:12:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2593 transitions. [2023-08-30 10:12:31,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5447478991596638 [2023-08-30 10:12:31,962 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2593 transitions. [2023-08-30 10:12:31,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2593 transitions. [2023-08-30 10:12:31,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:31,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2593 transitions. [2023-08-30 10:12:31,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 259.3) internal successors, (2593), 10 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:31,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:31,967 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:31,967 INFO L175 Difference]: Start difference. First operand has 184 places, 177 transitions, 1359 flow. Second operand 10 states and 2593 transitions. [2023-08-30 10:12:31,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 546 transitions, 3697 flow [2023-08-30 10:12:34,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 546 transitions, 3615 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-30 10:12:34,034 INFO L231 Difference]: Finished difference. Result has 188 places, 200 transitions, 1773 flow [2023-08-30 10:12:34,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1773, PETRI_PLACES=188, PETRI_TRANSITIONS=200} [2023-08-30 10:12:34,034 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 87 predicate places. [2023-08-30 10:12:34,034 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 200 transitions, 1773 flow [2023-08-30 10:12:34,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:34,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:34,035 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 10:12:34,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 10:12:34,035 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:12:34,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:34,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1928490163, now seen corresponding path program 1 times [2023-08-30 10:12:34,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:34,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224448233] [2023-08-30 10:12:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:34,083 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 10:12:34,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:34,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224448233] [2023-08-30 10:12:34,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224448233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:34,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:34,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:12:34,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342094032] [2023-08-30 10:12:34,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:34,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:12:34,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:12:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:12:34,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 476 [2023-08-30 10:12:34,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 200 transitions, 1773 flow. Second operand has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:34,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:34,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 476 [2023-08-30 10:12:34,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:42,896 INFO L130 PetriNetUnfolder]: 63864/103096 cut-off events. [2023-08-30 10:12:42,896 INFO L131 PetriNetUnfolder]: For 316185/316185 co-relation queries the response was YES. [2023-08-30 10:12:43,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309239 conditions, 103096 events. 63864/103096 cut-off events. For 316185/316185 co-relation queries the response was YES. Maximal size of possible extension queue 1997. Compared 865350 event pairs, 16699 based on Foata normal form. 702/92323 useless extension candidates. Maximal degree in co-relation 309194. Up to 62218 conditions per place. [2023-08-30 10:12:43,651 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 487 selfloop transitions, 56 changer transitions 0/557 dead transitions. [2023-08-30 10:12:43,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 557 transitions, 3791 flow [2023-08-30 10:12:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:12:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:12:43,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2821 transitions. [2023-08-30 10:12:43,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387700534759359 [2023-08-30 10:12:43,653 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2821 transitions. [2023-08-30 10:12:43,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2821 transitions. [2023-08-30 10:12:43,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:43,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2821 transitions. [2023-08-30 10:12:43,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 256.45454545454544) internal successors, (2821), 11 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:43,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:43,659 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:43,659 INFO L175 Difference]: Start difference. First operand has 188 places, 200 transitions, 1773 flow. Second operand 11 states and 2821 transitions. [2023-08-30 10:12:43,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 557 transitions, 3791 flow [2023-08-30 10:12:46,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 557 transitions, 3685 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-08-30 10:12:46,007 INFO L231 Difference]: Finished difference. Result has 191 places, 196 transitions, 1706 flow [2023-08-30 10:12:46,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=191, PETRI_TRANSITIONS=196} [2023-08-30 10:12:46,007 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 90 predicate places. [2023-08-30 10:12:46,007 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 196 transitions, 1706 flow [2023-08-30 10:12:46,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.14285714285714) internal successors, (1520), 7 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:46,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:46,008 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] [2023-08-30 10:12:46,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 10:12:46,008 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:12:46,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:46,008 INFO L85 PathProgramCache]: Analyzing trace with hash -498395834, now seen corresponding path program 1 times [2023-08-30 10:12:46,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:46,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628458021] [2023-08-30 10:12:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:46,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:46,050 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 10:12:46,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:46,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628458021] [2023-08-30 10:12:46,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628458021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:46,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:46,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:12:46,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780821752] [2023-08-30 10:12:46,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:46,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:12:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:46,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:12:46,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:12:46,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 476 [2023-08-30 10:12:46,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 196 transitions, 1706 flow. Second operand has 5 states, 5 states have (on average 222.4) internal successors, (1112), 5 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:46,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:46,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 476 [2023-08-30 10:12:46,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:54,787 INFO L130 PetriNetUnfolder]: 68328/108653 cut-off events. [2023-08-30 10:12:54,787 INFO L131 PetriNetUnfolder]: For 259196/261649 co-relation queries the response was YES. [2023-08-30 10:12:55,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310701 conditions, 108653 events. 68328/108653 cut-off events. For 259196/261649 co-relation queries the response was YES. Maximal size of possible extension queue 2128. Compared 895568 event pairs, 15528 based on Foata normal form. 1810/98981 useless extension candidates. Maximal degree in co-relation 310656. Up to 48190 conditions per place. [2023-08-30 10:12:55,709 INFO L137 encePairwiseOnDemand]: 461/476 looper letters, 465 selfloop transitions, 19 changer transitions 0/525 dead transitions. [2023-08-30 10:12:55,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 525 transitions, 4622 flow [2023-08-30 10:12:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:12:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:12:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1861 transitions. [2023-08-30 10:12:55,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585234093637454 [2023-08-30 10:12:55,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1861 transitions. [2023-08-30 10:12:55,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1861 transitions. [2023-08-30 10:12:55,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:55,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1861 transitions. [2023-08-30 10:12:55,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 265.85714285714283) internal successors, (1861), 7 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:55,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:55,715 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:55,715 INFO L175 Difference]: Start difference. First operand has 191 places, 196 transitions, 1706 flow. Second operand 7 states and 1861 transitions. [2023-08-30 10:12:55,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 525 transitions, 4622 flow [2023-08-30 10:12:56,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 525 transitions, 4477 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-30 10:12:56,510 INFO L231 Difference]: Finished difference. Result has 195 places, 212 transitions, 1778 flow [2023-08-30 10:12:56,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1778, PETRI_PLACES=195, PETRI_TRANSITIONS=212} [2023-08-30 10:12:56,510 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 94 predicate places. [2023-08-30 10:12:56,510 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 212 transitions, 1778 flow [2023-08-30 10:12:56,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.4) internal successors, (1112), 5 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:56,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:56,510 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] [2023-08-30 10:12:56,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 10:12:56,511 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:12:56,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:56,511 INFO L85 PathProgramCache]: Analyzing trace with hash -498395894, now seen corresponding path program 1 times [2023-08-30 10:12:56,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:56,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479704506] [2023-08-30 10:12:56,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:56,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:56,564 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 10:12:56,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479704506] [2023-08-30 10:12:56,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479704506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:56,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:56,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:12:56,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498962224] [2023-08-30 10:12:56,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:56,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:12:56,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:56,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:12:56,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:12:56,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 476 [2023-08-30 10:12:56,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 212 transitions, 1778 flow. Second operand has 5 states, 5 states have (on average 222.4) internal successors, (1112), 5 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:56,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:56,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 476 [2023-08-30 10:12:56,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:13:05,869 INFO L130 PetriNetUnfolder]: 65280/104795 cut-off events. [2023-08-30 10:13:05,869 INFO L131 PetriNetUnfolder]: For 260908/263362 co-relation queries the response was YES. [2023-08-30 10:13:06,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330870 conditions, 104795 events. 65280/104795 cut-off events. For 260908/263362 co-relation queries the response was YES. Maximal size of possible extension queue 2044. Compared 870488 event pairs, 15120 based on Foata normal form. 4229/105018 useless extension candidates. Maximal degree in co-relation 330820. Up to 48760 conditions per place. [2023-08-30 10:13:06,819 INFO L137 encePairwiseOnDemand]: 461/476 looper letters, 468 selfloop transitions, 24 changer transitions 0/533 dead transitions. [2023-08-30 10:13:06,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 533 transitions, 4678 flow [2023-08-30 10:13:06,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:13:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:13:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1858 transitions. [2023-08-30 10:13:06,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576230492196879 [2023-08-30 10:13:06,821 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1858 transitions. [2023-08-30 10:13:06,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1858 transitions. [2023-08-30 10:13:06,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:13:06,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1858 transitions. [2023-08-30 10:13:06,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 265.42857142857144) internal successors, (1858), 7 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:06,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:06,825 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:06,825 INFO L175 Difference]: Start difference. First operand has 195 places, 212 transitions, 1778 flow. Second operand 7 states and 1858 transitions. [2023-08-30 10:13:06,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 533 transitions, 4678 flow [2023-08-30 10:13:08,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 533 transitions, 4670 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 10:13:08,514 INFO L231 Difference]: Finished difference. Result has 204 places, 224 transitions, 1964 flow [2023-08-30 10:13:08,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1964, PETRI_PLACES=204, PETRI_TRANSITIONS=224} [2023-08-30 10:13:08,515 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 103 predicate places. [2023-08-30 10:13:08,515 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 224 transitions, 1964 flow [2023-08-30 10:13:08,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.4) internal successors, (1112), 5 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:08,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:13:08,516 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] [2023-08-30 10:13:08,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 10:13:08,516 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:13:08,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:13:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1948223399, now seen corresponding path program 1 times [2023-08-30 10:13:08,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:13:08,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069722307] [2023-08-30 10:13:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:13:08,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:13:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:13:08,575 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 10:13:08,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:13:08,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069722307] [2023-08-30 10:13:08,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069722307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:13:08,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:13:08,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:13:08,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336366894] [2023-08-30 10:13:08,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:13:08,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:13:08,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:13:08,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:13:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:13:08,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 476 [2023-08-30 10:13:08,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 224 transitions, 1964 flow. Second operand has 8 states, 8 states have (on average 213.25) internal successors, (1706), 8 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:08,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:13:08,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 476 [2023-08-30 10:13:08,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:13:22,194 INFO L130 PetriNetUnfolder]: 82903/136087 cut-off events. [2023-08-30 10:13:22,195 INFO L131 PetriNetUnfolder]: For 449471/449471 co-relation queries the response was YES. [2023-08-30 10:13:22,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457888 conditions, 136087 events. 82903/136087 cut-off events. For 449471/449471 co-relation queries the response was YES. Maximal size of possible extension queue 2578. Compared 1201472 event pairs, 10118 based on Foata normal form. 496/131763 useless extension candidates. Maximal degree in co-relation 457833. Up to 58233 conditions per place. [2023-08-30 10:13:23,608 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 732 selfloop transitions, 99 changer transitions 0/848 dead transitions. [2023-08-30 10:13:23,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 848 transitions, 6113 flow [2023-08-30 10:13:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:13:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:13:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4246 transitions. [2023-08-30 10:13:23,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247157686604054 [2023-08-30 10:13:23,611 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4246 transitions. [2023-08-30 10:13:23,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4246 transitions. [2023-08-30 10:13:23,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:13:23,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4246 transitions. [2023-08-30 10:13:23,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 249.76470588235293) internal successors, (4246), 17 states have internal predecessors, (4246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:23,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 476.0) internal successors, (8568), 18 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:23,619 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 476.0) internal successors, (8568), 18 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:23,619 INFO L175 Difference]: Start difference. First operand has 204 places, 224 transitions, 1964 flow. Second operand 17 states and 4246 transitions. [2023-08-30 10:13:23,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 848 transitions, 6113 flow [2023-08-30 10:13:31,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 848 transitions, 6072 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 10:13:31,215 INFO L231 Difference]: Finished difference. Result has 223 places, 249 transitions, 2561 flow [2023-08-30 10:13:31,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2561, PETRI_PLACES=223, PETRI_TRANSITIONS=249} [2023-08-30 10:13:31,215 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 122 predicate places. [2023-08-30 10:13:31,215 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 249 transitions, 2561 flow [2023-08-30 10:13:31,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 213.25) internal successors, (1706), 8 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:31,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:13:31,216 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] [2023-08-30 10:13:31,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 10:13:31,216 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:13:31,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:13:31,216 INFO L85 PathProgramCache]: Analyzing trace with hash 283560414, now seen corresponding path program 1 times [2023-08-30 10:13:31,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:13:31,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345372862] [2023-08-30 10:13:31,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:13:31,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:13:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:13:31,289 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 10:13:31,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:13:31,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345372862] [2023-08-30 10:13:31,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345372862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:13:31,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:13:31,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:13:31,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083589025] [2023-08-30 10:13:31,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:13:31,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:13:31,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:13:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:13:31,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:13:31,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 476 [2023-08-30 10:13:31,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 249 transitions, 2561 flow. Second operand has 8 states, 8 states have (on average 213.25) internal successors, (1706), 8 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:31,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:13:31,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 476 [2023-08-30 10:13:31,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:13:50,082 INFO L130 PetriNetUnfolder]: 107546/177435 cut-off events. [2023-08-30 10:13:50,082 INFO L131 PetriNetUnfolder]: For 652636/652636 co-relation queries the response was YES. [2023-08-30 10:13:51,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607510 conditions, 177435 events. 107546/177435 cut-off events. For 652636/652636 co-relation queries the response was YES. Maximal size of possible extension queue 3475. Compared 1630971 event pairs, 17751 based on Foata normal form. 507/171338 useless extension candidates. Maximal degree in co-relation 607449. Up to 76494 conditions per place. [2023-08-30 10:13:51,746 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 755 selfloop transitions, 110 changer transitions 0/882 dead transitions. [2023-08-30 10:13:51,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 882 transitions, 6579 flow [2023-08-30 10:13:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:13:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:13:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4933 transitions. [2023-08-30 10:13:51,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181722689075631 [2023-08-30 10:13:51,750 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4933 transitions. [2023-08-30 10:13:51,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4933 transitions. [2023-08-30 10:13:51,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:13:51,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4933 transitions. [2023-08-30 10:13:51,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 246.65) internal successors, (4933), 20 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:51,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 476.0) internal successors, (9996), 21 states have internal predecessors, (9996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:51,759 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 476.0) internal successors, (9996), 21 states have internal predecessors, (9996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:51,759 INFO L175 Difference]: Start difference. First operand has 223 places, 249 transitions, 2561 flow. Second operand 20 states and 4933 transitions. [2023-08-30 10:13:51,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 882 transitions, 6579 flow [2023-08-30 10:14:06,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 882 transitions, 6441 flow, removed 47 selfloop flow, removed 7 redundant places. [2023-08-30 10:14:06,920 INFO L231 Difference]: Finished difference. Result has 238 places, 261 transitions, 2896 flow [2023-08-30 10:14:06,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2896, PETRI_PLACES=238, PETRI_TRANSITIONS=261} [2023-08-30 10:14:06,921 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 137 predicate places. [2023-08-30 10:14:06,921 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 261 transitions, 2896 flow [2023-08-30 10:14:06,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 213.25) internal successors, (1706), 8 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:06,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:14:06,922 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] [2023-08-30 10:14:06,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:14:06,922 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:14:06,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:14:06,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1109805944, now seen corresponding path program 2 times [2023-08-30 10:14:06,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:14:06,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387826667] [2023-08-30 10:14:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:14:06,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:14:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:14:06,992 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 10:14:06,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:14:06,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387826667] [2023-08-30 10:14:06,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387826667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:14:06,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:14:06,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:14:06,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219344011] [2023-08-30 10:14:06,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:14:06,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:14:06,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:14:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:14:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:14:07,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 476 [2023-08-30 10:14:07,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 261 transitions, 2896 flow. Second operand has 8 states, 8 states have (on average 213.25) internal successors, (1706), 8 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:07,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:14:07,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 476 [2023-08-30 10:14:07,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:14:26,539 INFO L130 PetriNetUnfolder]: 106850/174719 cut-off events. [2023-08-30 10:14:26,539 INFO L131 PetriNetUnfolder]: For 601777/601777 co-relation queries the response was YES. [2023-08-30 10:14:27,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607105 conditions, 174719 events. 106850/174719 cut-off events. For 601777/601777 co-relation queries the response was YES. Maximal size of possible extension queue 3537. Compared 1579441 event pairs, 24693 based on Foata normal form. 507/168628 useless extension candidates. Maximal degree in co-relation 607040. Up to 77197 conditions per place. [2023-08-30 10:14:28,180 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 768 selfloop transitions, 113 changer transitions 0/898 dead transitions. [2023-08-30 10:14:28,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 898 transitions, 6747 flow [2023-08-30 10:14:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 10:14:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 10:14:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5161 transitions. [2023-08-30 10:14:28,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163065226090436 [2023-08-30 10:14:28,184 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5161 transitions. [2023-08-30 10:14:28,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5161 transitions. [2023-08-30 10:14:28,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:14:28,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5161 transitions. [2023-08-30 10:14:28,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 245.76190476190476) internal successors, (5161), 21 states have internal predecessors, (5161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:28,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 476.0) internal successors, (10472), 22 states have internal predecessors, (10472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:28,193 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 476.0) internal successors, (10472), 22 states have internal predecessors, (10472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:28,194 INFO L175 Difference]: Start difference. First operand has 238 places, 261 transitions, 2896 flow. Second operand 21 states and 5161 transitions. [2023-08-30 10:14:28,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 898 transitions, 6747 flow [2023-08-30 10:14:42,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 898 transitions, 6567 flow, removed 19 selfloop flow, removed 13 redundant places. [2023-08-30 10:14:42,228 INFO L231 Difference]: Finished difference. Result has 244 places, 260 transitions, 2917 flow [2023-08-30 10:14:42,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2917, PETRI_PLACES=244, PETRI_TRANSITIONS=260} [2023-08-30 10:14:42,229 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 143 predicate places. [2023-08-30 10:14:42,229 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 260 transitions, 2917 flow [2023-08-30 10:14:42,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 213.25) internal successors, (1706), 8 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:42,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:14:42,230 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] [2023-08-30 10:14:42,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 10:14:42,230 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:14:42,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:14:42,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1275827152, now seen corresponding path program 1 times [2023-08-30 10:14:42,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:14:42,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207118876] [2023-08-30 10:14:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:14:42,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:14:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:14:42,265 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 10:14:42,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:14:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207118876] [2023-08-30 10:14:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207118876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:14:42,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:14:42,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:14:42,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406379050] [2023-08-30 10:14:42,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:14:42,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:14:42,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:14:42,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:14:42,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:14:42,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 476 [2023-08-30 10:14:42,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 260 transitions, 2917 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:42,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:14:42,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 476 [2023-08-30 10:14:42,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:09,645 INFO L130 PetriNetUnfolder]: 150698/254788 cut-off events. [2023-08-30 10:15:09,645 INFO L131 PetriNetUnfolder]: For 911874/915210 co-relation queries the response was YES. [2023-08-30 10:15:11,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873537 conditions, 254788 events. 150698/254788 cut-off events. For 911874/915210 co-relation queries the response was YES. Maximal size of possible extension queue 4385. Compared 2497777 event pairs, 42269 based on Foata normal form. 21012/264188 useless extension candidates. Maximal degree in co-relation 873473. Up to 148384 conditions per place. [2023-08-30 10:15:12,125 INFO L137 encePairwiseOnDemand]: 445/476 looper letters, 361 selfloop transitions, 64 changer transitions 0/465 dead transitions. [2023-08-30 10:15:12,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 465 transitions, 6105 flow [2023-08-30 10:15:12,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-08-30 10:15:12,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224089635854342 [2023-08-30 10:15:12,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-08-30 10:15:12,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-08-30 10:15:12,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:12,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-08-30 10:15:12,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,129 INFO L175 Difference]: Start difference. First operand has 244 places, 260 transitions, 2917 flow. Second operand 3 states and 746 transitions. [2023-08-30 10:15:12,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 465 transitions, 6105 flow [2023-08-30 10:15:35,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 465 transitions, 5819 flow, removed 28 selfloop flow, removed 14 redundant places. [2023-08-30 10:15:35,538 INFO L231 Difference]: Finished difference. Result has 233 places, 312 transitions, 3534 flow [2023-08-30 10:15:35,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3534, PETRI_PLACES=233, PETRI_TRANSITIONS=312} [2023-08-30 10:15:35,539 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 132 predicate places. [2023-08-30 10:15:35,539 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 312 transitions, 3534 flow [2023-08-30 10:15:35,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:35,539 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 10:15:35,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 10:15:35,539 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:15:35,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash 397863296, now seen corresponding path program 1 times [2023-08-30 10:15:35,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:35,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000882604] [2023-08-30 10:15:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:35,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:35,610 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 10:15:35,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000882604] [2023-08-30 10:15:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000882604] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610177189] [2023-08-30 10:15:35,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:35,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:35,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:35,613 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 10:15:35,614 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 10:15:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:35,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:15:35,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:35,731 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 10:15:35,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:35,797 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 10:15:35,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610177189] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:35,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:35,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 10:15:35,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495090767] [2023-08-30 10:15:35,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:35,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 10:15:35,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 10:15:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-30 10:15:35,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 476 [2023-08-30 10:15:35,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 312 transitions, 3534 flow. Second operand has 16 states, 16 states have (on average 211.0) internal successors, (3376), 16 states have internal predecessors, (3376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:35,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:35,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 476 [2023-08-30 10:15:35,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand