./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_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_08-cond_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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 09:59:26,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:59:26,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:59:26,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:59:26,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:59:26,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:59:26,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:59:26,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:59:26,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:59:26,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:59:26,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:59:26,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:59:26,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:59:26,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:59:26,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:59:26,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:59:26,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:59:26,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:59:26,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:59:26,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:59:26,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:59:26,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:59:26,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:59:26,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:59:26,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:59:26,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:59:26,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:59:26,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:59:26,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:59:26,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:59:26,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:59:26,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:59:26,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:59:26,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:59:26,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:59:26,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:59:26,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:59:26,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:59:26,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:59:26,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:59:26,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:59:26,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:59:27,017 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:59:27,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:59:27,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:59:27,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:59:27,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:59:27,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:59:27,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:59:27,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:59:27,020 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:59:27,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:59:27,021 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:59:27,021 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:59:27,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:59:27,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:59:27,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:59:27,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:59:27,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:59:27,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:59:27,022 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:59:27,022 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:59:27,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:59:27,022 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:59:27,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:59:27,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:59:27,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:59:27,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:59:27,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:59:27,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:59:27,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:59:27,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:59:27,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:59:27,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:59:27,024 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:59:27,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:59:27,024 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:59:27,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:59:27,025 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:59:27,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:59:27,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:59:27,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:59:27,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:59:27,243 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:59:27,243 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:59:27,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-08-30 09:59:28,168 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:59:28,407 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:59:28,407 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-08-30 09:59:28,420 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/089bd8779/53c0ea3711ec4255998dbd272c5e6d36/FLAGa04596b70 [2023-08-30 09:59:28,430 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/089bd8779/53c0ea3711ec4255998dbd272c5e6d36 [2023-08-30 09:59:28,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:59:28,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:59:28,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:59:28,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:59:28,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:59:28,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@266a3ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28, skipping insertion in model container [2023-08-30 09:59:28,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:59:28,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:59:28,767 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_08-cond_racefree.i[41322,41335] [2023-08-30 09:59:28,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:59:28,796 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:59:28,824 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_08-cond_racefree.i[41322,41335] [2023-08-30 09:59:28,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:59:28,877 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:59:28,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28 WrapperNode [2023-08-30 09:59:28,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:59:28,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:59:28,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:59:28,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:59:28,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,918 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2023-08-30 09:59:28,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:59:28,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:59:28,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:59:28,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:59:28,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,954 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:59:28,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:59:28,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:59:28,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:59:28,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (1/1) ... [2023-08-30 09:59:28,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:59:28,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:59:28,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 09:59:28,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 09:59:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:59:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:59:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:59:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:59:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:59:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:59:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 09:59:29,022 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 09:59:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:59:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:59:29,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:59:29,023 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 09:59:29,153 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:59:29,154 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:59:29,341 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:59:29,346 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:59:29,349 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 09:59:29,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:59:29 BoogieIcfgContainer [2023-08-30 09:59:29,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:59:29,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:59:29,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:59:29,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:59:29,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:59:28" (1/3) ... [2023-08-30 09:59:29,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60450a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:59:29, skipping insertion in model container [2023-08-30 09:59:29,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:59:28" (2/3) ... [2023-08-30 09:59:29,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60450a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:59:29, skipping insertion in model container [2023-08-30 09:59:29,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:59:29" (3/3) ... [2023-08-30 09:59:29,358 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2023-08-30 09:59:29,363 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:59:29,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:59:29,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 09:59:29,370 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:59:29,438 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 09:59:29,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 136 transitions, 280 flow [2023-08-30 09:59:29,538 INFO L130 PetriNetUnfolder]: 23/177 cut-off events. [2023-08-30 09:59:29,538 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:59:29,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 177 events. 23/177 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 402 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 09:59:29,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 136 transitions, 280 flow [2023-08-30 09:59:29,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 133 transitions, 274 flow [2023-08-30 09:59:29,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:59:29,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 133 transitions, 274 flow [2023-08-30 09:59:29,574 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 133 transitions, 274 flow [2023-08-30 09:59:29,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 133 transitions, 274 flow [2023-08-30 09:59:29,610 INFO L130 PetriNetUnfolder]: 22/174 cut-off events. [2023-08-30 09:59:29,610 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:59:29,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 174 events. 22/174 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 404 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 09:59:29,613 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-08-30 09:59:32,488 INFO L134 LiptonReduction]: Checked pairs total: 6410 [2023-08-30 09:59:32,489 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-30 09:59:32,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:59:32,502 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;@68e92f8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:59:32,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 09:59:32,504 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-30 09:59:32,504 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:59:32,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:32,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 09:59:32,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:59:32,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:32,508 INFO L85 PathProgramCache]: Analyzing trace with hash 16205841, now seen corresponding path program 1 times [2023-08-30 09:59:32,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:32,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477799838] [2023-08-30 09:59:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:32,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:32,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:32,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477799838] [2023-08-30 09:59:32,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477799838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:32,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:32,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:59:32,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578643100] [2023-08-30 09:59:32,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:32,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:59:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:59:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:59:32,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 260 [2023-08-30 09:59:32,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:32,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:32,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 260 [2023-08-30 09:59:32,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:32,897 INFO L130 PetriNetUnfolder]: 145/320 cut-off events. [2023-08-30 09:59:32,897 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:59:32,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 320 events. 145/320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1682 event pairs, 0 based on Foata normal form. 25/244 useless extension candidates. Maximal degree in co-relation 601. Up to 292 conditions per place. [2023-08-30 09:59:32,902 INFO L137 encePairwiseOnDemand]: 245/260 looper letters, 40 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 09:59:32,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 180 flow [2023-08-30 09:59:32,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:59:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:59:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-08-30 09:59:32,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532051282051282 [2023-08-30 09:59:32,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-08-30 09:59:32,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-08-30 09:59:32,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:32,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-08-30 09:59:32,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:32,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:32,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:32,932 INFO L175 Difference]: Start difference. First operand has 35 places, 42 transitions, 92 flow. Second operand 3 states and 415 transitions. [2023-08-30 09:59:32,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 180 flow [2023-08-30 09:59:32,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:59:32,938 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 80 flow [2023-08-30 09:59:32,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-30 09:59:32,941 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-30 09:59:32,941 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 80 flow [2023-08-30 09:59:32,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:32,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:32,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:59:32,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:59:32,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:59:32,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1606052665, now seen corresponding path program 1 times [2023-08-30 09:59:32,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:32,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315009301] [2023-08-30 09:59:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:33,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:33,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315009301] [2023-08-30 09:59:33,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315009301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:33,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:33,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:59:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953039101] [2023-08-30 09:59:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:33,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:59:33,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:33,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:59:33,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:59:33,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 260 [2023-08-30 09:59:33,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:33,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 260 [2023-08-30 09:59:33,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:33,118 INFO L130 PetriNetUnfolder]: 118/256 cut-off events. [2023-08-30 09:59:33,118 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 09:59:33,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 256 events. 118/256 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 985 event pairs, 27 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 537. Up to 195 conditions per place. [2023-08-30 09:59:33,120 INFO L137 encePairwiseOnDemand]: 255/260 looper letters, 36 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-30 09:59:33,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 181 flow [2023-08-30 09:59:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:59:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:59:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2023-08-30 09:59:33,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102564102564102 [2023-08-30 09:59:33,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2023-08-30 09:59:33,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2023-08-30 09:59:33,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:33,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2023-08-30 09:59:33,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,125 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 80 flow. Second operand 3 states and 398 transitions. [2023-08-30 09:59:33,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 181 flow [2023-08-30 09:59:33,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:59:33,126 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 80 flow [2023-08-30 09:59:33,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 09:59:33,127 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 09:59:33,127 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 80 flow [2023-08-30 09:59:33,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:33,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:33,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:59:33,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:59:33,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:33,128 INFO L85 PathProgramCache]: Analyzing trace with hash 19593358, now seen corresponding path program 1 times [2023-08-30 09:59:33,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:33,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331849018] [2023-08-30 09:59:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:33,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:33,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:33,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331849018] [2023-08-30 09:59:33,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331849018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:33,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:33,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:59:33,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246547880] [2023-08-30 09:59:33,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:33,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:59:33,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:33,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:59:33,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 09:59:33,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 260 [2023-08-30 09:59:33,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:33,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 260 [2023-08-30 09:59:33,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:33,254 INFO L130 PetriNetUnfolder]: 106/232 cut-off events. [2023-08-30 09:59:33,254 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 09:59:33,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 232 events. 106/232 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 835 event pairs, 23 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 506. Up to 95 conditions per place. [2023-08-30 09:59:33,256 INFO L137 encePairwiseOnDemand]: 256/260 looper letters, 43 selfloop transitions, 3 changer transitions 3/51 dead transitions. [2023-08-30 09:59:33,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 51 transitions, 234 flow [2023-08-30 09:59:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:59:33,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:59:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 526 transitions. [2023-08-30 09:59:33,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057692307692307 [2023-08-30 09:59:33,257 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 526 transitions. [2023-08-30 09:59:33,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 526 transitions. [2023-08-30 09:59:33,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:33,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 526 transitions. [2023-08-30 09:59:33,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,261 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,261 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 80 flow. Second operand 4 states and 526 transitions. [2023-08-30 09:59:33,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 51 transitions, 234 flow [2023-08-30 09:59:33,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:59:33,262 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 80 flow [2023-08-30 09:59:33,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-30 09:59:33,263 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 09:59:33,263 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 80 flow [2023-08-30 09:59:33,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:33,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:33,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 09:59:33,264 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:59:33,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash 19593344, now seen corresponding path program 1 times [2023-08-30 09:59:33,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:33,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600745641] [2023-08-30 09:59:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:33,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:33,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:33,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600745641] [2023-08-30 09:59:33,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600745641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:33,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:33,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:59:33,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625979549] [2023-08-30 09:59:33,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:33,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:59:33,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:33,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:59:33,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 09:59:33,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 260 [2023-08-30 09:59:33,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:33,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 260 [2023-08-30 09:59:33,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:33,399 INFO L130 PetriNetUnfolder]: 94/208 cut-off events. [2023-08-30 09:59:33,399 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 09:59:33,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 208 events. 94/208 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 723 event pairs, 22 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 466. Up to 76 conditions per place. [2023-08-30 09:59:33,400 INFO L137 encePairwiseOnDemand]: 256/260 looper letters, 38 selfloop transitions, 3 changer transitions 8/50 dead transitions. [2023-08-30 09:59:33,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 232 flow [2023-08-30 09:59:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:59:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:59:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 525 transitions. [2023-08-30 09:59:33,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048076923076923 [2023-08-30 09:59:33,403 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 525 transitions. [2023-08-30 09:59:33,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 525 transitions. [2023-08-30 09:59:33,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:33,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 525 transitions. [2023-08-30 09:59:33,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,406 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,406 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 80 flow. Second operand 4 states and 525 transitions. [2023-08-30 09:59:33,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 232 flow [2023-08-30 09:59:33,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:59:33,408 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 68 flow [2023-08-30 09:59:33,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-30 09:59:33,409 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-30 09:59:33,409 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 68 flow [2023-08-30 09:59:33,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:33,409 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 09:59:33,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 09:59:33,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 09:59:33,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:33,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1382384476, now seen corresponding path program 1 times [2023-08-30 09:59:33,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:33,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507479774] [2023-08-30 09:59:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:33,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:33,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:33,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507479774] [2023-08-30 09:59:33,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507479774] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:59:33,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564973463] [2023-08-30 09:59:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:33,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:33,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:59:33,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:59:33,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 09:59:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:33,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:59:33,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:59:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:33,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:59:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564973463] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:59:33,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:59:33,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-08-30 09:59:33,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956350539] [2023-08-30 09:59:33,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:59:33,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:59:33,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:59:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:59:33,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2023-08-30 09:59:33,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 68 flow. Second operand has 8 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:33,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2023-08-30 09:59:33,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:33,744 INFO L130 PetriNetUnfolder]: 16/46 cut-off events. [2023-08-30 09:59:33,744 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 09:59:33,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 46 events. 16/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 9/55 useless extension candidates. Maximal degree in co-relation 103. Up to 34 conditions per place. [2023-08-30 09:59:33,745 INFO L137 encePairwiseOnDemand]: 256/260 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-30 09:59:33,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 22 transitions, 104 flow [2023-08-30 09:59:33,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:59:33,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:59:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2023-08-30 09:59:33,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44519230769230766 [2023-08-30 09:59:33,747 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 463 transitions. [2023-08-30 09:59:33,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 463 transitions. [2023-08-30 09:59:33,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:33,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 463 transitions. [2023-08-30 09:59:33,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,751 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,751 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 68 flow. Second operand 4 states and 463 transitions. [2023-08-30 09:59:33,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 22 transitions, 104 flow [2023-08-30 09:59:33,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 09:59:33,752 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-30 09:59:33,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-30 09:59:33,752 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -16 predicate places. [2023-08-30 09:59:33,753 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-30 09:59:33,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:33,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-08-30 09:59:33,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-08-30 09:59:33,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-08-30 09:59:33,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-08-30 09:59:33,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-08-30 09:59:33,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-08-30 09:59:33,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-08-30 09:59:33,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-08-30 09:59:33,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-08-30 09:59:33,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-08-30 09:59:33,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-08-30 09:59:33,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-08-30 09:59:33,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 09:59:33,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:33,964 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 09:59:33,965 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 09:59:33,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 136 transitions, 280 flow [2023-08-30 09:59:33,978 INFO L130 PetriNetUnfolder]: 23/177 cut-off events. [2023-08-30 09:59:33,992 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:59:33,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 177 events. 23/177 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 402 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 09:59:33,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 136 transitions, 280 flow [2023-08-30 09:59:33,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 127 transitions, 259 flow [2023-08-30 09:59:33,994 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:59:33,994 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 127 transitions, 259 flow [2023-08-30 09:59:33,994 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 127 transitions, 259 flow [2023-08-30 09:59:33,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 127 transitions, 259 flow [2023-08-30 09:59:34,002 INFO L130 PetriNetUnfolder]: 22/168 cut-off events. [2023-08-30 09:59:34,002 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:59:34,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 168 events. 22/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 390 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 09:59:34,004 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-08-30 09:59:36,438 INFO L134 LiptonReduction]: Checked pairs total: 6139 [2023-08-30 09:59:36,439 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-30 09:59:36,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 09:59:36,440 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;@68e92f8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:59:36,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 09:59:36,443 INFO L130 PetriNetUnfolder]: 5/30 cut-off events. [2023-08-30 09:59:36,443 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:59:36,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:36,443 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 09:59:36,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 09:59:36,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1926559216, now seen corresponding path program 1 times [2023-08-30 09:59:36,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:36,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856065010] [2023-08-30 09:59:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:36,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:59:36,452 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 09:59:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:59:36,466 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 09:59:36,466 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 09:59:36,467 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 09:59:36,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 09:59:36,467 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 09:59:36,467 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 09:59:36,468 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 09:59:36,468 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 09:59:36,478 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 09:59:36,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 174 transitions, 366 flow [2023-08-30 09:59:36,494 INFO L130 PetriNetUnfolder]: 40/292 cut-off events. [2023-08-30 09:59:36,494 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:59:36,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 40/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 844 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 179. Up to 9 conditions per place. [2023-08-30 09:59:36,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 174 transitions, 366 flow [2023-08-30 09:59:36,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 174 transitions, 366 flow [2023-08-30 09:59:36,497 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:59:36,497 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 174 transitions, 366 flow [2023-08-30 09:59:36,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 174 transitions, 366 flow [2023-08-30 09:59:36,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 174 transitions, 366 flow [2023-08-30 09:59:36,516 INFO L130 PetriNetUnfolder]: 40/292 cut-off events. [2023-08-30 09:59:36,516 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:59:36,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 40/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 844 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 179. Up to 9 conditions per place. [2023-08-30 09:59:36,521 INFO L119 LiptonReduction]: Number of co-enabled transitions 11304 [2023-08-30 09:59:39,170 INFO L134 LiptonReduction]: Checked pairs total: 30340 [2023-08-30 09:59:39,170 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-30 09:59:39,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:59:39,172 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;@68e92f8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:59:39,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 09:59:39,174 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 09:59:39,174 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:59:39,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:39,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:59:39,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:39,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:39,175 INFO L85 PathProgramCache]: Analyzing trace with hash 953323582, now seen corresponding path program 1 times [2023-08-30 09:59:39,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:39,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962347772] [2023-08-30 09:59:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962347772] [2023-08-30 09:59:39,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962347772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:39,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:39,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:59:39,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003925656] [2023-08-30 09:59:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:39,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:59:39,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:59:39,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:59:39,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 315 [2023-08-30 09:59:39,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:39,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:39,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 315 [2023-08-30 09:59:39,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:39,730 INFO L130 PetriNetUnfolder]: 6206/9937 cut-off events. [2023-08-30 09:59:39,730 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 09:59:39,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19729 conditions, 9937 events. 6206/9937 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 62801 event pairs, 2814 based on Foata normal form. 681/7350 useless extension candidates. Maximal degree in co-relation 2114. Up to 9663 conditions per place. [2023-08-30 09:59:39,763 INFO L137 encePairwiseOnDemand]: 294/315 looper letters, 64 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 09:59:39,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 292 flow [2023-08-30 09:59:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:59:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:59:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-30 09:59:39,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661375661375662 [2023-08-30 09:59:39,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-30 09:59:39,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-30 09:59:39,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:39,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-30 09:59:39,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:39,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:39,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:39,768 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 158 flow. Second operand 3 states and 535 transitions. [2023-08-30 09:59:39,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 292 flow [2023-08-30 09:59:39,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:59:39,769 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 146 flow [2023-08-30 09:59:39,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 09:59:39,770 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2023-08-30 09:59:39,770 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 146 flow [2023-08-30 09:59:39,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:39,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:39,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:39,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 09:59:39,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:39,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:39,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1323487704, now seen corresponding path program 1 times [2023-08-30 09:59:39,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:39,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569157882] [2023-08-30 09:59:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:39,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:39,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:39,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569157882] [2023-08-30 09:59:39,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569157882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:39,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:39,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:59:39,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452711134] [2023-08-30 09:59:39,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:39,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:59:39,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:39,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:59:39,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:59:39,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 315 [2023-08-30 09:59:39,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:39,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:39,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 315 [2023-08-30 09:59:39,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:40,275 INFO L130 PetriNetUnfolder]: 5596/8840 cut-off events. [2023-08-30 09:59:40,275 INFO L131 PetriNetUnfolder]: For 526/526 co-relation queries the response was YES. [2023-08-30 09:59:40,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18766 conditions, 8840 events. 5596/8840 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53690 event pairs, 2077 based on Foata normal form. 0/6289 useless extension candidates. Maximal degree in co-relation 18673. Up to 8160 conditions per place. [2023-08-30 09:59:40,309 INFO L137 encePairwiseOnDemand]: 307/315 looper letters, 71 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-30 09:59:40,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 358 flow [2023-08-30 09:59:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:59:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:59:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-30 09:59:40,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2023-08-30 09:59:40,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-30 09:59:40,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-30 09:59:40,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:40,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-30 09:59:40,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:40,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:40,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:40,314 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 146 flow. Second operand 3 states and 518 transitions. [2023-08-30 09:59:40,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 358 flow [2023-08-30 09:59:40,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:59:40,319 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 171 flow [2023-08-30 09:59:40,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-30 09:59:40,320 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-08-30 09:59:40,320 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 171 flow [2023-08-30 09:59:40,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:40,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:40,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:59:40,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 09:59:40,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:40,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1950640927, now seen corresponding path program 1 times [2023-08-30 09:59:40,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:40,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134370688] [2023-08-30 09:59:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:40,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:59:40,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:40,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134370688] [2023-08-30 09:59:40,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134370688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:40,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:40,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:59:40,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173974646] [2023-08-30 09:59:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:40,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:59:40,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:59:40,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:59:40,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 315 [2023-08-30 09:59:40,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:40,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:40,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 315 [2023-08-30 09:59:40,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:40,837 INFO L130 PetriNetUnfolder]: 5216/8235 cut-off events. [2023-08-30 09:59:40,837 INFO L131 PetriNetUnfolder]: For 813/813 co-relation queries the response was YES. [2023-08-30 09:59:40,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18512 conditions, 8235 events. 5216/8235 cut-off events. For 813/813 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 52273 event pairs, 933 based on Foata normal form. 0/6438 useless extension candidates. Maximal degree in co-relation 12597. Up to 6576 conditions per place. [2023-08-30 09:59:40,863 INFO L137 encePairwiseOnDemand]: 311/315 looper letters, 79 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-30 09:59:40,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 413 flow [2023-08-30 09:59:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:59:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:59:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 09:59:40,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5502645502645502 [2023-08-30 09:59:40,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 09:59:40,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 09:59:40,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:40,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 09:59:40,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:40,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:40,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:40,868 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 171 flow. Second operand 3 states and 520 transitions. [2023-08-30 09:59:40,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 413 flow [2023-08-30 09:59:40,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:59:40,870 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 180 flow [2023-08-30 09:59:40,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-30 09:59:40,873 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2023-08-30 09:59:40,873 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 180 flow [2023-08-30 09:59:40,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:40,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:40,873 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:59:40,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 09:59:40,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:40,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1950640890, now seen corresponding path program 1 times [2023-08-30 09:59:40,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:40,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364627835] [2023-08-30 09:59:40,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:40,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:40,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:40,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364627835] [2023-08-30 09:59:40,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364627835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:59:40,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950092734] [2023-08-30 09:59:40,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:40,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:40,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:59:40,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:59:40,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 09:59:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:40,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:59:40,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:59:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:40,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:59:40,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950092734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:40,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:59:40,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 09:59:40,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597773252] [2023-08-30 09:59:40,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:40,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:59:40,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:59:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:59:40,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 315 [2023-08-30 09:59:40,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:40,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:40,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 315 [2023-08-30 09:59:40,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:41,429 INFO L130 PetriNetUnfolder]: 4836/7743 cut-off events. [2023-08-30 09:59:41,429 INFO L131 PetriNetUnfolder]: For 2422/2422 co-relation queries the response was YES. [2023-08-30 09:59:41,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17736 conditions, 7743 events. 4836/7743 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 45819 event pairs, 2384 based on Foata normal form. 205/6398 useless extension candidates. Maximal degree in co-relation 2985. Up to 7578 conditions per place. [2023-08-30 09:59:41,455 INFO L137 encePairwiseOnDemand]: 312/315 looper letters, 62 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 09:59:41,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 330 flow [2023-08-30 09:59:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:59:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:59:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 655 transitions. [2023-08-30 09:59:41,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198412698412699 [2023-08-30 09:59:41,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 655 transitions. [2023-08-30 09:59:41,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 655 transitions. [2023-08-30 09:59:41,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:41,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 655 transitions. [2023-08-30 09:59:41,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:41,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:41,461 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:41,461 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 180 flow. Second operand 4 states and 655 transitions. [2023-08-30 09:59:41,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 330 flow [2023-08-30 09:59:41,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:59:41,464 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 176 flow [2023-08-30 09:59:41,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2023-08-30 09:59:41,465 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2023-08-30 09:59:41,465 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 176 flow [2023-08-30 09:59:41,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:41,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:41,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:41,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 09:59:41,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 09:59:41,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:41,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1724089484, now seen corresponding path program 1 times [2023-08-30 09:59:41,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:41,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146942874] [2023-08-30 09:59:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:41,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:41,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:41,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146942874] [2023-08-30 09:59:41,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146942874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:41,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:41,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:59:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613027088] [2023-08-30 09:59:41,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:41,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:59:41,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:59:41,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:59:41,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 315 [2023-08-30 09:59:41,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:41,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:41,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 315 [2023-08-30 09:59:41,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:42,391 INFO L130 PetriNetUnfolder]: 6019/9614 cut-off events. [2023-08-30 09:59:42,392 INFO L131 PetriNetUnfolder]: For 2169/2169 co-relation queries the response was YES. [2023-08-30 09:59:42,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21721 conditions, 9614 events. 6019/9614 cut-off events. For 2169/2169 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 60128 event pairs, 929 based on Foata normal form. 0/7909 useless extension candidates. Maximal degree in co-relation 21615. Up to 5273 conditions per place. [2023-08-30 09:59:42,433 INFO L137 encePairwiseOnDemand]: 300/315 looper letters, 170 selfloop transitions, 19 changer transitions 0/194 dead transitions. [2023-08-30 09:59:42,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 194 transitions, 958 flow [2023-08-30 09:59:42,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:59:42,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:59:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1190 transitions. [2023-08-30 09:59:42,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-08-30 09:59:42,437 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1190 transitions. [2023-08-30 09:59:42,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1190 transitions. [2023-08-30 09:59:42,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:42,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1190 transitions. [2023-08-30 09:59:42,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:42,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:42,441 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:42,441 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 176 flow. Second operand 7 states and 1190 transitions. [2023-08-30 09:59:42,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 194 transitions, 958 flow [2023-08-30 09:59:42,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 194 transitions, 951 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:59:42,446 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 332 flow [2023-08-30 09:59:42,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-30 09:59:42,447 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2023-08-30 09:59:42,447 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 332 flow [2023-08-30 09:59:42,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:42,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:42,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:42,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 09:59:42,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:42,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1724089555, now seen corresponding path program 1 times [2023-08-30 09:59:42,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:42,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549188543] [2023-08-30 09:59:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549188543] [2023-08-30 09:59:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549188543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:59:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492261035] [2023-08-30 09:59:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:42,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:59:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:59:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:59:42,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 315 [2023-08-30 09:59:42,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:42,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:42,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 315 [2023-08-30 09:59:42,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:43,119 INFO L130 PetriNetUnfolder]: 5690/9254 cut-off events. [2023-08-30 09:59:43,120 INFO L131 PetriNetUnfolder]: For 6454/6454 co-relation queries the response was YES. [2023-08-30 09:59:43,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25270 conditions, 9254 events. 5690/9254 cut-off events. For 6454/6454 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 59012 event pairs, 864 based on Foata normal form. 315/8888 useless extension candidates. Maximal degree in co-relation 25159. Up to 5381 conditions per place. [2023-08-30 09:59:43,157 INFO L137 encePairwiseOnDemand]: 300/315 looper letters, 173 selfloop transitions, 24 changer transitions 0/202 dead transitions. [2023-08-30 09:59:43,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 202 transitions, 1152 flow [2023-08-30 09:59:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:59:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:59:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1187 transitions. [2023-08-30 09:59:43,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5383219954648526 [2023-08-30 09:59:43,159 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1187 transitions. [2023-08-30 09:59:43,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1187 transitions. [2023-08-30 09:59:43,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:43,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1187 transitions. [2023-08-30 09:59:43,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.57142857142858) internal successors, (1187), 7 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:43,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:43,164 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:43,164 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 332 flow. Second operand 7 states and 1187 transitions. [2023-08-30 09:59:43,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 202 transitions, 1152 flow [2023-08-30 09:59:43,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 202 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:59:43,183 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 522 flow [2023-08-30 09:59:43,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2023-08-30 09:59:43,184 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2023-08-30 09:59:43,184 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 522 flow [2023-08-30 09:59:43,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:43,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:43,185 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:43,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 09:59:43,185 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:43,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:43,186 INFO L85 PathProgramCache]: Analyzing trace with hash -406562327, now seen corresponding path program 1 times [2023-08-30 09:59:43,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:43,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850563779] [2023-08-30 09:59:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:43,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:43,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:43,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850563779] [2023-08-30 09:59:43,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850563779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:43,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:43,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:59:43,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550920697] [2023-08-30 09:59:43,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:43,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:59:43,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:43,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:59:43,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:59:43,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 315 [2023-08-30 09:59:43,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 522 flow. Second operand has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:43,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:43,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 315 [2023-08-30 09:59:43,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:43,958 INFO L130 PetriNetUnfolder]: 6254/10015 cut-off events. [2023-08-30 09:59:43,958 INFO L131 PetriNetUnfolder]: For 16581/16581 co-relation queries the response was YES. [2023-08-30 09:59:43,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30792 conditions, 10015 events. 6254/10015 cut-off events. For 16581/16581 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 62747 event pairs, 1390 based on Foata normal form. 246/9539 useless extension candidates. Maximal degree in co-relation 30670. Up to 6435 conditions per place. [2023-08-30 09:59:44,010 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 152 selfloop transitions, 22 changer transitions 0/179 dead transitions. [2023-08-30 09:59:44,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 179 transitions, 1225 flow [2023-08-30 09:59:44,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:59:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:59:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1003 transitions. [2023-08-30 09:59:44,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306878306878307 [2023-08-30 09:59:44,013 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1003 transitions. [2023-08-30 09:59:44,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1003 transitions. [2023-08-30 09:59:44,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:44,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1003 transitions. [2023-08-30 09:59:44,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.16666666666666) internal successors, (1003), 6 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:44,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:44,018 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:44,018 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 522 flow. Second operand 6 states and 1003 transitions. [2023-08-30 09:59:44,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 179 transitions, 1225 flow [2023-08-30 09:59:44,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 179 transitions, 1216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:59:44,083 INFO L231 Difference]: Finished difference. Result has 89 places, 95 transitions, 720 flow [2023-08-30 09:59:44,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=720, PETRI_PLACES=89, PETRI_TRANSITIONS=95} [2023-08-30 09:59:44,084 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2023-08-30 09:59:44,084 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 95 transitions, 720 flow [2023-08-30 09:59:44,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:44,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:44,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:44,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 09:59:44,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:44,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash -406562302, now seen corresponding path program 1 times [2023-08-30 09:59:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:44,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019123978] [2023-08-30 09:59:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:44,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:44,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:44,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019123978] [2023-08-30 09:59:44,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019123978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:44,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:59:44,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334494590] [2023-08-30 09:59:44,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:44,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:59:44,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:59:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:59:44,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 315 [2023-08-30 09:59:44,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 95 transitions, 720 flow. Second operand has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:44,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:44,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 315 [2023-08-30 09:59:44,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:44,906 INFO L130 PetriNetUnfolder]: 5732/9222 cut-off events. [2023-08-30 09:59:44,906 INFO L131 PetriNetUnfolder]: For 23447/23447 co-relation queries the response was YES. [2023-08-30 09:59:44,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29921 conditions, 9222 events. 5732/9222 cut-off events. For 23447/23447 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 57238 event pairs, 1323 based on Foata normal form. 246/8793 useless extension candidates. Maximal degree in co-relation 29793. Up to 6117 conditions per place. [2023-08-30 09:59:44,954 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 147 selfloop transitions, 20 changer transitions 0/172 dead transitions. [2023-08-30 09:59:44,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 172 transitions, 1234 flow [2023-08-30 09:59:44,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:59:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:59:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1002 transitions. [2023-08-30 09:59:44,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301587301587302 [2023-08-30 09:59:44,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1002 transitions. [2023-08-30 09:59:44,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1002 transitions. [2023-08-30 09:59:44,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:44,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1002 transitions. [2023-08-30 09:59:44,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:44,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:44,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:44,961 INFO L175 Difference]: Start difference. First operand has 89 places, 95 transitions, 720 flow. Second operand 6 states and 1002 transitions. [2023-08-30 09:59:44,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 172 transitions, 1234 flow [2023-08-30 09:59:45,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 172 transitions, 1211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:59:45,058 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 654 flow [2023-08-30 09:59:45,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2023-08-30 09:59:45,059 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2023-08-30 09:59:45,060 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 654 flow [2023-08-30 09:59:45,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:45,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:45,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:45,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 09:59:45,061 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:45,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:45,061 INFO L85 PathProgramCache]: Analyzing trace with hash -624135403, now seen corresponding path program 1 times [2023-08-30 09:59:45,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:45,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693367546] [2023-08-30 09:59:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:45,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:59:45,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693367546] [2023-08-30 09:59:45,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693367546] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:59:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719985473] [2023-08-30 09:59:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:45,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:45,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:59:45,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:59:45,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 09:59:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:45,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:59:45,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:59:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:45,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:59:45,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719985473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:45,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:59:45,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-30 09:59:45,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627778193] [2023-08-30 09:59:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:45,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:59:45,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:45,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:59:45,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-30 09:59:45,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 315 [2023-08-30 09:59:45,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 654 flow. Second operand has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:45,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:45,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 315 [2023-08-30 09:59:45,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:46,086 INFO L130 PetriNetUnfolder]: 7624/12274 cut-off events. [2023-08-30 09:59:46,087 INFO L131 PetriNetUnfolder]: For 30624/30624 co-relation queries the response was YES. [2023-08-30 09:59:46,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39226 conditions, 12274 events. 7624/12274 cut-off events. For 30624/30624 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 79956 event pairs, 1552 based on Foata normal form. 264/11614 useless extension candidates. Maximal degree in co-relation 39097. Up to 4876 conditions per place. [2023-08-30 09:59:46,138 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 184 selfloop transitions, 48 changer transitions 0/237 dead transitions. [2023-08-30 09:59:46,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 237 transitions, 1710 flow [2023-08-30 09:59:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:59:46,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:59:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1202 transitions. [2023-08-30 09:59:46,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545124716553288 [2023-08-30 09:59:46,141 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1202 transitions. [2023-08-30 09:59:46,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1202 transitions. [2023-08-30 09:59:46,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:46,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1202 transitions. [2023-08-30 09:59:46,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.71428571428572) internal successors, (1202), 7 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:46,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:46,146 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:46,146 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 654 flow. Second operand 7 states and 1202 transitions. [2023-08-30 09:59:46,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 237 transitions, 1710 flow [2023-08-30 09:59:46,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 237 transitions, 1694 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 09:59:46,228 INFO L231 Difference]: Finished difference. Result has 97 places, 109 transitions, 1001 flow [2023-08-30 09:59:46,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1001, PETRI_PLACES=97, PETRI_TRANSITIONS=109} [2023-08-30 09:59:46,228 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2023-08-30 09:59:46,228 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 109 transitions, 1001 flow [2023-08-30 09:59:46,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:46,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:46,229 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:46,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 09:59:46,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:46,435 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:46,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1720787827, now seen corresponding path program 1 times [2023-08-30 09:59:46,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:46,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143475284] [2023-08-30 09:59:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:46,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:46,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:46,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143475284] [2023-08-30 09:59:46,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143475284] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:46,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:46,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:59:46,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377773818] [2023-08-30 09:59:46,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:46,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:59:46,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:46,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:59:46,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:59:46,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 315 [2023-08-30 09:59:46,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 109 transitions, 1001 flow. Second operand has 7 states, 7 states have (on average 141.28571428571428) internal successors, (989), 7 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:46,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:46,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 315 [2023-08-30 09:59:46,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:47,604 INFO L130 PetriNetUnfolder]: 7846/12700 cut-off events. [2023-08-30 09:59:47,604 INFO L131 PetriNetUnfolder]: For 41173/41173 co-relation queries the response was YES. [2023-08-30 09:59:47,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43872 conditions, 12700 events. 7846/12700 cut-off events. For 41173/41173 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 84165 event pairs, 1903 based on Foata normal form. 138/11874 useless extension candidates. Maximal degree in co-relation 43733. Up to 8489 conditions per place. [2023-08-30 09:59:47,742 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 240 selfloop transitions, 31 changer transitions 0/276 dead transitions. [2023-08-30 09:59:47,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 276 transitions, 2092 flow [2023-08-30 09:59:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:59:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:59:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1619 transitions. [2023-08-30 09:59:47,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513968253968254 [2023-08-30 09:59:47,746 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1619 transitions. [2023-08-30 09:59:47,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1619 transitions. [2023-08-30 09:59:47,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:47,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1619 transitions. [2023-08-30 09:59:47,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.9) internal successors, (1619), 10 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:47,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:47,753 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:47,753 INFO L175 Difference]: Start difference. First operand has 97 places, 109 transitions, 1001 flow. Second operand 10 states and 1619 transitions. [2023-08-30 09:59:47,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 276 transitions, 2092 flow [2023-08-30 09:59:47,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 276 transitions, 2060 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-08-30 09:59:47,890 INFO L231 Difference]: Finished difference. Result has 110 places, 116 transitions, 1144 flow [2023-08-30 09:59:47,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1144, PETRI_PLACES=110, PETRI_TRANSITIONS=116} [2023-08-30 09:59:47,891 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2023-08-30 09:59:47,891 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 116 transitions, 1144 flow [2023-08-30 09:59:47,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.28571428571428) internal successors, (989), 7 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:47,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:47,892 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:47,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 09:59:47,892 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:47,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash -624135446, now seen corresponding path program 1 times [2023-08-30 09:59:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:47,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436046553] [2023-08-30 09:59:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:47,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:59:47,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:47,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436046553] [2023-08-30 09:59:47,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436046553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:59:47,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527599449] [2023-08-30 09:59:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:47,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:47,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:59:47,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:59:47,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 09:59:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:48,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:59:48,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:59:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:59:48,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:59:48,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527599449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:48,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:59:48,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-08-30 09:59:48,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119746662] [2023-08-30 09:59:48,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:48,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:59:48,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:48,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:59:48,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-30 09:59:48,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 315 [2023-08-30 09:59:48,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 116 transitions, 1144 flow. Second operand has 6 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:48,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:48,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 315 [2023-08-30 09:59:48,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:49,105 INFO L130 PetriNetUnfolder]: 8074/13148 cut-off events. [2023-08-30 09:59:49,105 INFO L131 PetriNetUnfolder]: For 47202/47202 co-relation queries the response was YES. [2023-08-30 09:59:49,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47096 conditions, 13148 events. 8074/13148 cut-off events. For 47202/47202 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 88921 event pairs, 1196 based on Foata normal form. 42/12177 useless extension candidates. Maximal degree in co-relation 46950. Up to 3215 conditions per place. [2023-08-30 09:59:49,173 INFO L137 encePairwiseOnDemand]: 301/315 looper letters, 218 selfloop transitions, 84 changer transitions 0/307 dead transitions. [2023-08-30 09:59:49,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 307 transitions, 2525 flow [2023-08-30 09:59:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:59:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:59:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1478 transitions. [2023-08-30 09:59:49,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213403880070546 [2023-08-30 09:59:49,176 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1478 transitions. [2023-08-30 09:59:49,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1478 transitions. [2023-08-30 09:59:49,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:49,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1478 transitions. [2023-08-30 09:59:49,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.22222222222223) internal successors, (1478), 9 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:49,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 315.0) internal successors, (3150), 10 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:49,182 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 315.0) internal successors, (3150), 10 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:49,182 INFO L175 Difference]: Start difference. First operand has 110 places, 116 transitions, 1144 flow. Second operand 9 states and 1478 transitions. [2023-08-30 09:59:49,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 307 transitions, 2525 flow [2023-08-30 09:59:49,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 307 transitions, 2422 flow, removed 33 selfloop flow, removed 4 redundant places. [2023-08-30 09:59:49,420 INFO L231 Difference]: Finished difference. Result has 116 places, 143 transitions, 1560 flow [2023-08-30 09:59:49,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1560, PETRI_PLACES=116, PETRI_TRANSITIONS=143} [2023-08-30 09:59:49,420 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 59 predicate places. [2023-08-30 09:59:49,420 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 143 transitions, 1560 flow [2023-08-30 09:59:49,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:49,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:49,421 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:49,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 09:59:49,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 09:59:49,626 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:49,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2010135241, now seen corresponding path program 2 times [2023-08-30 09:59:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:49,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122534009] [2023-08-30 09:59:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:49,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:49,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122534009] [2023-08-30 09:59:49,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122534009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:49,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:49,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:59:49,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190022090] [2023-08-30 09:59:49,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:49,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:59:49,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:49,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:59:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:59:49,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 315 [2023-08-30 09:59:49,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 143 transitions, 1560 flow. Second operand has 7 states, 7 states have (on average 141.28571428571428) internal successors, (989), 7 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:49,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:49,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 315 [2023-08-30 09:59:49,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:50,944 INFO L130 PetriNetUnfolder]: 8086/13056 cut-off events. [2023-08-30 09:59:50,945 INFO L131 PetriNetUnfolder]: For 54077/54077 co-relation queries the response was YES. [2023-08-30 09:59:50,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49818 conditions, 13056 events. 8086/13056 cut-off events. For 54077/54077 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 86389 event pairs, 1688 based on Foata normal form. 150/12210 useless extension candidates. Maximal degree in co-relation 49664. Up to 8617 conditions per place. [2023-08-30 09:59:51,013 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 285 selfloop transitions, 44 changer transitions 0/334 dead transitions. [2023-08-30 09:59:51,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 334 transitions, 2794 flow [2023-08-30 09:59:51,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:59:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:59:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1932 transitions. [2023-08-30 09:59:51,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2023-08-30 09:59:51,017 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1932 transitions. [2023-08-30 09:59:51,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1932 transitions. [2023-08-30 09:59:51,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:51,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1932 transitions. [2023-08-30 09:59:51,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 161.0) internal successors, (1932), 12 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:51,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:51,023 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:51,023 INFO L175 Difference]: Start difference. First operand has 116 places, 143 transitions, 1560 flow. Second operand 12 states and 1932 transitions. [2023-08-30 09:59:51,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 334 transitions, 2794 flow [2023-08-30 09:59:51,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 334 transitions, 2651 flow, removed 40 selfloop flow, removed 5 redundant places. [2023-08-30 09:59:51,357 INFO L231 Difference]: Finished difference. Result has 125 places, 141 transitions, 1543 flow [2023-08-30 09:59:51,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1543, PETRI_PLACES=125, PETRI_TRANSITIONS=141} [2023-08-30 09:59:51,358 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 68 predicate places. [2023-08-30 09:59:51,358 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 141 transitions, 1543 flow [2023-08-30 09:59:51,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.28571428571428) internal successors, (989), 7 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:51,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:51,359 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:51,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 09:59:51,359 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:51,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2011000212, now seen corresponding path program 1 times [2023-08-30 09:59:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:51,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633975249] [2023-08-30 09:59:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:51,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:51,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:51,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633975249] [2023-08-30 09:59:51,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633975249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:51,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:51,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:59:51,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503086513] [2023-08-30 09:59:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:51,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:59:51,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:51,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:59:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:59:51,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 315 [2023-08-30 09:59:51,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 141 transitions, 1543 flow. Second operand has 7 states, 7 states have (on average 141.28571428571428) internal successors, (989), 7 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:51,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:51,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 315 [2023-08-30 09:59:51,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:52,659 INFO L130 PetriNetUnfolder]: 7732/12452 cut-off events. [2023-08-30 09:59:52,659 INFO L131 PetriNetUnfolder]: For 49229/49229 co-relation queries the response was YES. [2023-08-30 09:59:52,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46555 conditions, 12452 events. 7732/12452 cut-off events. For 49229/49229 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 81698 event pairs, 1262 based on Foata normal form. 150/11654 useless extension candidates. Maximal degree in co-relation 46398. Up to 6586 conditions per place. [2023-08-30 09:59:52,721 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 281 selfloop transitions, 59 changer transitions 3/348 dead transitions. [2023-08-30 09:59:52,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 348 transitions, 2751 flow [2023-08-30 09:59:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 09:59:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 09:59:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2232 transitions. [2023-08-30 09:59:52,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2023-08-30 09:59:52,726 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2232 transitions. [2023-08-30 09:59:52,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2232 transitions. [2023-08-30 09:59:52,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:52,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2232 transitions. [2023-08-30 09:59:52,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 159.42857142857142) internal successors, (2232), 14 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:52,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 315.0) internal successors, (4725), 15 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:52,734 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 315.0) internal successors, (4725), 15 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:52,734 INFO L175 Difference]: Start difference. First operand has 125 places, 141 transitions, 1543 flow. Second operand 14 states and 2232 transitions. [2023-08-30 09:59:52,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 348 transitions, 2751 flow [2023-08-30 09:59:52,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 348 transitions, 2510 flow, removed 18 selfloop flow, removed 14 redundant places. [2023-08-30 09:59:52,972 INFO L231 Difference]: Finished difference. Result has 124 places, 134 transitions, 1295 flow [2023-08-30 09:59:52,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1295, PETRI_PLACES=124, PETRI_TRANSITIONS=134} [2023-08-30 09:59:52,972 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 67 predicate places. [2023-08-30 09:59:52,972 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 134 transitions, 1295 flow [2023-08-30 09:59:52,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.28571428571428) internal successors, (989), 7 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:52,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:52,973 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:52,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 09:59:52,973 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:52,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1701893477, now seen corresponding path program 1 times [2023-08-30 09:59:52,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:52,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483958594] [2023-08-30 09:59:52,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:52,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483958594] [2023-08-30 09:59:53,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483958594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:53,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:53,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:59:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174567269] [2023-08-30 09:59:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:59:53,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:59:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:59:53,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 315 [2023-08-30 09:59:53,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 134 transitions, 1295 flow. Second operand has 7 states, 7 states have (on average 141.28571428571428) internal successors, (989), 7 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:53,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:53,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 315 [2023-08-30 09:59:53,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:54,394 INFO L130 PetriNetUnfolder]: 8698/14068 cut-off events. [2023-08-30 09:59:54,395 INFO L131 PetriNetUnfolder]: For 40944/40944 co-relation queries the response was YES. [2023-08-30 09:59:54,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50816 conditions, 14068 events. 8698/14068 cut-off events. For 40944/40944 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 94737 event pairs, 1728 based on Foata normal form. 90/13079 useless extension candidates. Maximal degree in co-relation 50667. Up to 9005 conditions per place. [2023-08-30 09:59:54,473 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 251 selfloop transitions, 48 changer transitions 5/309 dead transitions. [2023-08-30 09:59:54,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 309 transitions, 2674 flow [2023-08-30 09:59:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:59:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:59:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1468 transitions. [2023-08-30 09:59:54,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178130511463844 [2023-08-30 09:59:54,475 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1468 transitions. [2023-08-30 09:59:54,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1468 transitions. [2023-08-30 09:59:54,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:54,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1468 transitions. [2023-08-30 09:59:54,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.11111111111111) internal successors, (1468), 9 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 09:59:54,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 315.0) internal successors, (3150), 10 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:54,479 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 315.0) internal successors, (3150), 10 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:54,480 INFO L175 Difference]: Start difference. First operand has 124 places, 134 transitions, 1295 flow. Second operand 9 states and 1468 transitions. [2023-08-30 09:59:54,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 309 transitions, 2674 flow [2023-08-30 09:59:54,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 309 transitions, 2625 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 09:59:54,699 INFO L231 Difference]: Finished difference. Result has 129 places, 154 transitions, 1648 flow [2023-08-30 09:59:54,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1648, PETRI_PLACES=129, PETRI_TRANSITIONS=154} [2023-08-30 09:59:54,700 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 72 predicate places. [2023-08-30 09:59:54,700 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 154 transitions, 1648 flow [2023-08-30 09:59:54,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.28571428571428) internal successors, (989), 7 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:54,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:54,701 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:54,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 09:59:54,701 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:54,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:54,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1701893418, now seen corresponding path program 1 times [2023-08-30 09:59:54,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:54,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406712345] [2023-08-30 09:59:54,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:54,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:54,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:54,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406712345] [2023-08-30 09:59:54,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406712345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:54,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:54,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:59:54,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718198232] [2023-08-30 09:59:54,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:54,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:59:54,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:54,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:59:54,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:59:54,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 315 [2023-08-30 09:59:54,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 154 transitions, 1648 flow. Second operand has 7 states, 7 states have (on average 141.28571428571428) internal successors, (989), 7 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:54,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:54,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 315 [2023-08-30 09:59:54,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:55,963 INFO L130 PetriNetUnfolder]: 8569/13898 cut-off events. [2023-08-30 09:59:55,964 INFO L131 PetriNetUnfolder]: For 46769/46769 co-relation queries the response was YES. [2023-08-30 09:59:56,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52421 conditions, 13898 events. 8569/13898 cut-off events. For 46769/46769 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 93757 event pairs, 1744 based on Foata normal form. 90/12918 useless extension candidates. Maximal degree in co-relation 52271. Up to 8732 conditions per place. [2023-08-30 09:59:56,043 INFO L137 encePairwiseOnDemand]: 304/315 looper letters, 257 selfloop transitions, 48 changer transitions 3/313 dead transitions. [2023-08-30 09:59:56,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 313 transitions, 2733 flow [2023-08-30 09:59:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:59:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:59:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1616 transitions. [2023-08-30 09:59:56,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513015873015873 [2023-08-30 09:59:56,045 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1616 transitions. [2023-08-30 09:59:56,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1616 transitions. [2023-08-30 09:59:56,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:56,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1616 transitions. [2023-08-30 09:59:56,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.6) internal successors, (1616), 10 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:56,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:56,050 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:56,050 INFO L175 Difference]: Start difference. First operand has 129 places, 154 transitions, 1648 flow. Second operand 10 states and 1616 transitions. [2023-08-30 09:59:56,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 313 transitions, 2733 flow [2023-08-30 09:59:56,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 313 transitions, 2681 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-30 09:59:56,313 INFO L231 Difference]: Finished difference. Result has 133 places, 150 transitions, 1624 flow [2023-08-30 09:59:56,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1624, PETRI_PLACES=133, PETRI_TRANSITIONS=150} [2023-08-30 09:59:56,314 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 76 predicate places. [2023-08-30 09:59:56,314 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 150 transitions, 1624 flow [2023-08-30 09:59:56,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.28571428571428) internal successors, (989), 7 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:56,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:56,314 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 09:59:56,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 09:59:56,315 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:56,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1521815862, now seen corresponding path program 1 times [2023-08-30 09:59:56,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:56,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231682871] [2023-08-30 09:59:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:56,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:56,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:56,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231682871] [2023-08-30 09:59:56,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231682871] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:59:56,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424714365] [2023-08-30 09:59:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:56,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:56,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:59:56,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:59:56,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 09:59:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:56,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:59:56,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:59:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:56,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:59:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:56,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424714365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:59:56,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:59:56,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-08-30 09:59:56,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610074465] [2023-08-30 09:59:56,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:59:56,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:59:56,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:56,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:59:56,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:59:56,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 315 [2023-08-30 09:59:56,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 150 transitions, 1624 flow. Second operand has 8 states, 8 states have (on average 144.125) internal successors, (1153), 8 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:56,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:56,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 315 [2023-08-30 09:59:56,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:56,743 INFO L130 PetriNetUnfolder]: 1644/3207 cut-off events. [2023-08-30 09:59:56,744 INFO L131 PetriNetUnfolder]: For 15739/15739 co-relation queries the response was YES. [2023-08-30 09:59:56,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13290 conditions, 3207 events. 1644/3207 cut-off events. For 15739/15739 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 22008 event pairs, 118 based on Foata normal form. 387/3593 useless extension candidates. Maximal degree in co-relation 11994. Up to 2078 conditions per place. [2023-08-30 09:59:56,757 INFO L137 encePairwiseOnDemand]: 311/315 looper letters, 161 selfloop transitions, 3 changer transitions 96/264 dead transitions. [2023-08-30 09:59:56,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 264 transitions, 3636 flow [2023-08-30 09:59:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:59:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:59:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 770 transitions. [2023-08-30 09:59:56,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2023-08-30 09:59:56,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 770 transitions. [2023-08-30 09:59:56,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 770 transitions. [2023-08-30 09:59:56,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:56,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 770 transitions. [2023-08-30 09:59:56,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:56,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:56,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 315.0) internal successors, (1890), 6 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:56,761 INFO L175 Difference]: Start difference. First operand has 133 places, 150 transitions, 1624 flow. Second operand 5 states and 770 transitions. [2023-08-30 09:59:56,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 264 transitions, 3636 flow [2023-08-30 09:59:56,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 264 transitions, 3382 flow, removed 27 selfloop flow, removed 9 redundant places. [2023-08-30 09:59:56,781 INFO L231 Difference]: Finished difference. Result has 115 places, 84 transitions, 828 flow [2023-08-30 09:59:56,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=828, PETRI_PLACES=115, PETRI_TRANSITIONS=84} [2023-08-30 09:59:56,782 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 58 predicate places. [2023-08-30 09:59:56,782 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 84 transitions, 828 flow [2023-08-30 09:59:56,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.125) internal successors, (1153), 8 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:56,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:56,783 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 09:59:56,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 09:59:56,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 09:59:56,987 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:56,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash -736275363, now seen corresponding path program 1 times [2023-08-30 09:59:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:56,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112941466] [2023-08-30 09:59:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:56,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112941466] [2023-08-30 09:59:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112941466] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:59:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167320833] [2023-08-30 09:59:57,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:57,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:57,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:59:57,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:59:57,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 09:59:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:57,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:59:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:59:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:59:57,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:59:57,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167320833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:57,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:59:57,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-08-30 09:59:57,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397554807] [2023-08-30 09:59:57,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:57,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:59:57,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:59:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 09:59:57,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 315 [2023-08-30 09:59:57,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 84 transitions, 828 flow. Second operand has 8 states, 8 states have (on average 137.625) internal successors, (1101), 8 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:57,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:57,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 315 [2023-08-30 09:59:57,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:57,462 INFO L130 PetriNetUnfolder]: 1005/1781 cut-off events. [2023-08-30 09:59:57,462 INFO L131 PetriNetUnfolder]: For 6745/6745 co-relation queries the response was YES. [2023-08-30 09:59:57,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7325 conditions, 1781 events. 1005/1781 cut-off events. For 6745/6745 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9936 event pairs, 208 based on Foata normal form. 9/1789 useless extension candidates. Maximal degree in co-relation 7165. Up to 1096 conditions per place. [2023-08-30 09:59:57,469 INFO L137 encePairwiseOnDemand]: 303/315 looper letters, 107 selfloop transitions, 32 changer transitions 7/150 dead transitions. [2023-08-30 09:59:57,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 150 transitions, 1398 flow [2023-08-30 09:59:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:59:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:59:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1738 transitions. [2023-08-30 09:59:57,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4597883597883598 [2023-08-30 09:59:57,471 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1738 transitions. [2023-08-30 09:59:57,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1738 transitions. [2023-08-30 09:59:57,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:57,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1738 transitions. [2023-08-30 09:59:57,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:57,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:57,476 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:57,476 INFO L175 Difference]: Start difference. First operand has 115 places, 84 transitions, 828 flow. Second operand 12 states and 1738 transitions. [2023-08-30 09:59:57,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 150 transitions, 1398 flow [2023-08-30 09:59:57,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 150 transitions, 1339 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-08-30 09:59:57,492 INFO L231 Difference]: Finished difference. Result has 117 places, 83 transitions, 867 flow [2023-08-30 09:59:57,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=867, PETRI_PLACES=117, PETRI_TRANSITIONS=83} [2023-08-30 09:59:57,493 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 60 predicate places. [2023-08-30 09:59:57,493 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 83 transitions, 867 flow [2023-08-30 09:59:57,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.625) internal successors, (1101), 8 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:57,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:57,493 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 09:59:57,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 09:59:57,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:57,702 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:57,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash 807991715, now seen corresponding path program 2 times [2023-08-30 09:59:57,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:57,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423591547] [2023-08-30 09:59:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:57,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:57,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:57,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423591547] [2023-08-30 09:59:57,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423591547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:57,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:57,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:59:57,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873320361] [2023-08-30 09:59:57,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:57,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:59:57,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:57,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:59:57,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:59:57,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 315 [2023-08-30 09:59:57,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 83 transitions, 867 flow. Second operand has 7 states, 7 states have (on average 141.85714285714286) internal successors, (993), 7 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:57,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:57,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 315 [2023-08-30 09:59:57,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:58,008 INFO L130 PetriNetUnfolder]: 948/1693 cut-off events. [2023-08-30 09:59:58,008 INFO L131 PetriNetUnfolder]: For 6475/6475 co-relation queries the response was YES. [2023-08-30 09:59:58,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6962 conditions, 1693 events. 948/1693 cut-off events. For 6475/6475 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9447 event pairs, 214 based on Foata normal form. 9/1701 useless extension candidates. Maximal degree in co-relation 6811. Up to 1186 conditions per place. [2023-08-30 09:59:58,014 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 87 selfloop transitions, 14 changer transitions 15/120 dead transitions. [2023-08-30 09:59:58,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 1213 flow [2023-08-30 09:59:58,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 09:59:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 09:59:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1194 transitions. [2023-08-30 09:59:58,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738095238095238 [2023-08-30 09:59:58,016 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1194 transitions. [2023-08-30 09:59:58,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1194 transitions. [2023-08-30 09:59:58,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:58,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1194 transitions. [2023-08-30 09:59:58,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.25) internal successors, (1194), 8 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:58,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:58,019 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:58,019 INFO L175 Difference]: Start difference. First operand has 117 places, 83 transitions, 867 flow. Second operand 8 states and 1194 transitions. [2023-08-30 09:59:58,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 1213 flow [2023-08-30 09:59:58,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 120 transitions, 1138 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-30 09:59:58,034 INFO L231 Difference]: Finished difference. Result has 112 places, 77 transitions, 729 flow [2023-08-30 09:59:58,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=729, PETRI_PLACES=112, PETRI_TRANSITIONS=77} [2023-08-30 09:59:58,034 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 55 predicate places. [2023-08-30 09:59:58,034 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 77 transitions, 729 flow [2023-08-30 09:59:58,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.85714285714286) internal successors, (993), 7 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:58,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:58,035 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:59:58,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 09:59:58,035 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:58,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:58,035 INFO L85 PathProgramCache]: Analyzing trace with hash -332640989, now seen corresponding path program 3 times [2023-08-30 09:59:58,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:58,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986494701] [2023-08-30 09:59:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:58,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:59:58,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:58,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986494701] [2023-08-30 09:59:58,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986494701] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:59:58,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754336129] [2023-08-30 09:59:58,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:59:58,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:58,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:59:58,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:59:58,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 09:59:58,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 09:59:58,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:59:58,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:59:58,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:59:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:59:58,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:59:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:59:58,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754336129] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:59:58,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:59:58,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-08-30 09:59:58,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290496757] [2023-08-30 09:59:58,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:59:58,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 09:59:58,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 09:59:58,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-30 09:59:58,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 315 [2023-08-30 09:59:58,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 77 transitions, 729 flow. Second operand has 14 states, 14 states have (on average 137.64285714285714) internal successors, (1927), 14 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:58,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:58,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 315 [2023-08-30 09:59:58,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:58,695 INFO L130 PetriNetUnfolder]: 788/1405 cut-off events. [2023-08-30 09:59:58,695 INFO L131 PetriNetUnfolder]: For 4991/4991 co-relation queries the response was YES. [2023-08-30 09:59:58,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5644 conditions, 1405 events. 788/1405 cut-off events. For 4991/4991 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7445 event pairs, 109 based on Foata normal form. 18/1422 useless extension candidates. Maximal degree in co-relation 5499. Up to 423 conditions per place. [2023-08-30 09:59:58,700 INFO L137 encePairwiseOnDemand]: 304/315 looper letters, 101 selfloop transitions, 32 changer transitions 21/158 dead transitions. [2023-08-30 09:59:58,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 158 transitions, 1332 flow [2023-08-30 09:59:58,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 09:59:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 09:59:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2545 transitions. [2023-08-30 09:59:58,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488536155202822 [2023-08-30 09:59:58,703 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2545 transitions. [2023-08-30 09:59:58,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2545 transitions. [2023-08-30 09:59:58,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:58,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2545 transitions. [2023-08-30 09:59:58,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 141.38888888888889) internal successors, (2545), 18 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:58,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:58,709 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:58,709 INFO L175 Difference]: Start difference. First operand has 112 places, 77 transitions, 729 flow. Second operand 18 states and 2545 transitions. [2023-08-30 09:59:58,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 158 transitions, 1332 flow [2023-08-30 09:59:58,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 158 transitions, 1271 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-30 09:59:58,719 INFO L231 Difference]: Finished difference. Result has 118 places, 66 transitions, 604 flow [2023-08-30 09:59:58,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=604, PETRI_PLACES=118, PETRI_TRANSITIONS=66} [2023-08-30 09:59:58,720 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 61 predicate places. [2023-08-30 09:59:58,720 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 66 transitions, 604 flow [2023-08-30 09:59:58,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 137.64285714285714) internal successors, (1927), 14 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:58,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:58,720 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 09:59:58,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 09:59:58,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:58,921 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:58,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:58,921 INFO L85 PathProgramCache]: Analyzing trace with hash -340538678, now seen corresponding path program 1 times [2023-08-30 09:59:58,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:58,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587709800] [2023-08-30 09:59:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:58,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:58,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:58,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587709800] [2023-08-30 09:59:58,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587709800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:58,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:58,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:59:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393947327] [2023-08-30 09:59:58,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:58,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:59:58,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:59:58,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:59:59,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 315 [2023-08-30 09:59:59,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 66 transitions, 604 flow. Second operand has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:59,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 315 [2023-08-30 09:59:59,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:59,254 INFO L130 PetriNetUnfolder]: 709/1275 cut-off events. [2023-08-30 09:59:59,254 INFO L131 PetriNetUnfolder]: For 3892/3892 co-relation queries the response was YES. [2023-08-30 09:59:59,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5046 conditions, 1275 events. 709/1275 cut-off events. For 3892/3892 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6698 event pairs, 88 based on Foata normal form. 9/1283 useless extension candidates. Maximal degree in co-relation 4901. Up to 427 conditions per place. [2023-08-30 09:59:59,259 INFO L137 encePairwiseOnDemand]: 304/315 looper letters, 81 selfloop transitions, 21 changer transitions 30/136 dead transitions. [2023-08-30 09:59:59,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 136 transitions, 1125 flow [2023-08-30 09:59:59,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:59:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:59:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1868 transitions. [2023-08-30 09:59:59,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616605616605616 [2023-08-30 09:59:59,260 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1868 transitions. [2023-08-30 09:59:59,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1868 transitions. [2023-08-30 09:59:59,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:59,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1868 transitions. [2023-08-30 09:59:59,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 143.69230769230768) internal successors, (1868), 13 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 315.0) internal successors, (4410), 14 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,265 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 315.0) internal successors, (4410), 14 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,265 INFO L175 Difference]: Start difference. First operand has 118 places, 66 transitions, 604 flow. Second operand 13 states and 1868 transitions. [2023-08-30 09:59:59,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 136 transitions, 1125 flow [2023-08-30 09:59:59,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 993 flow, removed 4 selfloop flow, removed 25 redundant places. [2023-08-30 09:59:59,272 INFO L231 Difference]: Finished difference. Result has 100 places, 59 transitions, 475 flow [2023-08-30 09:59:59,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=475, PETRI_PLACES=100, PETRI_TRANSITIONS=59} [2023-08-30 09:59:59,273 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 43 predicate places. [2023-08-30 09:59:59,273 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 59 transitions, 475 flow [2023-08-30 09:59:59,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:59,273 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 09:59:59,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 09:59:59,273 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:59,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1216905835, now seen corresponding path program 1 times [2023-08-30 09:59:59,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:59,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688222365] [2023-08-30 09:59:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:59,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:59,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:59,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688222365] [2023-08-30 09:59:59,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688222365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:59,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:59,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:59:59,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314700781] [2023-08-30 09:59:59,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:59,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:59:59,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:59:59,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:59:59,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 315 [2023-08-30 09:59:59,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 59 transitions, 475 flow. Second operand has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:59,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 315 [2023-08-30 09:59:59,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:59,581 INFO L130 PetriNetUnfolder]: 555/995 cut-off events. [2023-08-30 09:59:59,581 INFO L131 PetriNetUnfolder]: For 3289/3289 co-relation queries the response was YES. [2023-08-30 09:59:59,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3781 conditions, 995 events. 555/995 cut-off events. For 3289/3289 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4820 event pairs, 115 based on Foata normal form. 9/1003 useless extension candidates. Maximal degree in co-relation 3684. Up to 457 conditions per place. [2023-08-30 09:59:59,584 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 92 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2023-08-30 09:59:59,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 121 transitions, 955 flow [2023-08-30 09:59:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:59:59,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:59:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1857 transitions. [2023-08-30 09:59:59,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534798534798535 [2023-08-30 09:59:59,585 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1857 transitions. [2023-08-30 09:59:59,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1857 transitions. [2023-08-30 09:59:59,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:59,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1857 transitions. [2023-08-30 09:59:59,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 142.84615384615384) internal successors, (1857), 13 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 315.0) internal successors, (4410), 14 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,589 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 315.0) internal successors, (4410), 14 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,589 INFO L175 Difference]: Start difference. First operand has 100 places, 59 transitions, 475 flow. Second operand 13 states and 1857 transitions. [2023-08-30 09:59:59,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 121 transitions, 955 flow [2023-08-30 09:59:59,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 121 transitions, 904 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-08-30 09:59:59,596 INFO L231 Difference]: Finished difference. Result has 95 places, 61 transitions, 508 flow [2023-08-30 09:59:59,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=508, PETRI_PLACES=95, PETRI_TRANSITIONS=61} [2023-08-30 09:59:59,596 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2023-08-30 09:59:59,596 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 61 transitions, 508 flow [2023-08-30 09:59:59,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:59,597 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 09:59:59,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 09:59:59,597 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:59,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash -55022636, now seen corresponding path program 1 times [2023-08-30 09:59:59,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:59,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910924286] [2023-08-30 09:59:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:59,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:59,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:59,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910924286] [2023-08-30 09:59:59,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910924286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:59,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:59,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:59:59,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714814637] [2023-08-30 09:59:59,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:59,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:59:59,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:59,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:59:59,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:59:59,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 315 [2023-08-30 09:59:59,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 61 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 141.85714285714286) internal successors, (993), 7 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:59,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 315 [2023-08-30 09:59:59,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:59,873 INFO L130 PetriNetUnfolder]: 579/1037 cut-off events. [2023-08-30 09:59:59,873 INFO L131 PetriNetUnfolder]: For 3484/3484 co-relation queries the response was YES. [2023-08-30 09:59:59,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3964 conditions, 1037 events. 579/1037 cut-off events. For 3484/3484 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5076 event pairs, 118 based on Foata normal form. 9/1045 useless extension candidates. Maximal degree in co-relation 3867. Up to 542 conditions per place. [2023-08-30 09:59:59,879 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 86 selfloop transitions, 22 changer transitions 0/112 dead transitions. [2023-08-30 09:59:59,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 112 transitions, 941 flow [2023-08-30 09:59:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 09:59:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 09:59:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1617 transitions. [2023-08-30 09:59:59,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-30 09:59:59,882 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1617 transitions. [2023-08-30 09:59:59,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1617 transitions. [2023-08-30 09:59:59,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:59,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1617 transitions. [2023-08-30 09:59:59,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 147.0) internal successors, (1617), 11 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 315.0) internal successors, (3780), 12 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,887 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 315.0) internal successors, (3780), 12 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,888 INFO L175 Difference]: Start difference. First operand has 95 places, 61 transitions, 508 flow. Second operand 11 states and 1617 transitions. [2023-08-30 09:59:59,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 112 transitions, 941 flow [2023-08-30 09:59:59,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 900 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 09:59:59,899 INFO L231 Difference]: Finished difference. Result has 101 places, 65 transitions, 580 flow [2023-08-30 09:59:59,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=580, PETRI_PLACES=101, PETRI_TRANSITIONS=65} [2023-08-30 09:59:59,900 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2023-08-30 09:59:59,900 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 65 transitions, 580 flow [2023-08-30 09:59:59,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.85714285714286) internal successors, (993), 7 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:59,900 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 09:59:59,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 09:59:59,901 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 09:59:59,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:59,901 INFO L85 PathProgramCache]: Analyzing trace with hash 170365287, now seen corresponding path program 2 times [2023-08-30 09:59:59,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:59,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926853167] [2023-08-30 09:59:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:59,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:59:59,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:59,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926853167] [2023-08-30 09:59:59,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926853167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:59,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:59,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:59:59,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216893750] [2023-08-30 09:59:59,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:59,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:59:59,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:59,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:59:59,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:00:00,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 315 [2023-08-30 10:00:00,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 65 transitions, 580 flow. Second operand has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:00,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 315 [2023-08-30 10:00:00,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:00,273 INFO L130 PetriNetUnfolder]: 570/1033 cut-off events. [2023-08-30 10:00:00,273 INFO L131 PetriNetUnfolder]: For 3918/3918 co-relation queries the response was YES. [2023-08-30 10:00:00,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4038 conditions, 1033 events. 570/1033 cut-off events. For 3918/3918 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5079 event pairs, 121 based on Foata normal form. 9/1041 useless extension candidates. Maximal degree in co-relation 3933. Up to 586 conditions per place. [2023-08-30 10:00:00,276 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 85 selfloop transitions, 19 changer transitions 0/108 dead transitions. [2023-08-30 10:00:00,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 108 transitions, 920 flow [2023-08-30 10:00:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:00:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:00:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1434 transitions. [2023-08-30 10:00:00,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552380952380952 [2023-08-30 10:00:00,278 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1434 transitions. [2023-08-30 10:00:00,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1434 transitions. [2023-08-30 10:00:00,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:00,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1434 transitions. [2023-08-30 10:00:00,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 143.4) internal successors, (1434), 10 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,281 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,281 INFO L175 Difference]: Start difference. First operand has 101 places, 65 transitions, 580 flow. Second operand 10 states and 1434 transitions. [2023-08-30 10:00:00,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 108 transitions, 920 flow [2023-08-30 10:00:00,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 906 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 10:00:00,289 INFO L231 Difference]: Finished difference. Result has 108 places, 65 transitions, 592 flow [2023-08-30 10:00:00,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=592, PETRI_PLACES=108, PETRI_TRANSITIONS=65} [2023-08-30 10:00:00,290 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2023-08-30 10:00:00,290 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 65 transitions, 592 flow [2023-08-30 10:00:00,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:00,290 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 10:00:00,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 10:00:00,291 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:00:00,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash 162004658, now seen corresponding path program 2 times [2023-08-30 10:00:00,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:00,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136676883] [2023-08-30 10:00:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:00,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:00:00,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:00,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136676883] [2023-08-30 10:00:00,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136676883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:00,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:00,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:00:00,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049044285] [2023-08-30 10:00:00,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:00,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:00:00,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:00,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:00:00,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:00:00,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 315 [2023-08-30 10:00:00,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 65 transitions, 592 flow. Second operand has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:00,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 315 [2023-08-30 10:00:00,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:00,588 INFO L130 PetriNetUnfolder]: 561/1019 cut-off events. [2023-08-30 10:00:00,589 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-30 10:00:00,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4048 conditions, 1019 events. 561/1019 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5060 event pairs, 55 based on Foata normal form. 9/1027 useless extension candidates. Maximal degree in co-relation 3942. Up to 264 conditions per place. [2023-08-30 10:00:00,592 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 88 selfloop transitions, 28 changer transitions 9/129 dead transitions. [2023-08-30 10:00:00,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 129 transitions, 1054 flow [2023-08-30 10:00:00,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:00:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:00:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1997 transitions. [2023-08-30 10:00:00,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528344671201814 [2023-08-30 10:00:00,594 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1997 transitions. [2023-08-30 10:00:00,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1997 transitions. [2023-08-30 10:00:00,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:00,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1997 transitions. [2023-08-30 10:00:00,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 142.64285714285714) internal successors, (1997), 14 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 315.0) internal successors, (4725), 15 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,598 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 315.0) internal successors, (4725), 15 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,599 INFO L175 Difference]: Start difference. First operand has 108 places, 65 transitions, 592 flow. Second operand 14 states and 1997 transitions. [2023-08-30 10:00:00,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 129 transitions, 1054 flow [2023-08-30 10:00:00,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 129 transitions, 978 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-08-30 10:00:00,607 INFO L231 Difference]: Finished difference. Result has 108 places, 55 transitions, 484 flow [2023-08-30 10:00:00,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=484, PETRI_PLACES=108, PETRI_TRANSITIONS=55} [2023-08-30 10:00:00,608 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2023-08-30 10:00:00,608 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 55 transitions, 484 flow [2023-08-30 10:00:00,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:00,608 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 10:00:00,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:00:00,608 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:00:00,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:00,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1216905906, now seen corresponding path program 3 times [2023-08-30 10:00:00,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:00,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494281617] [2023-08-30 10:00:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:00,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:00:00,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:00,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494281617] [2023-08-30 10:00:00,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494281617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:00,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:00,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:00:00,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816570238] [2023-08-30 10:00:00,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:00,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:00:00,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:00:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:00:00,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 315 [2023-08-30 10:00:00,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 55 transitions, 484 flow. Second operand has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:00,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 315 [2023-08-30 10:00:00,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:00,915 INFO L130 PetriNetUnfolder]: 453/830 cut-off events. [2023-08-30 10:00:00,915 INFO L131 PetriNetUnfolder]: For 2659/2659 co-relation queries the response was YES. [2023-08-30 10:00:00,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3308 conditions, 830 events. 453/830 cut-off events. For 2659/2659 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3908 event pairs, 70 based on Foata normal form. 9/838 useless extension candidates. Maximal degree in co-relation 3206. Up to 318 conditions per place. [2023-08-30 10:00:00,917 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 64 selfloop transitions, 19 changer transitions 30/117 dead transitions. [2023-08-30 10:00:00,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 117 transitions, 934 flow [2023-08-30 10:00:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:00:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:00:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2265 transitions. [2023-08-30 10:00:00,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2023-08-30 10:00:00,919 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2265 transitions. [2023-08-30 10:00:00,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2265 transitions. [2023-08-30 10:00:00,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:00,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2265 transitions. [2023-08-30 10:00:00,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 141.5625) internal successors, (2265), 16 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 315.0) internal successors, (5355), 17 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,924 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 315.0) internal successors, (5355), 17 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,924 INFO L175 Difference]: Start difference. First operand has 108 places, 55 transitions, 484 flow. Second operand 16 states and 2265 transitions. [2023-08-30 10:00:00,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 117 transitions, 934 flow [2023-08-30 10:00:00,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 117 transitions, 786 flow, removed 7 selfloop flow, removed 24 redundant places. [2023-08-30 10:00:00,929 INFO L231 Difference]: Finished difference. Result has 90 places, 41 transitions, 268 flow [2023-08-30 10:00:00,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=268, PETRI_PLACES=90, PETRI_TRANSITIONS=41} [2023-08-30 10:00:00,929 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2023-08-30 10:00:00,929 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 41 transitions, 268 flow [2023-08-30 10:00:00,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:00,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:00,930 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 10:00:00,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 10:00:00,930 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:00:00,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:00,930 INFO L85 PathProgramCache]: Analyzing trace with hash -63383407, now seen corresponding path program 3 times [2023-08-30 10:00:00,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:00,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369691082] [2023-08-30 10:00:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:00,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:00,992 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 10:00:00,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:00,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369691082] [2023-08-30 10:00:00,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369691082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:00,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:00,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:00:00,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918166705] [2023-08-30 10:00:00,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:00,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:00:00,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:00,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:00:00,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:00:01,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 315 [2023-08-30 10:00:01,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 41 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 141.85714285714286) internal successors, (993), 7 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:01,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:01,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 315 [2023-08-30 10:00:01,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:01,175 INFO L130 PetriNetUnfolder]: 300/560 cut-off events. [2023-08-30 10:00:01,176 INFO L131 PetriNetUnfolder]: For 924/924 co-relation queries the response was YES. [2023-08-30 10:00:01,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1929 conditions, 560 events. 300/560 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2351 event pairs, 76 based on Foata normal form. 9/568 useless extension candidates. Maximal degree in co-relation 1870. Up to 253 conditions per place. [2023-08-30 10:00:01,177 INFO L137 encePairwiseOnDemand]: 307/315 looper letters, 26 selfloop transitions, 2 changer transitions 45/77 dead transitions. [2023-08-30 10:00:01,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 540 flow [2023-08-30 10:00:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:00:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:00:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1599 transitions. [2023-08-30 10:00:01,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614718614718615 [2023-08-30 10:00:01,184 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1599 transitions. [2023-08-30 10:00:01,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1599 transitions. [2023-08-30 10:00:01,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:01,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1599 transitions. [2023-08-30 10:00:01,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 145.36363636363637) internal successors, (1599), 11 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:01,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 315.0) internal successors, (3780), 12 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:01,191 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 315.0) internal successors, (3780), 12 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:01,191 INFO L175 Difference]: Start difference. First operand has 90 places, 41 transitions, 268 flow. Second operand 11 states and 1599 transitions. [2023-08-30 10:00:01,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 540 flow [2023-08-30 10:00:01,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 77 transitions, 444 flow, removed 0 selfloop flow, removed 24 redundant places. [2023-08-30 10:00:01,193 INFO L231 Difference]: Finished difference. Result has 66 places, 28 transitions, 114 flow [2023-08-30 10:00:01,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=114, PETRI_PLACES=66, PETRI_TRANSITIONS=28} [2023-08-30 10:00:01,194 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2023-08-30 10:00:01,194 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 28 transitions, 114 flow [2023-08-30 10:00:01,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.85714285714286) internal successors, (993), 7 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:01,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:01,194 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 10:00:01,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 10:00:01,194 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:00:01,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:01,195 INFO L85 PathProgramCache]: Analyzing trace with hash 351806763, now seen corresponding path program 4 times [2023-08-30 10:00:01,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:01,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937784545] [2023-08-30 10:00:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:01,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:00:01,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:01,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937784545] [2023-08-30 10:00:01,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937784545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:01,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:01,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:00:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441649653] [2023-08-30 10:00:01,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:01,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:00:01,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:00:01,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:00:01,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 315 [2023-08-30 10:00:01,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 28 transitions, 114 flow. Second operand has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:01,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:01,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 315 [2023-08-30 10:00:01,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:01,424 INFO L130 PetriNetUnfolder]: 178/342 cut-off events. [2023-08-30 10:00:01,425 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-08-30 10:00:01,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 342 events. 178/342 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1253 event pairs, 34 based on Foata normal form. 9/350 useless extension candidates. Maximal degree in co-relation 897. Up to 105 conditions per place. [2023-08-30 10:00:01,425 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-08-30 10:00:01,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 292 flow [2023-08-30 10:00:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:00:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:00:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1263 transitions. [2023-08-30 10:00:01,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4455026455026455 [2023-08-30 10:00:01,426 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1263 transitions. [2023-08-30 10:00:01,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1263 transitions. [2023-08-30 10:00:01,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:01,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1263 transitions. [2023-08-30 10:00:01,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.33333333333334) internal successors, (1263), 9 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:01,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 315.0) internal successors, (3150), 10 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:01,429 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 315.0) internal successors, (3150), 10 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:01,429 INFO L175 Difference]: Start difference. First operand has 66 places, 28 transitions, 114 flow. Second operand 9 states and 1263 transitions. [2023-08-30 10:00:01,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 292 flow [2023-08-30 10:00:01,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 275 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-30 10:00:01,430 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-30 10:00:01,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-30 10:00:01,431 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -10 predicate places. [2023-08-30 10:00:01,431 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-30 10:00:01,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:01,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 10:00:01,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 10:00:01,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 10:00:01,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 10:00:01,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 10:00:01,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 10:00:01,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 10:00:01,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 10:00:01,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 10:00:01,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 10:00:01,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 10:00:01,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 10:00:01,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 10:00:01,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 10:00:01,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 10:00:01,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 10:00:01,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 10:00:01,433 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:00:01,434 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:00:01,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 174 transitions, 366 flow [2023-08-30 10:00:01,450 INFO L130 PetriNetUnfolder]: 40/292 cut-off events. [2023-08-30 10:00:01,450 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:00:01,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 40/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 844 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 179. Up to 9 conditions per place. [2023-08-30 10:00:01,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 174 transitions, 366 flow [2023-08-30 10:00:01,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 174 transitions, 366 flow [2023-08-30 10:00:01,452 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:00:01,452 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 174 transitions, 366 flow [2023-08-30 10:00:01,452 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 174 transitions, 366 flow [2023-08-30 10:00:01,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 174 transitions, 366 flow [2023-08-30 10:00:01,466 INFO L130 PetriNetUnfolder]: 40/292 cut-off events. [2023-08-30 10:00:01,466 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:00:01,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 40/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 844 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 179. Up to 9 conditions per place. [2023-08-30 10:00:01,471 INFO L119 LiptonReduction]: Number of co-enabled transitions 11304 [2023-08-30 10:00:03,853 INFO L134 LiptonReduction]: Checked pairs total: 27179 [2023-08-30 10:00:03,853 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-30 10:00:03,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:00:03,854 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;@68e92f8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:00:03,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:00:03,859 INFO L130 PetriNetUnfolder]: 15/70 cut-off events. [2023-08-30 10:00:03,859 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:00:03,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:03,859 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 10:00:03,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:00:03,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:03,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2059242729, now seen corresponding path program 1 times [2023-08-30 10:00:03,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:03,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804305596] [2023-08-30 10:00:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:03,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:00:03,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:00:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:00:03,877 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:00:03,878 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:00:03,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:00:03,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 10:00:03,878 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:00:03,878 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:00:03,878 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:00:03,878 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 10:00:03,891 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:00:03,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 212 transitions, 454 flow [2023-08-30 10:00:03,928 INFO L130 PetriNetUnfolder]: 62/446 cut-off events. [2023-08-30 10:00:03,929 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:00:03,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 446 events. 62/446 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1493 event pairs, 1 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-30 10:00:03,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 212 transitions, 454 flow [2023-08-30 10:00:03,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 212 transitions, 454 flow [2023-08-30 10:00:03,933 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:00:03,934 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 212 transitions, 454 flow [2023-08-30 10:00:03,934 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 212 transitions, 454 flow [2023-08-30 10:00:03,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 212 transitions, 454 flow [2023-08-30 10:00:03,970 INFO L130 PetriNetUnfolder]: 62/446 cut-off events. [2023-08-30 10:00:03,970 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:00:03,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 446 events. 62/446 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1493 event pairs, 1 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-30 10:00:03,986 INFO L119 LiptonReduction]: Number of co-enabled transitions 21168 [2023-08-30 10:00:06,561 INFO L134 LiptonReduction]: Checked pairs total: 52810 [2023-08-30 10:00:06,561 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-08-30 10:00:06,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:00:06,568 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;@68e92f8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:00:06,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:00:06,570 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 10:00:06,570 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:00:06,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:06,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:00:06,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:00:06,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:06,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1483413586, now seen corresponding path program 1 times [2023-08-30 10:00:06,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:06,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686525157] [2023-08-30 10:00:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:06,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:00:06,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:06,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686525157] [2023-08-30 10:00:06,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686525157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:06,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:06,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:00:06,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832275400] [2023-08-30 10:00:06,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:06,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:00:06,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:06,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:00:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:00:06,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 377 [2023-08-30 10:00:06,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 93 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:06,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:06,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 377 [2023-08-30 10:00:06,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:13,635 INFO L130 PetriNetUnfolder]: 117789/166249 cut-off events. [2023-08-30 10:00:13,635 INFO L131 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2023-08-30 10:00:13,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330051 conditions, 166249 events. 117789/166249 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 5248. Compared 1265106 event pairs, 74471 based on Foata normal form. 18507/131617 useless extension candidates. Maximal degree in co-relation 21768. Up to 162055 conditions per place. [2023-08-30 10:00:14,247 INFO L137 encePairwiseOnDemand]: 350/377 looper letters, 77 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 10:00:14,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 364 flow [2023-08-30 10:00:14,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:00:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:00:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-08-30 10:00:14,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694076038903625 [2023-08-30 10:00:14,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-08-30 10:00:14,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-08-30 10:00:14,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:14,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-08-30 10:00:14,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:14,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:14,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:14,251 INFO L175 Difference]: Start difference. First operand has 75 places, 93 transitions, 216 flow. Second operand 3 states and 644 transitions. [2023-08-30 10:00:14,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 364 flow [2023-08-30 10:00:14,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:00:14,253 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 192 flow [2023-08-30 10:00:14,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-08-30 10:00:14,253 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2023-08-30 10:00:14,254 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 192 flow [2023-08-30 10:00:14,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:14,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:14,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:00:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 10:00:14,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:00:14,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash -359212146, now seen corresponding path program 1 times [2023-08-30 10:00:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985332752] [2023-08-30 10:00:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:14,282 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 10:00:14,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:14,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985332752] [2023-08-30 10:00:14,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985332752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:14,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:14,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:00:14,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835375708] [2023-08-30 10:00:14,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:14,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:00:14,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:14,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:00:14,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:00:14,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 377 [2023-08-30 10:00:14,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:14,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:14,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 377 [2023-08-30 10:00:14,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:23,393 INFO L130 PetriNetUnfolder]: 135426/195120 cut-off events. [2023-08-30 10:00:23,393 INFO L131 PetriNetUnfolder]: For 10627/10627 co-relation queries the response was YES. [2023-08-30 10:00:23,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407406 conditions, 195120 events. 135426/195120 cut-off events. For 10627/10627 co-relation queries the response was YES. Maximal size of possible extension queue 6624. Compared 1570773 event pairs, 58624 based on Foata normal form. 0/139797 useless extension candidates. Maximal degree in co-relation 407306. Up to 136985 conditions per place. [2023-08-30 10:00:24,338 INFO L137 encePairwiseOnDemand]: 358/377 looper letters, 107 selfloop transitions, 13 changer transitions 0/129 dead transitions. [2023-08-30 10:00:24,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 129 transitions, 578 flow [2023-08-30 10:00:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:00:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:00:24,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-30 10:00:24,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5738284703801945 [2023-08-30 10:00:24,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-30 10:00:24,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-30 10:00:24,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:24,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-30 10:00:24,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:24,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:24,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:24,342 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 192 flow. Second operand 3 states and 649 transitions. [2023-08-30 10:00:24,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 129 transitions, 578 flow [2023-08-30 10:00:24,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 129 transitions, 575 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:00:24,359 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 302 flow [2023-08-30 10:00:24,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2023-08-30 10:00:24,359 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2023-08-30 10:00:24,360 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 302 flow [2023-08-30 10:00:24,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:24,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:24,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:00:24,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 10:00:24,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:00:24,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:24,361 INFO L85 PathProgramCache]: Analyzing trace with hash -359212227, now seen corresponding path program 1 times [2023-08-30 10:00:24,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:24,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214938855] [2023-08-30 10:00:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:24,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:24,379 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 10:00:24,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:24,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214938855] [2023-08-30 10:00:24,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214938855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:24,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:24,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:00:24,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837898830] [2023-08-30 10:00:24,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:24,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:00:24,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:24,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:00:24,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:00:24,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 377 [2023-08-30 10:00:24,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:24,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:24,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 377 [2023-08-30 10:00:24,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:34,790 INFO L130 PetriNetUnfolder]: 142597/208040 cut-off events. [2023-08-30 10:00:34,790 INFO L131 PetriNetUnfolder]: For 69393/69907 co-relation queries the response was YES. [2023-08-30 10:00:35,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512255 conditions, 208040 events. 142597/208040 cut-off events. For 69393/69907 co-relation queries the response was YES. Maximal size of possible extension queue 7504. Compared 1732622 event pairs, 51752 based on Foata normal form. 4663/189634 useless extension candidates. Maximal degree in co-relation 220919. Up to 156527 conditions per place. [2023-08-30 10:00:35,833 INFO L137 encePairwiseOnDemand]: 358/377 looper letters, 119 selfloop transitions, 16 changer transitions 0/144 dead transitions. [2023-08-30 10:00:35,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 144 transitions, 759 flow [2023-08-30 10:00:35,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:00:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:00:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-30 10:00:35,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5738284703801945 [2023-08-30 10:00:35,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-30 10:00:35,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-30 10:00:35,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:35,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-30 10:00:35,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:35,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:35,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:35,836 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 302 flow. Second operand 3 states and 649 transitions. [2023-08-30 10:00:35,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 144 transitions, 759 flow [2023-08-30 10:00:36,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 144 transitions, 727 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:00:36,575 INFO L231 Difference]: Finished difference. Result has 83 places, 100 transitions, 448 flow [2023-08-30 10:00:36,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=83, PETRI_TRANSITIONS=100} [2023-08-30 10:00:36,575 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2023-08-30 10:00:36,575 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 100 transitions, 448 flow [2023-08-30 10:00:36,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:36,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:36,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:00:36,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 10:00:36,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:00:36,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2028380414, now seen corresponding path program 1 times [2023-08-30 10:00:36,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:36,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734795057] [2023-08-30 10:00:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:36,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:00:36,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:36,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734795057] [2023-08-30 10:00:36,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734795057] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:00:36,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60225502] [2023-08-30 10:00:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:36,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:00:36,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:00:36,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:00:36,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:00:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:36,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:00:36,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:00:36,687 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 10:00:36,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:00:36,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60225502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:36,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:00:36,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 10:00:36,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047240721] [2023-08-30 10:00:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:36,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:00:36,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:00:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:00:36,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 377 [2023-08-30 10:00:36,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 100 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:36,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:36,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 377 [2023-08-30 10:00:36,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:47,112 INFO L130 PetriNetUnfolder]: 132982/195130 cut-off events. [2023-08-30 10:00:47,112 INFO L131 PetriNetUnfolder]: For 143795/144107 co-relation queries the response was YES. [2023-08-30 10:00:47,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527040 conditions, 195130 events. 132982/195130 cut-off events. For 143795/144107 co-relation queries the response was YES. Maximal size of possible extension queue 6831. Compared 1616790 event pairs, 84264 based on Foata normal form. 104/176094 useless extension candidates. Maximal degree in co-relation 188836. Up to 190924 conditions per place. [2023-08-30 10:00:48,148 INFO L137 encePairwiseOnDemand]: 374/377 looper letters, 101 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-30 10:00:48,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 112 transitions, 696 flow [2023-08-30 10:00:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:00:48,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:00:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 789 transitions. [2023-08-30 10:00:48,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523209549071618 [2023-08-30 10:00:48,149 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 789 transitions. [2023-08-30 10:00:48,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 789 transitions. [2023-08-30 10:00:48,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:48,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 789 transitions. [2023-08-30 10:00:48,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:48,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:48,152 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:48,152 INFO L175 Difference]: Start difference. First operand has 83 places, 100 transitions, 448 flow. Second operand 4 states and 789 transitions. [2023-08-30 10:00:48,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 112 transitions, 696 flow [2023-08-30 10:00:55,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 112 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:00:55,845 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 416 flow [2023-08-30 10:00:55,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=416, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2023-08-30 10:00:55,846 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2023-08-30 10:00:55,846 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 416 flow [2023-08-30 10:00:55,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:55,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:55,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:00:55,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 10:00:56,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-30 10:00:56,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:00:56,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:56,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2028380365, now seen corresponding path program 1 times [2023-08-30 10:00:56,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:56,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006776252] [2023-08-30 10:00:56,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:56,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:56,064 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 10:00:56,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:56,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006776252] [2023-08-30 10:00:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006776252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:56,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:56,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:00:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359895125] [2023-08-30 10:00:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:56,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:00:56,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:00:56,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:00:56,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 377 [2023-08-30 10:00:56,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:56,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:56,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 377 [2023-08-30 10:00:56,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:04,894 INFO L130 PetriNetUnfolder]: 123367/178915 cut-off events. [2023-08-30 10:01:04,894 INFO L131 PetriNetUnfolder]: For 98249/98297 co-relation queries the response was YES. [2023-08-30 10:01:05,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468271 conditions, 178915 events. 123367/178915 cut-off events. For 98249/98297 co-relation queries the response was YES. Maximal size of possible extension queue 6212. Compared 1491995 event pairs, 19862 based on Foata normal form. 16/151795 useless extension candidates. Maximal degree in co-relation 467562. Up to 153715 conditions per place. [2023-08-30 10:01:05,737 INFO L137 encePairwiseOnDemand]: 373/377 looper letters, 152 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2023-08-30 10:01:05,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 165 transitions, 1026 flow [2023-08-30 10:01:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:01:05,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:01:05,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2023-08-30 10:01:05,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5596816976127321 [2023-08-30 10:01:05,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 633 transitions. [2023-08-30 10:01:05,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 633 transitions. [2023-08-30 10:01:05,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:05,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 633 transitions. [2023-08-30 10:01:05,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:05,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:05,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:05,740 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 416 flow. Second operand 3 states and 633 transitions. [2023-08-30 10:01:05,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 165 transitions, 1026 flow [2023-08-30 10:01:05,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 165 transitions, 1023 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:01:05,748 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 425 flow [2023-08-30 10:01:05,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=425, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2023-08-30 10:01:05,749 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2023-08-30 10:01:05,750 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 425 flow [2023-08-30 10:01:05,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:05,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:05,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:05,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 10:01:05,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:01:05,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:05,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1010815690, now seen corresponding path program 1 times [2023-08-30 10:01:05,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:05,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324846391] [2023-08-30 10:01:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:05,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:05,783 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 10:01:05,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:05,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324846391] [2023-08-30 10:01:05,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324846391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:05,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:05,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:01:05,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373083331] [2023-08-30 10:01:05,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:05,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:01:05,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:05,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:01:05,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:01:05,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 377 [2023-08-30 10:01:05,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:05,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:05,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 377 [2023-08-30 10:01:05,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:17,558 INFO L130 PetriNetUnfolder]: 156047/224946 cut-off events. [2023-08-30 10:01:17,558 INFO L131 PetriNetUnfolder]: For 119986/120327 co-relation queries the response was YES. [2023-08-30 10:01:18,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602229 conditions, 224946 events. 156047/224946 cut-off events. For 119986/120327 co-relation queries the response was YES. Maximal size of possible extension queue 7669. Compared 1829272 event pairs, 36585 based on Foata normal form. 308/194631 useless extension candidates. Maximal degree in co-relation 602116. Up to 131163 conditions per place. [2023-08-30 10:01:18,676 INFO L137 encePairwiseOnDemand]: 357/377 looper letters, 266 selfloop transitions, 52 changer transitions 0/327 dead transitions. [2023-08-30 10:01:18,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 327 transitions, 1885 flow [2023-08-30 10:01:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:01:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:01:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1492 transitions. [2023-08-30 10:01:18,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653656688139447 [2023-08-30 10:01:18,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1492 transitions. [2023-08-30 10:01:18,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1492 transitions. [2023-08-30 10:01:18,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:18,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1492 transitions. [2023-08-30 10:01:18,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 213.14285714285714) internal successors, (1492), 7 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:18,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:18,680 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:18,680 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 425 flow. Second operand 7 states and 1492 transitions. [2023-08-30 10:01:18,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 327 transitions, 1885 flow [2023-08-30 10:01:18,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 327 transitions, 1867 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:01:18,727 INFO L231 Difference]: Finished difference. Result has 92 places, 135 transitions, 826 flow [2023-08-30 10:01:18,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=826, PETRI_PLACES=92, PETRI_TRANSITIONS=135} [2023-08-30 10:01:18,727 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 17 predicate places. [2023-08-30 10:01:18,727 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 135 transitions, 826 flow [2023-08-30 10:01:18,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:18,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:18,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:18,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 10:01:18,728 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:01:18,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1010815766, now seen corresponding path program 1 times [2023-08-30 10:01:18,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:18,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66017456] [2023-08-30 10:01:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:18,752 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 10:01:18,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:18,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66017456] [2023-08-30 10:01:18,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66017456] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:18,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:18,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:01:18,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352764804] [2023-08-30 10:01:18,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:18,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:01:18,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:18,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:01:18,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:01:18,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 377 [2023-08-30 10:01:18,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 135 transitions, 826 flow. Second operand has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:18,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:18,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 377 [2023-08-30 10:01:18,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:33,467 INFO L130 PetriNetUnfolder]: 159731/232128 cut-off events. [2023-08-30 10:01:33,468 INFO L131 PetriNetUnfolder]: For 377944/378419 co-relation queries the response was YES. [2023-08-30 10:01:34,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712222 conditions, 232128 events. 159731/232128 cut-off events. For 377944/378419 co-relation queries the response was YES. Maximal size of possible extension queue 8133. Compared 1923464 event pairs, 28073 based on Foata normal form. 5988/218845 useless extension candidates. Maximal degree in co-relation 712106. Up to 137990 conditions per place. [2023-08-30 10:01:34,963 INFO L137 encePairwiseOnDemand]: 356/377 looper letters, 288 selfloop transitions, 66 changer transitions 0/363 dead transitions. [2023-08-30 10:01:34,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 363 transitions, 2650 flow [2023-08-30 10:01:34,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:01:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:01:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1451 transitions. [2023-08-30 10:01:34,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5498294808639637 [2023-08-30 10:01:34,965 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1451 transitions. [2023-08-30 10:01:34,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1451 transitions. [2023-08-30 10:01:34,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:34,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1451 transitions. [2023-08-30 10:01:34,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.28571428571428) internal successors, (1451), 7 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:34,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:34,972 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:34,972 INFO L175 Difference]: Start difference. First operand has 92 places, 135 transitions, 826 flow. Second operand 7 states and 1451 transitions. [2023-08-30 10:01:34,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 363 transitions, 2650 flow [2023-08-30 10:01:38,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 363 transitions, 2560 flow, removed 45 selfloop flow, removed 0 redundant places. [2023-08-30 10:01:38,645 INFO L231 Difference]: Finished difference. Result has 104 places, 189 transitions, 1561 flow [2023-08-30 10:01:38,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1561, PETRI_PLACES=104, PETRI_TRANSITIONS=189} [2023-08-30 10:01:38,646 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 29 predicate places. [2023-08-30 10:01:38,646 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 189 transitions, 1561 flow [2023-08-30 10:01:38,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:38,646 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:01:38,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 10:01:38,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:01:38,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:38,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1486534523, now seen corresponding path program 1 times [2023-08-30 10:01:38,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:38,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651710991] [2023-08-30 10:01:38,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:38,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:38,677 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 10:01:38,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:38,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651710991] [2023-08-30 10:01:38,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651710991] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:38,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:38,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:01:38,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422226517] [2023-08-30 10:01:38,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:38,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:01:38,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:38,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:01:38,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:01:38,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 377 [2023-08-30 10:01:38,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 189 transitions, 1561 flow. Second operand has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:38,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:38,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 377 [2023-08-30 10:01:38,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:58,081 INFO L130 PetriNetUnfolder]: 182425/265107 cut-off events. [2023-08-30 10:01:58,082 INFO L131 PetriNetUnfolder]: For 923666/924298 co-relation queries the response was YES. [2023-08-30 10:01:59,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947414 conditions, 265107 events. 182425/265107 cut-off events. For 923666/924298 co-relation queries the response was YES. Maximal size of possible extension queue 9073. Compared 2216596 event pairs, 46894 based on Foata normal form. 5076/254759 useless extension candidates. Maximal degree in co-relation 947284. Up to 173040 conditions per place. [2023-08-30 10:02:00,202 INFO L137 encePairwiseOnDemand]: 358/377 looper letters, 323 selfloop transitions, 93 changer transitions 0/425 dead transitions. [2023-08-30 10:02:00,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 425 transitions, 3777 flow [2023-08-30 10:02:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:02:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:02:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1278 transitions. [2023-08-30 10:02:00,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5649867374005305 [2023-08-30 10:02:00,204 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1278 transitions. [2023-08-30 10:02:00,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1278 transitions. [2023-08-30 10:02:00,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:00,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1278 transitions. [2023-08-30 10:02:00,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:00,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 377.0) internal successors, (2639), 7 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:00,206 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 377.0) internal successors, (2639), 7 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:00,206 INFO L175 Difference]: Start difference. First operand has 104 places, 189 transitions, 1561 flow. Second operand 6 states and 1278 transitions. [2023-08-30 10:02:00,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 425 transitions, 3777 flow [2023-08-30 10:02:10,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 425 transitions, 3777 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:02:10,908 INFO L231 Difference]: Finished difference. Result has 112 places, 235 transitions, 2388 flow [2023-08-30 10:02:10,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2388, PETRI_PLACES=112, PETRI_TRANSITIONS=235} [2023-08-30 10:02:10,909 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 37 predicate places. [2023-08-30 10:02:10,909 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 235 transitions, 2388 flow [2023-08-30 10:02:10,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:10,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:10,909 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:02:10,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 10:02:10,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:02:10,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:10,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1486534522, now seen corresponding path program 1 times [2023-08-30 10:02:10,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:10,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28932780] [2023-08-30 10:02:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:10,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:10,936 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 10:02:10,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:10,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28932780] [2023-08-30 10:02:10,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28932780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:10,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:02:10,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:02:10,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251693991] [2023-08-30 10:02:10,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:10,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:02:10,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:10,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:02:10,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:02:10,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 377 [2023-08-30 10:02:10,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 235 transitions, 2388 flow. Second operand has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:10,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:10,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 377 [2023-08-30 10:02:10,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:31,718 INFO L130 PetriNetUnfolder]: 179643/262343 cut-off events. [2023-08-30 10:02:31,718 INFO L131 PetriNetUnfolder]: For 1299329/1300048 co-relation queries the response was YES. [2023-08-30 10:02:32,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1000686 conditions, 262343 events. 179643/262343 cut-off events. For 1299329/1300048 co-relation queries the response was YES. Maximal size of possible extension queue 9327. Compared 2210709 event pairs, 41849 based on Foata normal form. 5676/252420 useless extension candidates. Maximal degree in co-relation 1000549. Up to 172513 conditions per place. [2023-08-30 10:02:33,993 INFO L137 encePairwiseOnDemand]: 357/377 looper letters, 366 selfloop transitions, 100 changer transitions 0/475 dead transitions. [2023-08-30 10:02:33,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 475 transitions, 4917 flow [2023-08-30 10:02:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:02:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:02:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1447 transitions. [2023-08-30 10:02:33,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483137552103069 [2023-08-30 10:02:33,995 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1447 transitions. [2023-08-30 10:02:33,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1447 transitions. [2023-08-30 10:02:33,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:33,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1447 transitions. [2023-08-30 10:02:33,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 206.71428571428572) internal successors, (1447), 7 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:33,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:33,998 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:33,998 INFO L175 Difference]: Start difference. First operand has 112 places, 235 transitions, 2388 flow. Second operand 7 states and 1447 transitions. [2023-08-30 10:02:33,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 475 transitions, 4917 flow [2023-08-30 10:02:57,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 475 transitions, 4825 flow, removed 46 selfloop flow, removed 0 redundant places. [2023-08-30 10:02:57,487 INFO L231 Difference]: Finished difference. Result has 121 places, 282 transitions, 3347 flow [2023-08-30 10:02:57,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3347, PETRI_PLACES=121, PETRI_TRANSITIONS=282} [2023-08-30 10:02:57,488 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 46 predicate places. [2023-08-30 10:02:57,488 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 282 transitions, 3347 flow [2023-08-30 10:02:57,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:57,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:57,488 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:02:57,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 10:02:57,488 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:02:57,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:57,488 INFO L85 PathProgramCache]: Analyzing trace with hash -217860359, now seen corresponding path program 1 times [2023-08-30 10:02:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:57,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485653105] [2023-08-30 10:02:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:57,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:02:57,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:57,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485653105] [2023-08-30 10:02:57,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485653105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:57,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:02:57,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:02:57,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097751232] [2023-08-30 10:02:57,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:57,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:02:57,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:57,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:02:57,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:02:57,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 377 [2023-08-30 10:02:57,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 282 transitions, 3347 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:57,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:57,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 377 [2023-08-30 10:02:57,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:03:26,508 INFO L130 PetriNetUnfolder]: 215740/311549 cut-off events. [2023-08-30 10:03:26,508 INFO L131 PetriNetUnfolder]: For 1986139/1986601 co-relation queries the response was YES. [2023-08-30 10:03:28,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254527 conditions, 311549 events. 215740/311549 cut-off events. For 1986139/1986601 co-relation queries the response was YES. Maximal size of possible extension queue 10733. Compared 2608844 event pairs, 51862 based on Foata normal form. 4761/298226 useless extension candidates. Maximal degree in co-relation 1254384. Up to 208508 conditions per place. [2023-08-30 10:03:29,700 INFO L137 encePairwiseOnDemand]: 356/377 looper letters, 409 selfloop transitions, 130 changer transitions 0/547 dead transitions. [2023-08-30 10:03:29,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 547 transitions, 6634 flow [2023-08-30 10:03:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:03:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:03:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1451 transitions. [2023-08-30 10:03:29,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5498294808639637 [2023-08-30 10:03:29,702 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1451 transitions. [2023-08-30 10:03:29,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1451 transitions. [2023-08-30 10:03:29,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:03:29,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1451 transitions. [2023-08-30 10:03:29,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.28571428571428) internal successors, (1451), 7 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:29,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:29,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:29,705 INFO L175 Difference]: Start difference. First operand has 121 places, 282 transitions, 3347 flow. Second operand 7 states and 1451 transitions. [2023-08-30 10:03:29,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 547 transitions, 6634 flow [2023-08-30 10:04:01,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 547 transitions, 6634 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:04:01,532 INFO L231 Difference]: Finished difference. Result has 131 places, 339 transitions, 4872 flow [2023-08-30 10:04:01,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4872, PETRI_PLACES=131, PETRI_TRANSITIONS=339} [2023-08-30 10:04:01,533 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 56 predicate places. [2023-08-30 10:04:01,533 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 339 transitions, 4872 flow [2023-08-30 10:04:01,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:01,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:04:01,533 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:04:01,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 10:04:01,534 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:04:01,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:04:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash -217860244, now seen corresponding path program 1 times [2023-08-30 10:04:01,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:04:01,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200385082] [2023-08-30 10:04:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:04:01,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:04:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:04:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:04:01,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:04:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200385082] [2023-08-30 10:04:01,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200385082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:04:01,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:04:01,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:04:01,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214981152] [2023-08-30 10:04:01,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:04:01,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:04:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:04:01,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:04:01,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:04:01,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 377 [2023-08-30 10:04:01,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 339 transitions, 4872 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:01,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:04:01,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 377 [2023-08-30 10:04:01,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:04:32,124 INFO L130 PetriNetUnfolder]: 206068/298542 cut-off events. [2023-08-30 10:04:32,124 INFO L131 PetriNetUnfolder]: For 2534860/2535155 co-relation queries the response was YES. [2023-08-30 10:04:33,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284888 conditions, 298542 events. 206068/298542 cut-off events. For 2534860/2535155 co-relation queries the response was YES. Maximal size of possible extension queue 10524. Compared 2515765 event pairs, 57629 based on Foata normal form. 5089/285901 useless extension candidates. Maximal degree in co-relation 1284738. Up to 201122 conditions per place. [2023-08-30 10:04:34,899 INFO L137 encePairwiseOnDemand]: 357/377 looper letters, 431 selfloop transitions, 141 changer transitions 0/580 dead transitions. [2023-08-30 10:04:34,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 580 transitions, 7478 flow [2023-08-30 10:04:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:04:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:04:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1487 transitions. [2023-08-30 10:04:34,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634710117468739 [2023-08-30 10:04:34,900 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1487 transitions. [2023-08-30 10:04:34,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1487 transitions. [2023-08-30 10:04:34,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:04:34,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1487 transitions. [2023-08-30 10:04:34,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.42857142857142) internal successors, (1487), 7 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:34,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:34,903 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 377.0) internal successors, (3016), 8 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:34,903 INFO L175 Difference]: Start difference. First operand has 131 places, 339 transitions, 4872 flow. Second operand 7 states and 1487 transitions. [2023-08-30 10:04:34,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 580 transitions, 7478 flow [2023-08-30 10:05:03,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 580 transitions, 7478 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:05:03,158 INFO L231 Difference]: Finished difference. Result has 141 places, 358 transitions, 5539 flow [2023-08-30 10:05:03,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=4233, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5539, PETRI_PLACES=141, PETRI_TRANSITIONS=358} [2023-08-30 10:05:03,158 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 66 predicate places. [2023-08-30 10:05:03,158 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 358 transitions, 5539 flow [2023-08-30 10:05:03,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:03,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:03,158 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 10:05:03,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-30 10:05:03,159 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:05:03,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash -668413135, now seen corresponding path program 1 times [2023-08-30 10:05:03,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:03,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153840051] [2023-08-30 10:05:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:03,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:03,213 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 10:05:03,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:03,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153840051] [2023-08-30 10:05:03,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153840051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:03,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:05:03,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:05:03,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901892394] [2023-08-30 10:05:03,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:03,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:05:03,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:03,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:05:03,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:05:03,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 377 [2023-08-30 10:05:03,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 358 transitions, 5539 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 10:05:03,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:03,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 377 [2023-08-30 10:05:03,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:17,834 INFO L130 PetriNetUnfolder]: 78826/128502 cut-off events. [2023-08-30 10:05:17,834 INFO L131 PetriNetUnfolder]: For 1437102/1437608 co-relation queries the response was YES. [2023-08-30 10:05:18,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579869 conditions, 128502 events. 78826/128502 cut-off events. For 1437102/1437608 co-relation queries the response was YES. Maximal size of possible extension queue 4141. Compared 1168154 event pairs, 21913 based on Foata normal form. 11524/123839 useless extension candidates. Maximal degree in co-relation 579711. Up to 63421 conditions per place. [2023-08-30 10:05:18,992 INFO L137 encePairwiseOnDemand]: 359/377 looper letters, 496 selfloop transitions, 32 changer transitions 1/539 dead transitions. [2023-08-30 10:05:18,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 539 transitions, 9198 flow [2023-08-30 10:05:19,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:05:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:05:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-30 10:05:19,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419982316534041 [2023-08-30 10:05:19,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-30 10:05:19,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-30 10:05:19,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:19,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-30 10:05:19,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:19,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:19,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:19,151 INFO L175 Difference]: Start difference. First operand has 141 places, 358 transitions, 5539 flow. Second operand 3 states and 613 transitions. [2023-08-30 10:05:19,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 539 transitions, 9198 flow [2023-08-30 10:05:31,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 539 transitions, 8926 flow, removed 132 selfloop flow, removed 1 redundant places. [2023-08-30 10:05:31,438 INFO L231 Difference]: Finished difference. Result has 143 places, 321 transitions, 4596 flow [2023-08-30 10:05:31,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=4310, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4596, PETRI_PLACES=143, PETRI_TRANSITIONS=321} [2023-08-30 10:05:31,438 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 68 predicate places. [2023-08-30 10:05:31,438 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 321 transitions, 4596 flow [2023-08-30 10:05:31,439 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 10:05:31,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:31,439 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:05:31,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-30 10:05:31,439 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:05:31,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:31,439 INFO L85 PathProgramCache]: Analyzing trace with hash -532576381, now seen corresponding path program 1 times [2023-08-30 10:05:31,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:31,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401784800] [2023-08-30 10:05:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:31,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:05:31,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:31,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401784800] [2023-08-30 10:05:31,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401784800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:31,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:05:31,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:05:31,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090632902] [2023-08-30 10:05:31,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:31,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:05:31,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:31,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:05:31,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:05:31,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 377 [2023-08-30 10:05:31,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 321 transitions, 4596 flow. Second operand has 6 states, 6 states have (on average 169.83333333333334) internal successors, (1019), 6 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:31,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:31,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 377 [2023-08-30 10:05:31,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand