./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_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_79-equ_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 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:29:26,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:29:26,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:29:26,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:29:26,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:29:26,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:29:26,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:29:26,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:29:26,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:29:26,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:29:26,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:29:26,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:29:26,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:29:26,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:29:26,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:29:26,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:29:26,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:29:26,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:29:26,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:29:26,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:29:26,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:29:26,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:29:26,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:29:26,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:29:26,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:29:26,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:29:26,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:29:26,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:29:26,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:29:26,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:29:26,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:29:26,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:29:26,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:29:26,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:29:26,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:29:26,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:29:26,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:29:26,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:29:26,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:29:26,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:29:26,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:29:26,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:29:26,270 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:29:26,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:29:26,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:29:26,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:29:26,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:29:26,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:29:26,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:29:26,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:29:26,274 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:29:26,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:29:26,275 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:29:26,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:29:26,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:29:26,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:29:26,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:29:26,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:29:26,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:29:26,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:29:26,277 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:29:26,277 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:29:26,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:29:26,277 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:29:26,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:29:26,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:29:26,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:29:26,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:29:26,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:29:26,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:29:26,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:29:26,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:29:26,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:29:26,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:29:26,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:29:26,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:29:26,280 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:29:26,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:29:26,281 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:29:26,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:29:26,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:29:26,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:29:26,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:29:26,618 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:29:26,618 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:29:26,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-30 10:29:27,710 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:29:28,005 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:29:28,006 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-30 10:29:28,027 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf512f55d/fbe2ddb46c74470d8017adae310d91a2/FLAG0a205e49b [2023-08-30 10:29:28,046 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf512f55d/fbe2ddb46c74470d8017adae310d91a2 [2023-08-30 10:29:28,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:29:28,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:29:28,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:29:28,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:29:28,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:29:28,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a85c54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28, skipping insertion in model container [2023-08-30 10:29:28,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:29:28,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:29:28,489 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_79-equ_racefree.i[47038,47051] [2023-08-30 10:29:28,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:29:28,524 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:29:28,552 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_79-equ_racefree.i[47038,47051] [2023-08-30 10:29:28,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:29:28,608 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:29:28,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28 WrapperNode [2023-08-30 10:29:28,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:29:28,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:29:28,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:29:28,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:29:28,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,654 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 220 [2023-08-30 10:29:28,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:29:28,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:29:28,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:29:28,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:29:28,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:29:28,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:29:28,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:29:28,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:29:28,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (1/1) ... [2023-08-30 10:29:28,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:29:28,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:29:28,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 10:29:28,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 10:29:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:29:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:29:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:29:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:29:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:29:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:29:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:29:28,788 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:29:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:29:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:29:28,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:29:28,790 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:29:28,947 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:29:28,962 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:29:29,330 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:29:29,337 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:29:29,338 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-08-30 10:29:29,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:29:29 BoogieIcfgContainer [2023-08-30 10:29:29,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:29:29,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:29:29,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:29:29,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:29:29,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:29:28" (1/3) ... [2023-08-30 10:29:29,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128e1763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:29:29, skipping insertion in model container [2023-08-30 10:29:29,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:29:28" (2/3) ... [2023-08-30 10:29:29,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128e1763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:29:29, skipping insertion in model container [2023-08-30 10:29:29,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:29:29" (3/3) ... [2023-08-30 10:29:29,347 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-08-30 10:29:29,354 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:29:29,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:29:29,363 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 10:29:29,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:29:29,467 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:29:29,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 231 transitions, 470 flow [2023-08-30 10:29:29,651 INFO L130 PetriNetUnfolder]: 43/308 cut-off events. [2023-08-30 10:29:29,652 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:29:29,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 308 events. 43/308 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 985 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-30 10:29:29,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 231 transitions, 470 flow [2023-08-30 10:29:29,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 226 transitions, 460 flow [2023-08-30 10:29:29,674 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:29:29,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 226 transitions, 460 flow [2023-08-30 10:29:29,694 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 226 transitions, 460 flow [2023-08-30 10:29:29,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 226 transitions, 460 flow [2023-08-30 10:29:29,763 INFO L130 PetriNetUnfolder]: 41/303 cut-off events. [2023-08-30 10:29:29,763 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:29:29,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 303 events. 41/303 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 997 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-30 10:29:29,774 INFO L119 LiptonReduction]: Number of co-enabled transitions 11136 [2023-08-30 10:29:36,343 INFO L134 LiptonReduction]: Checked pairs total: 25291 [2023-08-30 10:29:36,344 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-08-30 10:29:36,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:29:36,362 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;@6842ef53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:29:36,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:29:36,364 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 10:29:36,364 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:29:36,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:36,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 10:29:36,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:29:36,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash 886, now seen corresponding path program 1 times [2023-08-30 10:29:36,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:36,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012416777] [2023-08-30 10:29:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:36,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:36,490 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 10:29:36,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:36,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012416777] [2023-08-30 10:29:36,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012416777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:29:36,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:29:36,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 10:29:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053148795] [2023-08-30 10:29:36,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:29:36,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 10:29:36,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:36,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 10:29:36,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 10:29:36,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 449 [2023-08-30 10:29:36,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 78 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:36,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:36,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 449 [2023-08-30 10:29:36,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:36,796 INFO L130 PetriNetUnfolder]: 450/973 cut-off events. [2023-08-30 10:29:36,797 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:29:36,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 973 events. 450/973 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5250 event pairs, 408 based on Foata normal form. 113/826 useless extension candidates. Maximal degree in co-relation 1801. Up to 884 conditions per place. [2023-08-30 10:29:36,803 INFO L137 encePairwiseOnDemand]: 424/449 looper letters, 46 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-08-30 10:29:36,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 206 flow [2023-08-30 10:29:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 10:29:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 10:29:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 477 transitions. [2023-08-30 10:29:36,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311804008908686 [2023-08-30 10:29:36,823 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 477 transitions. [2023-08-30 10:29:36,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 477 transitions. [2023-08-30 10:29:36,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:36,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 477 transitions. [2023-08-30 10:29:36,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 238.5) internal successors, (477), 2 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:36,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:36,854 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:36,855 INFO L175 Difference]: Start difference. First operand has 59 places, 78 transitions, 164 flow. Second operand 2 states and 477 transitions. [2023-08-30 10:29:36,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 206 flow [2023-08-30 10:29:36,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:29:36,862 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 114 flow [2023-08-30 10:29:36,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-30 10:29:36,867 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2023-08-30 10:29:36,868 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 114 flow [2023-08-30 10:29:36,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:36,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:36,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:29:36,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:29:36,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:29:36,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash 27283261, now seen corresponding path program 1 times [2023-08-30 10:29:36,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:36,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766964389] [2023-08-30 10:29:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:36,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:37,092 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 10:29:37,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:37,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766964389] [2023-08-30 10:29:37,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766964389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:29:37,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:29:37,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:29:37,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015344938] [2023-08-30 10:29:37,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:29:37,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:29:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:29:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:29:37,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 449 [2023-08-30 10:29:37,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:37,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 449 [2023-08-30 10:29:37,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:37,253 INFO L130 PetriNetUnfolder]: 432/906 cut-off events. [2023-08-30 10:29:37,253 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:29:37,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 906 events. 432/906 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4863 event pairs, 224 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1739. Up to 739 conditions per place. [2023-08-30 10:29:37,258 INFO L137 encePairwiseOnDemand]: 444/449 looper letters, 60 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-30 10:29:37,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 274 flow [2023-08-30 10:29:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:29:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:29:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-30 10:29:37,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4892353377876763 [2023-08-30 10:29:37,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-30 10:29:37,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-30 10:29:37,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:37,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-30 10:29:37,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,281 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 114 flow. Second operand 3 states and 659 transitions. [2023-08-30 10:29:37,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 274 flow [2023-08-30 10:29:37,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:29:37,283 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 130 flow [2023-08-30 10:29:37,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 10:29:37,284 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2023-08-30 10:29:37,284 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 130 flow [2023-08-30 10:29:37,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:37,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:29:37,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:29:37,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:29:37,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:37,286 INFO L85 PathProgramCache]: Analyzing trace with hash 27283245, now seen corresponding path program 1 times [2023-08-30 10:29:37,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:37,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266666515] [2023-08-30 10:29:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:37,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:29:37,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:37,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266666515] [2023-08-30 10:29:37,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266666515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:29:37,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:29:37,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:29:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290324105] [2023-08-30 10:29:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:29:37,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:29:37,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:29:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:29:37,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 449 [2023-08-30 10:29:37,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:37,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 449 [2023-08-30 10:29:37,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:37,502 INFO L130 PetriNetUnfolder]: 393/851 cut-off events. [2023-08-30 10:29:37,503 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-30 10:29:37,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 851 events. 393/851 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5077 event pairs, 0 based on Foata normal form. 18/686 useless extension candidates. Maximal degree in co-relation 1758. Up to 774 conditions per place. [2023-08-30 10:29:37,534 INFO L137 encePairwiseOnDemand]: 446/449 looper letters, 60 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 10:29:37,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 286 flow [2023-08-30 10:29:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:29:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:29:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-08-30 10:29:37,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48997772828507796 [2023-08-30 10:29:37,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-08-30 10:29:37,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-08-30 10:29:37,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:37,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-08-30 10:29:37,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,543 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 130 flow. Second operand 3 states and 660 transitions. [2023-08-30 10:29:37,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 286 flow [2023-08-30 10:29:37,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:29:37,546 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 126 flow [2023-08-30 10:29:37,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-30 10:29:37,547 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2023-08-30 10:29:37,547 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 126 flow [2023-08-30 10:29:37,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:37,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:29:37,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:29:37,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:29:37,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1902811780, now seen corresponding path program 1 times [2023-08-30 10:29:37,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:37,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176717381] [2023-08-30 10:29:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:37,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:37,770 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 10:29:37,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:37,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176717381] [2023-08-30 10:29:37,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176717381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:29:37,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:29:37,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:29:37,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344692903] [2023-08-30 10:29:37,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:29:37,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:29:37,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:37,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:29:37,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:29:37,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 449 [2023-08-30 10:29:37,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:37,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:37,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 449 [2023-08-30 10:29:37,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:38,029 INFO L130 PetriNetUnfolder]: 413/925 cut-off events. [2023-08-30 10:29:38,029 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2023-08-30 10:29:38,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 925 events. 413/925 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5201 event pairs, 178 based on Foata normal form. 15/741 useless extension candidates. Maximal degree in co-relation 1865. Up to 554 conditions per place. [2023-08-30 10:29:38,034 INFO L137 encePairwiseOnDemand]: 442/449 looper letters, 81 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2023-08-30 10:29:38,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 394 flow [2023-08-30 10:29:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:29:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:29:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 859 transitions. [2023-08-30 10:29:38,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782850779510022 [2023-08-30 10:29:38,037 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 859 transitions. [2023-08-30 10:29:38,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 859 transitions. [2023-08-30 10:29:38,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:38,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 859 transitions. [2023-08-30 10:29:38,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.75) internal successors, (859), 4 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:38,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:38,044 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:38,044 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 126 flow. Second operand 4 states and 859 transitions. [2023-08-30 10:29:38,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 394 flow [2023-08-30 10:29:38,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 93 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:29:38,047 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 162 flow [2023-08-30 10:29:38,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-30 10:29:38,048 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2023-08-30 10:29:38,048 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 162 flow [2023-08-30 10:29:38,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:38,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:38,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:29:38,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:29:38,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:29:38,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:38,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1801056472, now seen corresponding path program 1 times [2023-08-30 10:29:38,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:38,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162938835] [2023-08-30 10:29:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:38,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:29:38,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:38,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162938835] [2023-08-30 10:29:38,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162938835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:29:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975006140] [2023-08-30 10:29:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:38,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:29:38,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:29:38,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:29:38,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:29:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:38,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:29:38,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:29:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:29:38,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:29:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:29:38,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975006140] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:29:39,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:29:39,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 10:29:39,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939595456] [2023-08-30 10:29:39,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:29:39,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:29:39,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:39,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:29:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:29:39,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 449 [2023-08-30 10:29:39,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 200.16666666666666) internal successors, (1201), 6 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:39,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:39,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 449 [2023-08-30 10:29:39,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:39,063 INFO L130 PetriNetUnfolder]: 32/106 cut-off events. [2023-08-30 10:29:39,063 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 10:29:39,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 106 events. 32/106 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 378 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 257. Up to 66 conditions per place. [2023-08-30 10:29:39,064 INFO L137 encePairwiseOnDemand]: 446/449 looper letters, 17 selfloop transitions, 2 changer transitions 17/40 dead transitions. [2023-08-30 10:29:39,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 179 flow [2023-08-30 10:29:39,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:29:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:29:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 828 transitions. [2023-08-30 10:29:39,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610244988864143 [2023-08-30 10:29:39,066 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 828 transitions. [2023-08-30 10:29:39,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 828 transitions. [2023-08-30 10:29:39,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:39,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 828 transitions. [2023-08-30 10:29:39,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:39,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:39,073 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:39,073 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 162 flow. Second operand 4 states and 828 transitions. [2023-08-30 10:29:39,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 179 flow [2023-08-30 10:29:39,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 163 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 10:29:39,075 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 49 flow [2023-08-30 10:29:39,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=49, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-08-30 10:29:39,075 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -26 predicate places. [2023-08-30 10:29:39,075 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 49 flow [2023-08-30 10:29:39,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.16666666666666) internal successors, (1201), 6 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:39,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:39,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:29:39,088 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 10:29:39,282 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 10:29:39,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:29:39,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash -926935045, now seen corresponding path program 1 times [2023-08-30 10:29:39,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:39,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322276435] [2023-08-30 10:29:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:39,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:39,562 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 10:29:39,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:39,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322276435] [2023-08-30 10:29:39,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322276435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:29:39,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:29:39,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:29:39,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979223809] [2023-08-30 10:29:39,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:29:39,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:29:39,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:39,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:29:39,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:29:39,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 449 [2023-08-30 10:29:39,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 49 flow. Second operand has 6 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:39,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:39,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 449 [2023-08-30 10:29:39,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:39,842 INFO L130 PetriNetUnfolder]: 13/54 cut-off events. [2023-08-30 10:29:39,842 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-08-30 10:29:39,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 54 events. 13/54 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 6 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 131. Up to 20 conditions per place. [2023-08-30 10:29:39,843 INFO L137 encePairwiseOnDemand]: 442/449 looper letters, 13 selfloop transitions, 8 changer transitions 0/24 dead transitions. [2023-08-30 10:29:39,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 125 flow [2023-08-30 10:29:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:29:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:29:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1358 transitions. [2023-08-30 10:29:39,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43207126948775054 [2023-08-30 10:29:39,847 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1358 transitions. [2023-08-30 10:29:39,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1358 transitions. [2023-08-30 10:29:39,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:39,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1358 transitions. [2023-08-30 10:29:39,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:39,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 449.0) internal successors, (3592), 8 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:39,858 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 449.0) internal successors, (3592), 8 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:39,858 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 49 flow. Second operand 7 states and 1358 transitions. [2023-08-30 10:29:39,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 125 flow [2023-08-30 10:29:39,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:29:39,860 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 92 flow [2023-08-30 10:29:39,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-08-30 10:29:39,862 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -27 predicate places. [2023-08-30 10:29:39,863 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 92 flow [2023-08-30 10:29:39,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:39,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:39,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:29:39,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:29:39,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:29:39,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash -926935003, now seen corresponding path program 1 times [2023-08-30 10:29:39,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:39,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416736125] [2023-08-30 10:29:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:39,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:39,950 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 10:29:39,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416736125] [2023-08-30 10:29:39,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416736125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:29:39,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:29:39,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:29:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870399515] [2023-08-30 10:29:39,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:29:39,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:29:39,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:29:39,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:29:40,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 449 [2023-08-30 10:29:40,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:40,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:40,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 449 [2023-08-30 10:29:40,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:40,029 INFO L130 PetriNetUnfolder]: 9/46 cut-off events. [2023-08-30 10:29:40,029 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 10:29:40,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 46 events. 9/46 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 6 based on Foata normal form. 3/49 useless extension candidates. Maximal degree in co-relation 135. Up to 24 conditions per place. [2023-08-30 10:29:40,029 INFO L137 encePairwiseOnDemand]: 444/449 looper letters, 9 selfloop transitions, 6 changer transitions 1/20 dead transitions. [2023-08-30 10:29:40,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 20 transitions, 125 flow [2023-08-30 10:29:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:29:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:29:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-08-30 10:29:40,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44766146993318484 [2023-08-30 10:29:40,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-08-30 10:29:40,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-08-30 10:29:40,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:40,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-08-30 10:29:40,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:40,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:40,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:40,036 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 92 flow. Second operand 3 states and 603 transitions. [2023-08-30 10:29:40,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 20 transitions, 125 flow [2023-08-30 10:29:40,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 10:29:40,040 INFO L231 Difference]: Finished difference. Result has 30 places, 18 transitions, 81 flow [2023-08-30 10:29:40,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2023-08-30 10:29:40,041 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -29 predicate places. [2023-08-30 10:29:40,041 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 81 flow [2023-08-30 10:29:40,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:40,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:40,042 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:29:40,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:29:40,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:29:40,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1311492743, now seen corresponding path program 1 times [2023-08-30 10:29:40,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:40,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811220999] [2023-08-30 10:29:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:40,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:29:40,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:40,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811220999] [2023-08-30 10:29:40,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811220999] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:29:40,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283625600] [2023-08-30 10:29:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:40,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:29:40,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:29:40,307 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:29:40,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:29:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:40,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:29:40,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:29:40,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:29:40,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:29:40,968 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:29:40,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:29:40,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:29:41,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:29:41,007 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:29:41,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:29:41,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:29:41,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:29:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:29:41,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:29:41,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283625600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:29:41,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:29:41,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-30 10:29:41,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548159214] [2023-08-30 10:29:41,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:29:41,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:29:41,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:41,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:29:41,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:29:41,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 449 [2023-08-30 10:29:41,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:41,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:41,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 449 [2023-08-30 10:29:41,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:41,442 INFO L130 PetriNetUnfolder]: 6/31 cut-off events. [2023-08-30 10:29:41,442 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 10:29:41,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 31 events. 6/31 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 5 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 91. Up to 23 conditions per place. [2023-08-30 10:29:41,442 INFO L137 encePairwiseOnDemand]: 447/449 looper letters, 12 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 10:29:41,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 17 transitions, 102 flow [2023-08-30 10:29:41,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:29:41,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:29:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-08-30 10:29:41,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44023756495916855 [2023-08-30 10:29:41,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-08-30 10:29:41,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-08-30 10:29:41,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:41,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-08-30 10:29:41,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:41,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:41,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:41,448 INFO L175 Difference]: Start difference. First operand has 30 places, 18 transitions, 81 flow. Second operand 3 states and 593 transitions. [2023-08-30 10:29:41,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 17 transitions, 102 flow [2023-08-30 10:29:41,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 92 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 10:29:41,450 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 68 flow [2023-08-30 10:29:41,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-30 10:29:41,450 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -31 predicate places. [2023-08-30 10:29:41,451 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 68 flow [2023-08-30 10:29:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:41,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:41,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:29:41,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:29:41,657 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,SelfDestructingSolverStorable7 [2023-08-30 10:29:41,657 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:29:41,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:41,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1311492785, now seen corresponding path program 1 times [2023-08-30 10:29:41,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:41,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376582340] [2023-08-30 10:29:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:41,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:29:41,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:41,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376582340] [2023-08-30 10:29:41,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376582340] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:29:41,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643798904] [2023-08-30 10:29:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:41,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:29:41,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:29:41,865 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 10:29:41,870 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 10:29:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:41,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 10:29:41,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:29:42,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:29:42,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:29:42,455 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:29:42,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:29:42,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:29:42,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:29:42,548 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:29:42,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:29:42,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:29:42,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:29:43,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-30 10:29:44,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:29:44,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:29:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:29:44,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:29:44,345 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_209 (Array Int Int)) (v_ArrVal_208 Int)) (or (< v_ArrVal_208 (+ |c_t_funThread1of1ForFork0_#t~mem6#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store (select |c_#memory_int| |c_~#A~0.base|) |c_~#A~0.offset| v_ArrVal_208)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_209) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)))) is different from false [2023-08-30 10:29:44,354 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_209 (Array Int Int)) (v_ArrVal_208 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#A~0.base|))) (or (< v_ArrVal_208 (+ (select .cse0 |c_~#A~0.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store .cse0 |c_~#A~0.offset| v_ArrVal_208)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_209) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648))))) is different from false [2023-08-30 10:29:44,401 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_206 (Array Int Int)) (v_ArrVal_209 (Array Int Int)) (v_ArrVal_208 Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_206))) (let ((.cse0 (select .cse1 |c_~#A~0.base|))) (or (< v_ArrVal_208 (+ (select .cse0 |c_~#A~0.offset|) 1)) (< 0 (+ (select (select (store (store .cse1 |c_~#A~0.base| (store .cse0 |c_~#A~0.offset| v_ArrVal_208)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_209) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)))))) is different from false [2023-08-30 10:29:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:29:44,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643798904] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:29:44,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:29:44,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 13 [2023-08-30 10:29:44,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34465530] [2023-08-30 10:29:44,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:29:44,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:29:44,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:44,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:29:44,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=93, Unknown=3, NotChecked=66, Total=210 [2023-08-30 10:29:44,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 449 [2023-08-30 10:29:44,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 68 flow. Second operand has 15 states, 15 states have (on average 159.4) internal successors, (2391), 15 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:44,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:44,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 449 [2023-08-30 10:29:44,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:44,933 INFO L130 PetriNetUnfolder]: 7/31 cut-off events. [2023-08-30 10:29:44,933 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 10:29:44,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 31 events. 7/31 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 3 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 88. Up to 13 conditions per place. [2023-08-30 10:29:44,933 INFO L137 encePairwiseOnDemand]: 444/449 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-30 10:29:44,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 111 flow [2023-08-30 10:29:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:29:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:29:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 958 transitions. [2023-08-30 10:29:44,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3556050482553823 [2023-08-30 10:29:44,939 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 958 transitions. [2023-08-30 10:29:44,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 958 transitions. [2023-08-30 10:29:44,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:44,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 958 transitions. [2023-08-30 10:29:44,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:44,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:44,946 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:44,946 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 68 flow. Second operand 6 states and 958 transitions. [2023-08-30 10:29:44,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 111 flow [2023-08-30 10:29:44,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:29:44,947 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-30 10:29:44,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-30 10:29:44,948 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -29 predicate places. [2023-08-30 10:29:44,948 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-30 10:29:44,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 159.4) internal successors, (2391), 15 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:44,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 10:29:44,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 10:29:44,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 10:29:44,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 10:29:44,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 10:29:44,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 10:29:44,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 10:29:44,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 10:29:44,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 10:29:44,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 10:29:44,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 10:29:44,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 10:29:44,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 10:29:44,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 10:29:44,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 10:29:44,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 10:29:44,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 10:29:44,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 10:29:44,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 10:29:44,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 10:29:44,963 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 10:29:45,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:29:45,161 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:29:45,163 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:29:45,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 231 transitions, 470 flow [2023-08-30 10:29:45,190 INFO L130 PetriNetUnfolder]: 43/308 cut-off events. [2023-08-30 10:29:45,190 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:29:45,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 308 events. 43/308 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 985 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-30 10:29:45,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 231 transitions, 470 flow [2023-08-30 10:29:45,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 216 transitions, 437 flow [2023-08-30 10:29:45,193 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:29:45,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 216 transitions, 437 flow [2023-08-30 10:29:45,194 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 216 transitions, 437 flow [2023-08-30 10:29:45,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 216 transitions, 437 flow [2023-08-30 10:29:45,213 INFO L130 PetriNetUnfolder]: 41/293 cut-off events. [2023-08-30 10:29:45,213 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:29:45,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 293 events. 41/293 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 945 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-30 10:29:45,219 INFO L119 LiptonReduction]: Number of co-enabled transitions 11136 [2023-08-30 10:29:50,129 INFO L134 LiptonReduction]: Checked pairs total: 22412 [2023-08-30 10:29:50,129 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 10:29:50,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:29:50,131 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;@6842ef53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:29:50,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:29:50,137 INFO L130 PetriNetUnfolder]: 11/46 cut-off events. [2023-08-30 10:29:50,137 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:29:50,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:50,137 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:29:50,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:29:50,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1821401829, now seen corresponding path program 1 times [2023-08-30 10:29:50,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:50,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771806530] [2023-08-30 10:29:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:50,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:29:50,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:29:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:29:50,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:29:50,176 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:29:50,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:29:50,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:29:50,176 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:29:50,177 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:29:50,177 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:29:50,177 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:29:50,203 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:29:50,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 297 transitions, 612 flow [2023-08-30 10:29:50,261 INFO L130 PetriNetUnfolder]: 72/487 cut-off events. [2023-08-30 10:29:50,262 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:29:50,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 487 events. 72/487 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1896 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 310. Up to 12 conditions per place. [2023-08-30 10:29:50,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 297 transitions, 612 flow [2023-08-30 10:29:50,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 295 transitions, 608 flow [2023-08-30 10:29:50,270 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:29:50,270 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 295 transitions, 608 flow [2023-08-30 10:29:50,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 295 transitions, 608 flow [2023-08-30 10:29:50,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 295 transitions, 608 flow [2023-08-30 10:29:50,318 INFO L130 PetriNetUnfolder]: 71/485 cut-off events. [2023-08-30 10:29:50,318 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:29:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 485 events. 71/485 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1920 event pairs, 0 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 308. Up to 12 conditions per place. [2023-08-30 10:29:50,340 INFO L119 LiptonReduction]: Number of co-enabled transitions 32896 [2023-08-30 10:29:56,974 INFO L134 LiptonReduction]: Checked pairs total: 85937 [2023-08-30 10:29:56,974 INFO L136 LiptonReduction]: Total number of compositions: 271 [2023-08-30 10:29:56,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:29:56,977 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;@6842ef53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:29:56,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-30 10:29:56,977 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 10:29:56,978 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:29:56,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:56,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 10:29:56,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:29:56,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1711, now seen corresponding path program 1 times [2023-08-30 10:29:56,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:56,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371932844] [2023-08-30 10:29:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:56,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:56,983 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 10:29:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371932844] [2023-08-30 10:29:56,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371932844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:29:56,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:29:56,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 10:29:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67217859] [2023-08-30 10:29:56,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:29:56,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 10:29:56,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:56,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 10:29:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 10:29:56,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 568 [2023-08-30 10:29:56,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 115 transitions, 248 flow. Second operand has 2 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:56,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:56,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 568 [2023-08-30 10:29:56,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:29:59,014 INFO L130 PetriNetUnfolder]: 19032/29617 cut-off events. [2023-08-30 10:29:59,015 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2023-08-30 10:29:59,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57888 conditions, 29617 events. 19032/29617 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 214118 event pairs, 18054 based on Foata normal form. 3827/24654 useless extension candidates. Maximal degree in co-relation 25656. Up to 28153 conditions per place. [2023-08-30 10:29:59,199 INFO L137 encePairwiseOnDemand]: 533/568 looper letters, 69 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2023-08-30 10:29:59,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 316 flow [2023-08-30 10:29:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 10:29:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 10:29:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 614 transitions. [2023-08-30 10:29:59,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404929577464789 [2023-08-30 10:29:59,203 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 614 transitions. [2023-08-30 10:29:59,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 614 transitions. [2023-08-30 10:29:59,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:29:59,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 614 transitions. [2023-08-30 10:29:59,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 307.0) internal successors, (614), 2 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:59,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:59,208 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:59,208 INFO L175 Difference]: Start difference. First operand has 84 places, 115 transitions, 248 flow. Second operand 2 states and 614 transitions. [2023-08-30 10:29:59,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 316 flow [2023-08-30 10:29:59,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:29:59,211 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 178 flow [2023-08-30 10:29:59,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=178, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2023-08-30 10:29:59,212 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2023-08-30 10:29:59,212 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 178 flow [2023-08-30 10:29:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:59,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:29:59,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:29:59,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:29:59,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:29:59,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:29:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1632482291, now seen corresponding path program 1 times [2023-08-30 10:29:59,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:29:59,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385794483] [2023-08-30 10:29:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:29:59,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:29:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:29:59,248 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 10:29:59,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:29:59,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385794483] [2023-08-30 10:29:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385794483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:29:59,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:29:59,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:29:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407126900] [2023-08-30 10:29:59,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:29:59,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:29:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:29:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:29:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:29:59,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 568 [2023-08-30 10:29:59,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:29:59,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:29:59,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 568 [2023-08-30 10:29:59,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:00,985 INFO L130 PetriNetUnfolder]: 17851/28032 cut-off events. [2023-08-30 10:30:00,986 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-30 10:30:01,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55203 conditions, 28032 events. 17851/28032 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 214860 event pairs, 1746 based on Foata normal form. 0/19961 useless extension candidates. Maximal degree in co-relation 55198. Up to 24164 conditions per place. [2023-08-30 10:30:01,138 INFO L137 encePairwiseOnDemand]: 563/568 looper letters, 102 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 10:30:01,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 116 transitions, 460 flow [2023-08-30 10:30:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:30:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:30:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2023-08-30 10:30:01,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029342723004695 [2023-08-30 10:30:01,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2023-08-30 10:30:01,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2023-08-30 10:30:01,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:01,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2023-08-30 10:30:01,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:01,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:01,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:01,148 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 178 flow. Second operand 3 states and 857 transitions. [2023-08-30 10:30:01,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 116 transitions, 460 flow [2023-08-30 10:30:01,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 116 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:30:01,153 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 194 flow [2023-08-30 10:30:01,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2023-08-30 10:30:01,154 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2023-08-30 10:30:01,154 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 194 flow [2023-08-30 10:30:01,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:01,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:01,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:30:01,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:30:01,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:01,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1632482205, now seen corresponding path program 1 times [2023-08-30 10:30:01,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:01,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722485962] [2023-08-30 10:30:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:01,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:01,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:01,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722485962] [2023-08-30 10:30:01,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722485962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:01,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:01,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:30:01,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134974109] [2023-08-30 10:30:01,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:01,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:30:01,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:01,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:30:01,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:30:01,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 568 [2023-08-30 10:30:01,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:01,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:01,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 568 [2023-08-30 10:30:01,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:02,736 INFO L130 PetriNetUnfolder]: 18115/28273 cut-off events. [2023-08-30 10:30:02,736 INFO L131 PetriNetUnfolder]: For 2612/2612 co-relation queries the response was YES. [2023-08-30 10:30:02,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57334 conditions, 28273 events. 18115/28273 cut-off events. For 2612/2612 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 205564 event pairs, 8316 based on Foata normal form. 19/20847 useless extension candidates. Maximal degree in co-relation 57327. Up to 26994 conditions per place. [2023-08-30 10:30:02,897 INFO L137 encePairwiseOnDemand]: 565/568 looper letters, 86 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-30 10:30:02,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 99 transitions, 412 flow [2023-08-30 10:30:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:30:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:30:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 842 transitions. [2023-08-30 10:30:02,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49413145539906106 [2023-08-30 10:30:02,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 842 transitions. [2023-08-30 10:30:02,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 842 transitions. [2023-08-30 10:30:02,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:02,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 842 transitions. [2023-08-30 10:30:02,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:02,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:02,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:02,906 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 194 flow. Second operand 3 states and 842 transitions. [2023-08-30 10:30:02,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 99 transitions, 412 flow [2023-08-30 10:30:02,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 99 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:30:02,910 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 202 flow [2023-08-30 10:30:02,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2023-08-30 10:30:02,911 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2023-08-30 10:30:02,911 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 202 flow [2023-08-30 10:30:02,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:02,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:02,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:02,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:30:02,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:02,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:02,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1678228258, now seen corresponding path program 1 times [2023-08-30 10:30:02,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:02,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305189696] [2023-08-30 10:30:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:02,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:03,030 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 10:30:03,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:03,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305189696] [2023-08-30 10:30:03,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305189696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:03,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:03,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:30:03,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070063200] [2023-08-30 10:30:03,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:03,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:30:03,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:03,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:30:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:30:03,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 568 [2023-08-30 10:30:03,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:03,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:03,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 568 [2023-08-30 10:30:03,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:04,841 INFO L130 PetriNetUnfolder]: 19638/31077 cut-off events. [2023-08-30 10:30:04,841 INFO L131 PetriNetUnfolder]: For 2087/2087 co-relation queries the response was YES. [2023-08-30 10:30:04,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63163 conditions, 31077 events. 19638/31077 cut-off events. For 2087/2087 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 232158 event pairs, 7026 based on Foata normal form. 0/23424 useless extension candidates. Maximal degree in co-relation 63155. Up to 23113 conditions per place. [2023-08-30 10:30:05,041 INFO L137 encePairwiseOnDemand]: 553/568 looper letters, 152 selfloop transitions, 12 changer transitions 0/175 dead transitions. [2023-08-30 10:30:05,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 175 transitions, 760 flow [2023-08-30 10:30:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:30:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:30:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1143 transitions. [2023-08-30 10:30:05,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503080985915493 [2023-08-30 10:30:05,049 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1143 transitions. [2023-08-30 10:30:05,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1143 transitions. [2023-08-30 10:30:05,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:05,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1143 transitions. [2023-08-30 10:30:05,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:05,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:05,056 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:05,057 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 202 flow. Second operand 4 states and 1143 transitions. [2023-08-30 10:30:05,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 175 transitions, 760 flow [2023-08-30 10:30:05,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 175 transitions, 757 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:30:05,061 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 308 flow [2023-08-30 10:30:05,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2023-08-30 10:30:05,062 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2023-08-30 10:30:05,062 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 308 flow [2023-08-30 10:30:05,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:05,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:05,063 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:30:05,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:30:05,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:05,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash -577709025, now seen corresponding path program 1 times [2023-08-30 10:30:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:05,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134563244] [2023-08-30 10:30:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:05,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:05,099 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 10:30:05,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:05,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134563244] [2023-08-30 10:30:05,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134563244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:05,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:05,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:30:05,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335960398] [2023-08-30 10:30:05,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:05,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:30:05,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:30:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:30:05,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 568 [2023-08-30 10:30:05,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:05,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:05,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 568 [2023-08-30 10:30:05,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:06,837 INFO L130 PetriNetUnfolder]: 18965/30068 cut-off events. [2023-08-30 10:30:06,837 INFO L131 PetriNetUnfolder]: For 8082/8082 co-relation queries the response was YES. [2023-08-30 10:30:06,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69235 conditions, 30068 events. 18965/30068 cut-off events. For 8082/8082 co-relation queries the response was YES. Maximal size of possible extension queue 1174. Compared 223059 event pairs, 17142 based on Foata normal form. 368/25059 useless extension candidates. Maximal degree in co-relation 69225. Up to 28931 conditions per place. [2023-08-30 10:30:06,979 INFO L137 encePairwiseOnDemand]: 566/568 looper letters, 79 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-30 10:30:06,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 464 flow [2023-08-30 10:30:06,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:30:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:30:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 821 transitions. [2023-08-30 10:30:06,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818075117370892 [2023-08-30 10:30:06,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 821 transitions. [2023-08-30 10:30:06,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 821 transitions. [2023-08-30 10:30:06,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:06,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 821 transitions. [2023-08-30 10:30:06,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:06,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:06,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:06,990 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 308 flow. Second operand 3 states and 821 transitions. [2023-08-30 10:30:06,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 464 flow [2023-08-30 10:30:07,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:30:07,004 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 306 flow [2023-08-30 10:30:07,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2023-08-30 10:30:07,004 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2023-08-30 10:30:07,004 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 306 flow [2023-08-30 10:30:07,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:07,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:07,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:07,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:30:07,005 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:07,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:07,006 INFO L85 PathProgramCache]: Analyzing trace with hash -695489920, now seen corresponding path program 1 times [2023-08-30 10:30:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:07,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469737165] [2023-08-30 10:30:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:07,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:07,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:07,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469737165] [2023-08-30 10:30:07,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469737165] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:07,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176759474] [2023-08-30 10:30:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:07,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:07,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:07,057 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 10:30:07,061 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 10:30:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:07,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:30:07,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:07,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:07,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176759474] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:07,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:07,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 10:30:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825229565] [2023-08-30 10:30:07,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:07,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:30:07,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:30:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:30:07,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 568 [2023-08-30 10:30:07,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:07,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:07,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 568 [2023-08-30 10:30:07,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:07,998 INFO L130 PetriNetUnfolder]: 1766/3341 cut-off events. [2023-08-30 10:30:07,998 INFO L131 PetriNetUnfolder]: For 1986/1986 co-relation queries the response was YES. [2023-08-30 10:30:08,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9246 conditions, 3341 events. 1766/3341 cut-off events. For 1986/1986 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 22622 event pairs, 32 based on Foata normal form. 387/3386 useless extension candidates. Maximal degree in co-relation 9235. Up to 2121 conditions per place. [2023-08-30 10:30:08,011 INFO L137 encePairwiseOnDemand]: 565/568 looper letters, 100 selfloop transitions, 3 changer transitions 2/113 dead transitions. [2023-08-30 10:30:08,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 576 flow [2023-08-30 10:30:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:30:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:30:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1348 transitions. [2023-08-30 10:30:08,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47464788732394364 [2023-08-30 10:30:08,015 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1348 transitions. [2023-08-30 10:30:08,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1348 transitions. [2023-08-30 10:30:08,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:08,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1348 transitions. [2023-08-30 10:30:08,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.6) internal successors, (1348), 5 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:08,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:08,022 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:08,023 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 306 flow. Second operand 5 states and 1348 transitions. [2023-08-30 10:30:08,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 576 flow [2023-08-30 10:30:08,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 573 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:30:08,027 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 195 flow [2023-08-30 10:30:08,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-08-30 10:30:08,028 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -16 predicate places. [2023-08-30 10:30:08,028 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 195 flow [2023-08-30 10:30:08,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:08,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:08,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:08,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 10:30:08,233 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,SelfDestructingSolverStorable15 [2023-08-30 10:30:08,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:08,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1482389054, now seen corresponding path program 1 times [2023-08-30 10:30:08,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:08,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638389728] [2023-08-30 10:30:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:08,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:08,311 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 10:30:08,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:08,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638389728] [2023-08-30 10:30:08,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638389728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:08,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:08,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:30:08,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808168858] [2023-08-30 10:30:08,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:08,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:30:08,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:30:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:30:08,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 568 [2023-08-30 10:30:08,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 243.5) internal successors, (974), 4 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:08,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:08,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 568 [2023-08-30 10:30:08,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:08,808 INFO L130 PetriNetUnfolder]: 2297/4258 cut-off events. [2023-08-30 10:30:08,808 INFO L131 PetriNetUnfolder]: For 4721/4721 co-relation queries the response was YES. [2023-08-30 10:30:08,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11673 conditions, 4258 events. 2297/4258 cut-off events. For 4721/4721 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 29573 event pairs, 904 based on Foata normal form. 0/3874 useless extension candidates. Maximal degree in co-relation 11662. Up to 1830 conditions per place. [2023-08-30 10:30:08,830 INFO L137 encePairwiseOnDemand]: 554/568 looper letters, 100 selfloop transitions, 25 changer transitions 0/133 dead transitions. [2023-08-30 10:30:08,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 133 transitions, 712 flow [2023-08-30 10:30:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:30:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:30:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1323 transitions. [2023-08-30 10:30:08,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658450704225352 [2023-08-30 10:30:08,835 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1323 transitions. [2023-08-30 10:30:08,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1323 transitions. [2023-08-30 10:30:08,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:08,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1323 transitions. [2023-08-30 10:30:08,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 264.6) internal successors, (1323), 5 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:08,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:08,842 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:08,842 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 195 flow. Second operand 5 states and 1323 transitions. [2023-08-30 10:30:08,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 133 transitions, 712 flow [2023-08-30 10:30:08,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 695 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 10:30:08,849 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 398 flow [2023-08-30 10:30:08,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2023-08-30 10:30:08,849 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -11 predicate places. [2023-08-30 10:30:08,850 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 398 flow [2023-08-30 10:30:08,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.5) internal successors, (974), 4 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:08,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:08,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:08,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 10:30:08,850 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:08,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:08,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1482388994, now seen corresponding path program 1 times [2023-08-30 10:30:08,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:08,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079680448] [2023-08-30 10:30:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:08,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:09,053 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 10:30:09,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:09,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079680448] [2023-08-30 10:30:09,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079680448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:09,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:09,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:30:09,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116069033] [2023-08-30 10:30:09,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:09,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:30:09,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:09,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:30:09,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:30:09,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 568 [2023-08-30 10:30:09,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 398 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:09,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:09,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 568 [2023-08-30 10:30:09,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:09,749 INFO L130 PetriNetUnfolder]: 2421/4596 cut-off events. [2023-08-30 10:30:09,749 INFO L131 PetriNetUnfolder]: For 8850/8853 co-relation queries the response was YES. [2023-08-30 10:30:09,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 4596 events. 2421/4596 cut-off events. For 8850/8853 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 32692 event pairs, 750 based on Foata normal form. 93/4534 useless extension candidates. Maximal degree in co-relation 14542. Up to 2359 conditions per place. [2023-08-30 10:30:09,774 INFO L137 encePairwiseOnDemand]: 552/568 looper letters, 128 selfloop transitions, 29 changer transitions 4/169 dead transitions. [2023-08-30 10:30:09,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 169 transitions, 1137 flow [2023-08-30 10:30:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:30:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:30:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2046 transitions. [2023-08-30 10:30:09,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45026408450704225 [2023-08-30 10:30:09,780 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2046 transitions. [2023-08-30 10:30:09,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2046 transitions. [2023-08-30 10:30:09,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:09,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2046 transitions. [2023-08-30 10:30:09,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 255.75) internal successors, (2046), 8 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:09,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 568.0) internal successors, (5112), 9 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:09,791 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 568.0) internal successors, (5112), 9 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:09,791 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 398 flow. Second operand 8 states and 2046 transitions. [2023-08-30 10:30:09,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 169 transitions, 1137 flow [2023-08-30 10:30:09,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 169 transitions, 1137 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:30:09,802 INFO L231 Difference]: Finished difference. Result has 83 places, 92 transitions, 691 flow [2023-08-30 10:30:09,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=691, PETRI_PLACES=83, PETRI_TRANSITIONS=92} [2023-08-30 10:30:09,802 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2023-08-30 10:30:09,803 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 92 transitions, 691 flow [2023-08-30 10:30:09,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:09,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:09,803 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:09,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:30:09,804 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:09,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash -719322331, now seen corresponding path program 1 times [2023-08-30 10:30:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:09,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594388633] [2023-08-30 10:30:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:09,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:09,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594388633] [2023-08-30 10:30:09,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594388633] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:09,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020402326] [2023-08-30 10:30:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:09,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:09,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:09,986 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 10:30:10,008 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 10:30:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:10,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:30:10,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:10,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:10,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:10,566 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:30:10,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:30:10,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:10,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:10,597 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:30:10,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:30:10,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:30:10,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:30:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:10,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:30:10,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020402326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:10,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:30:10,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 10:30:10,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754956555] [2023-08-30 10:30:10,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:10,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:30:10,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:10,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:30:10,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:30:11,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 568 [2023-08-30 10:30:11,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 92 transitions, 691 flow. Second operand has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:11,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:11,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 568 [2023-08-30 10:30:11,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:11,464 INFO L130 PetriNetUnfolder]: 2347/4395 cut-off events. [2023-08-30 10:30:11,464 INFO L131 PetriNetUnfolder]: For 13998/14001 co-relation queries the response was YES. [2023-08-30 10:30:11,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15420 conditions, 4395 events. 2347/4395 cut-off events. For 13998/14001 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 30256 event pairs, 1537 based on Foata normal form. 60/4305 useless extension candidates. Maximal degree in co-relation 15404. Up to 3183 conditions per place. [2023-08-30 10:30:11,484 INFO L137 encePairwiseOnDemand]: 557/568 looper letters, 91 selfloop transitions, 19 changer transitions 7/125 dead transitions. [2023-08-30 10:30:11,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 125 transitions, 1036 flow [2023-08-30 10:30:11,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:30:11,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:30:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1278 transitions. [2023-08-30 10:30:11,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-08-30 10:30:11,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1278 transitions. [2023-08-30 10:30:11,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1278 transitions. [2023-08-30 10:30:11,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:11,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1278 transitions. [2023-08-30 10:30:11,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.6) internal successors, (1278), 5 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 10:30:11,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:11,495 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:11,495 INFO L175 Difference]: Start difference. First operand has 83 places, 92 transitions, 691 flow. Second operand 5 states and 1278 transitions. [2023-08-30 10:30:11,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 125 transitions, 1036 flow [2023-08-30 10:30:11,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 125 transitions, 1010 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 10:30:11,513 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 697 flow [2023-08-30 10:30:11,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=697, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2023-08-30 10:30:11,514 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-08-30 10:30:11,514 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 697 flow [2023-08-30 10:30:11,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:11,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:11,514 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:11,523 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 10:30:11,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:11,719 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:11,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:11,720 INFO L85 PathProgramCache]: Analyzing trace with hash -719322391, now seen corresponding path program 1 times [2023-08-30 10:30:11,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:11,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150419432] [2023-08-30 10:30:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:11,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:11,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:11,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150419432] [2023-08-30 10:30:11,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150419432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:11,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076848452] [2023-08-30 10:30:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:11,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:11,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:11,974 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 10:30:11,977 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 10:30:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:12,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 10:30:12,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:12,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:12,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:12,628 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:30:12,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:30:12,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:12,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:12,728 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:30:12,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:30:12,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:12,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:30:13,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-30 10:30:14,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:14,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:30:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:14,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:14,699 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_442 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_442) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648))) is different from false [2023-08-30 10:30:14,709 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_441 Int) (v_ArrVal_442 (Array Int Int))) (or (< v_ArrVal_441 (+ |c_t_funThread1of2ForFork0_#t~post7#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store (select |c_#memory_int| |c_~#A~0.base|) |c_~#A~0.offset| v_ArrVal_441)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_442) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)))) is different from false [2023-08-30 10:30:14,717 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_441 Int) (v_ArrVal_442 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#A~0.base|))) (or (< v_ArrVal_441 (+ (select .cse0 |c_~#A~0.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store .cse0 |c_~#A~0.offset| v_ArrVal_441)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_442) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648))))) is different from false [2023-08-30 10:30:14,759 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_441 Int) (v_ArrVal_439 (Array Int Int)) (v_ArrVal_442 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_439))) (let ((.cse1 (select .cse0 |c_~#A~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#A~0.base| (store .cse1 |c_~#A~0.offset| v_ArrVal_441)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_442) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)) (< v_ArrVal_441 (+ (select .cse1 |c_~#A~0.offset|) 1)))))) is different from false [2023-08-30 10:30:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:30:14,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076848452] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:14,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:14,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 13 [2023-08-30 10:30:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276524142] [2023-08-30 10:30:14,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:14,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:30:14,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:14,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:30:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=80, Unknown=4, NotChecked=84, Total=210 [2023-08-30 10:30:14,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 568 [2023-08-30 10:30:14,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 697 flow. Second operand has 15 states, 15 states have (on average 200.4) internal successors, (3006), 15 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:14,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:14,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 568 [2023-08-30 10:30:14,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:15,705 INFO L130 PetriNetUnfolder]: 2361/4517 cut-off events. [2023-08-30 10:30:15,705 INFO L131 PetriNetUnfolder]: For 16319/16322 co-relation queries the response was YES. [2023-08-30 10:30:15,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16489 conditions, 4517 events. 2361/4517 cut-off events. For 16319/16322 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 31833 event pairs, 827 based on Foata normal form. 65/4435 useless extension candidates. Maximal degree in co-relation 16469. Up to 1795 conditions per place. [2023-08-30 10:30:15,723 INFO L137 encePairwiseOnDemand]: 551/568 looper letters, 119 selfloop transitions, 44 changer transitions 32/202 dead transitions. [2023-08-30 10:30:15,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 202 transitions, 1690 flow [2023-08-30 10:30:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:30:15,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:30:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2135 transitions. [2023-08-30 10:30:15,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37588028169014087 [2023-08-30 10:30:15,730 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2135 transitions. [2023-08-30 10:30:15,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2135 transitions. [2023-08-30 10:30:15,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:15,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2135 transitions. [2023-08-30 10:30:15,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 213.5) internal successors, (2135), 10 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:15,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 568.0) internal successors, (6248), 11 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:15,741 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 568.0) internal successors, (6248), 11 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:15,741 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 697 flow. Second operand 10 states and 2135 transitions. [2023-08-30 10:30:15,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 202 transitions, 1690 flow [2023-08-30 10:30:15,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 202 transitions, 1640 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 10:30:15,766 INFO L231 Difference]: Finished difference. Result has 99 places, 102 transitions, 1068 flow [2023-08-30 10:30:15,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1068, PETRI_PLACES=99, PETRI_TRANSITIONS=102} [2023-08-30 10:30:15,767 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 15 predicate places. [2023-08-30 10:30:15,767 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 102 transitions, 1068 flow [2023-08-30 10:30:15,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 200.4) internal successors, (3006), 15 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:15,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:15,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:15,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:30:15,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:15,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:15,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:15,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1117585619, now seen corresponding path program 1 times [2023-08-30 10:30:15,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:15,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802332672] [2023-08-30 10:30:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:15,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:16,167 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 10:30:16,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:16,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802332672] [2023-08-30 10:30:16,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802332672] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:16,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192872969] [2023-08-30 10:30:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:16,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:16,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:16,169 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 10:30:16,198 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 10:30:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:16,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 10:30:16,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:16,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:16,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:16,665 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:30:16,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:30:16,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:16,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:16,756 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:30:16,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:30:16,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:16,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:30:17,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:17,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:30:17,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-30 10:30:18,069 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 10:30:18,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:18,129 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 10:30:18,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192872969] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:18,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:18,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 10:30:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135923609] [2023-08-30 10:30:18,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:18,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:30:18,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:18,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:30:18,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-08-30 10:30:18,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 568 [2023-08-30 10:30:18,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 102 transitions, 1068 flow. Second operand has 14 states, 14 states have (on average 223.0) internal successors, (3122), 14 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:18,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:18,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 568 [2023-08-30 10:30:18,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:19,894 INFO L130 PetriNetUnfolder]: 2166/4196 cut-off events. [2023-08-30 10:30:19,894 INFO L131 PetriNetUnfolder]: For 20670/20673 co-relation queries the response was YES. [2023-08-30 10:30:19,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17564 conditions, 4196 events. 2166/4196 cut-off events. For 20670/20673 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 29752 event pairs, 445 based on Foata normal form. 112/4250 useless extension candidates. Maximal degree in co-relation 17538. Up to 1693 conditions per place. [2023-08-30 10:30:19,917 INFO L137 encePairwiseOnDemand]: 551/568 looper letters, 193 selfloop transitions, 140 changer transitions 36/376 dead transitions. [2023-08-30 10:30:19,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 376 transitions, 3942 flow [2023-08-30 10:30:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 10:30:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 10:30:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4879 transitions. [2023-08-30 10:30:19,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409037558685446 [2023-08-30 10:30:19,927 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4879 transitions. [2023-08-30 10:30:19,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4879 transitions. [2023-08-30 10:30:19,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:19,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4879 transitions. [2023-08-30 10:30:19,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 232.33333333333334) internal successors, (4879), 21 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:19,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 568.0) internal successors, (12496), 22 states have internal predecessors, (12496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:19,950 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 568.0) internal successors, (12496), 22 states have internal predecessors, (12496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:19,950 INFO L175 Difference]: Start difference. First operand has 99 places, 102 transitions, 1068 flow. Second operand 21 states and 4879 transitions. [2023-08-30 10:30:19,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 376 transitions, 3942 flow [2023-08-30 10:30:19,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 376 transitions, 3831 flow, removed 43 selfloop flow, removed 3 redundant places. [2023-08-30 10:30:20,003 INFO L231 Difference]: Finished difference. Result has 126 places, 211 transitions, 2889 flow [2023-08-30 10:30:20,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2889, PETRI_PLACES=126, PETRI_TRANSITIONS=211} [2023-08-30 10:30:20,004 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 42 predicate places. [2023-08-30 10:30:20,004 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 211 transitions, 2889 flow [2023-08-30 10:30:20,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 223.0) internal successors, (3122), 14 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:20,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:20,005 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:20,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 10:30:20,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:20,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:20,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1561012527, now seen corresponding path program 1 times [2023-08-30 10:30:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:20,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201712230] [2023-08-30 10:30:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:20,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:20,358 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 10:30:20,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:20,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201712230] [2023-08-30 10:30:20,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201712230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:20,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:20,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:30:20,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520754927] [2023-08-30 10:30:20,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:20,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:30:20,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:20,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:30:20,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:30:20,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 568 [2023-08-30 10:30:20,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 211 transitions, 2889 flow. Second operand has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:20,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:20,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 568 [2023-08-30 10:30:20,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:20,968 INFO L130 PetriNetUnfolder]: 1764/3739 cut-off events. [2023-08-30 10:30:20,968 INFO L131 PetriNetUnfolder]: For 25699/25699 co-relation queries the response was YES. [2023-08-30 10:30:20,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17686 conditions, 3739 events. 1764/3739 cut-off events. For 25699/25699 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 27715 event pairs, 411 based on Foata normal form. 175/3824 useless extension candidates. Maximal degree in co-relation 17647. Up to 2232 conditions per place. [2023-08-30 10:30:20,995 INFO L137 encePairwiseOnDemand]: 554/568 looper letters, 216 selfloop transitions, 14 changer transitions 27/263 dead transitions. [2023-08-30 10:30:20,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 263 transitions, 3771 flow [2023-08-30 10:30:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:30:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:30:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1011 transitions. [2023-08-30 10:30:20,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449823943661972 [2023-08-30 10:30:20,997 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1011 transitions. [2023-08-30 10:30:20,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1011 transitions. [2023-08-30 10:30:20,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:20,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1011 transitions. [2023-08-30 10:30:20,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:21,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:21,001 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:21,001 INFO L175 Difference]: Start difference. First operand has 126 places, 211 transitions, 2889 flow. Second operand 4 states and 1011 transitions. [2023-08-30 10:30:21,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 263 transitions, 3771 flow [2023-08-30 10:30:21,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 263 transitions, 3513 flow, removed 111 selfloop flow, removed 9 redundant places. [2023-08-30 10:30:21,083 INFO L231 Difference]: Finished difference. Result has 114 places, 159 transitions, 1856 flow [2023-08-30 10:30:21,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1856, PETRI_PLACES=114, PETRI_TRANSITIONS=159} [2023-08-30 10:30:21,083 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2023-08-30 10:30:21,084 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 159 transitions, 1856 flow [2023-08-30 10:30:21,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:21,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:21,084 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:21,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 10:30:21,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:21,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:21,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1246247712, now seen corresponding path program 2 times [2023-08-30 10:30:21,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:21,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212882697] [2023-08-30 10:30:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:21,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:30:21,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:21,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212882697] [2023-08-30 10:30:21,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212882697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:21,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691582743] [2023-08-30 10:30:21,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:30:21,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:21,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:21,289 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 10:30:21,313 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 10:30:21,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:30:21,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:30:21,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 10:30:21,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:21,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:21,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:21,875 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:30:21,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:30:21,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:21,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:21,944 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:30:21,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:30:22,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:22,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:30:22,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:22,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:30:23,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-30 10:30:24,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:24,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-30 10:30:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:30:24,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:24,417 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_573 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_573) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648))) is different from false [2023-08-30 10:30:24,433 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 Int) (v_ArrVal_573 (Array Int Int))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store (select |c_#memory_int| |c_~#A~0.base|) |c_~#A~0.offset| v_ArrVal_572)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_573) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)) (< v_ArrVal_572 (+ |c_t_funThread2of2ForFork0_#t~post7#1| 1)))) is different from false [2023-08-30 10:30:24,439 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 Int) (v_ArrVal_573 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#A~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store .cse0 |c_~#A~0.offset| v_ArrVal_572)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_573) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)) (< v_ArrVal_572 (+ (select .cse0 |c_~#A~0.offset|) 1))))) is different from false [2023-08-30 10:30:24,480 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 Int) (v_ArrVal_570 (Array Int Int)) (v_ArrVal_573 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_570))) (let ((.cse1 (select .cse0 |c_~#A~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#A~0.base| (store .cse1 |c_~#A~0.offset| v_ArrVal_572)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_573) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)) (< v_ArrVal_572 (+ 1 (select .cse1 |c_~#A~0.offset|))))))) is different from false [2023-08-30 10:30:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-30 10:30:24,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691582743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:24,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:24,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 13 [2023-08-30 10:30:24,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119273970] [2023-08-30 10:30:24,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:24,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:30:24,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:24,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:30:24,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=80, Unknown=4, NotChecked=84, Total=210 [2023-08-30 10:30:24,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 568 [2023-08-30 10:30:24,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 159 transitions, 1856 flow. Second operand has 15 states, 15 states have (on average 200.93333333333334) internal successors, (3014), 15 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:24,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:24,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 568 [2023-08-30 10:30:24,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:25,397 INFO L130 PetriNetUnfolder]: 1710/3653 cut-off events. [2023-08-30 10:30:25,397 INFO L131 PetriNetUnfolder]: For 22036/22073 co-relation queries the response was YES. [2023-08-30 10:30:25,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17826 conditions, 3653 events. 1710/3653 cut-off events. For 22036/22073 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 26850 event pairs, 566 based on Foata normal form. 17/3586 useless extension candidates. Maximal degree in co-relation 17794. Up to 1962 conditions per place. [2023-08-30 10:30:25,416 INFO L137 encePairwiseOnDemand]: 554/568 looper letters, 118 selfloop transitions, 65 changer transitions 24/214 dead transitions. [2023-08-30 10:30:25,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 214 transitions, 2541 flow [2023-08-30 10:30:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:30:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:30:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1692 transitions. [2023-08-30 10:30:25,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37235915492957744 [2023-08-30 10:30:25,418 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1692 transitions. [2023-08-30 10:30:25,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1692 transitions. [2023-08-30 10:30:25,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:25,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1692 transitions. [2023-08-30 10:30:25,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 211.5) internal successors, (1692), 8 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:25,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 568.0) internal successors, (5112), 9 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:25,423 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 568.0) internal successors, (5112), 9 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:25,423 INFO L175 Difference]: Start difference. First operand has 114 places, 159 transitions, 1856 flow. Second operand 8 states and 1692 transitions. [2023-08-30 10:30:25,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 214 transitions, 2541 flow [2023-08-30 10:30:25,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 214 transitions, 2503 flow, removed 19 selfloop flow, removed 0 redundant places. [2023-08-30 10:30:25,464 INFO L231 Difference]: Finished difference. Result has 121 places, 150 transitions, 1957 flow [2023-08-30 10:30:25,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1957, PETRI_PLACES=121, PETRI_TRANSITIONS=150} [2023-08-30 10:30:25,465 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 37 predicate places. [2023-08-30 10:30:25,465 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 150 transitions, 1957 flow [2023-08-30 10:30:25,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 200.93333333333334) internal successors, (3014), 15 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:25,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:25,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:25,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 10:30:25,666 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,SelfDestructingSolverStorable22 [2023-08-30 10:30:25,666 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:25,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:25,667 INFO L85 PathProgramCache]: Analyzing trace with hash -968637783, now seen corresponding path program 1 times [2023-08-30 10:30:25,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:25,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586927548] [2023-08-30 10:30:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:25,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:25,785 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 10:30:25,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:25,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586927548] [2023-08-30 10:30:25,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586927548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:25,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:25,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:30:25,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200737016] [2023-08-30 10:30:25,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:25,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:30:25,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:25,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:30:25,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:30:25,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 568 [2023-08-30 10:30:25,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 150 transitions, 1957 flow. Second operand has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:25,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:25,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 568 [2023-08-30 10:30:25,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:26,009 INFO L130 PetriNetUnfolder]: 228/727 cut-off events. [2023-08-30 10:30:26,009 INFO L131 PetriNetUnfolder]: For 5287/5299 co-relation queries the response was YES. [2023-08-30 10:30:26,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 727 events. 228/727 cut-off events. For 5287/5299 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4317 event pairs, 61 based on Foata normal form. 82/809 useless extension candidates. Maximal degree in co-relation 3756. Up to 353 conditions per place. [2023-08-30 10:30:26,012 INFO L137 encePairwiseOnDemand]: 558/568 looper letters, 93 selfloop transitions, 17 changer transitions 24/140 dead transitions. [2023-08-30 10:30:26,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 140 transitions, 1900 flow [2023-08-30 10:30:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:30:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:30:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 983 transitions. [2023-08-30 10:30:26,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326584507042254 [2023-08-30 10:30:26,014 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 983 transitions. [2023-08-30 10:30:26,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 983 transitions. [2023-08-30 10:30:26,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:26,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 983 transitions. [2023-08-30 10:30:26,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:26,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:26,016 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 568.0) internal successors, (2840), 5 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:26,016 INFO L175 Difference]: Start difference. First operand has 121 places, 150 transitions, 1957 flow. Second operand 4 states and 983 transitions. [2023-08-30 10:30:26,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 140 transitions, 1900 flow [2023-08-30 10:30:26,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 140 transitions, 1570 flow, removed 54 selfloop flow, removed 19 redundant places. [2023-08-30 10:30:26,026 INFO L231 Difference]: Finished difference. Result has 102 places, 80 transitions, 749 flow [2023-08-30 10:30:26,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=749, PETRI_PLACES=102, PETRI_TRANSITIONS=80} [2023-08-30 10:30:26,027 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 18 predicate places. [2023-08-30 10:30:26,027 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 80 transitions, 749 flow [2023-08-30 10:30:26,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:26,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:26,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:26,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 10:30:26,028 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:26,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash 497220308, now seen corresponding path program 1 times [2023-08-30 10:30:26,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:26,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948477350] [2023-08-30 10:30:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:26,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:26,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:26,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948477350] [2023-08-30 10:30:26,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948477350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:26,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060305933] [2023-08-30 10:30:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:26,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:26,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:26,365 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:30:26,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:30:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:26,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:30:26,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:26,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:26,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:26,827 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:30:26,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:30:26,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:26,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:26,852 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:30:26,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:30:26,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:30:27,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:30:27,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:30:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:27,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:27,230 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_670 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_670) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483646)) is different from false [2023-08-30 10:30:27,244 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_670 (Array Int Int)) (v_ArrVal_668 Int)) (or (<= (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store (select |c_#memory_int| |c_~#A~0.base|) |c_~#A~0.offset| v_ArrVal_668)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_670) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483646) (< |c_t_funThread1of2ForFork0_#t~post10#1| (+ v_ArrVal_668 1)))) is different from false [2023-08-30 10:30:27,252 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_670 (Array Int Int)) (v_ArrVal_668 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#A~0.base|))) (or (<= (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store .cse0 |c_~#A~0.offset| v_ArrVal_668)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_670) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483646) (< (select .cse0 |c_~#A~0.offset|) (+ v_ArrVal_668 1))))) is different from false [2023-08-30 10:30:27,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:30:27,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-30 10:30:27,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-08-30 10:30:27,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 10:30:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:30:27,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060305933] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:27,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:27,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2023-08-30 10:30:27,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417362787] [2023-08-30 10:30:27,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:27,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:30:27,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:27,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:30:27,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=222, Unknown=3, NotChecked=96, Total=380 [2023-08-30 10:30:27,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 568 [2023-08-30 10:30:27,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 80 transitions, 749 flow. Second operand has 20 states, 20 states have (on average 189.75) internal successors, (3795), 20 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:27,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:27,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 568 [2023-08-30 10:30:27,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:32,164 INFO L130 PetriNetUnfolder]: 180/590 cut-off events. [2023-08-30 10:30:32,164 INFO L131 PetriNetUnfolder]: For 3083/3091 co-relation queries the response was YES. [2023-08-30 10:30:32,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2882 conditions, 590 events. 180/590 cut-off events. For 3083/3091 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3392 event pairs, 32 based on Foata normal form. 6/596 useless extension candidates. Maximal degree in co-relation 2854. Up to 191 conditions per place. [2023-08-30 10:30:32,167 INFO L137 encePairwiseOnDemand]: 557/568 looper letters, 100 selfloop transitions, 47 changer transitions 4/158 dead transitions. [2023-08-30 10:30:32,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 158 transitions, 1728 flow [2023-08-30 10:30:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:30:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:30:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3091 transitions. [2023-08-30 10:30:32,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340118838028169 [2023-08-30 10:30:32,170 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3091 transitions. [2023-08-30 10:30:32,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3091 transitions. [2023-08-30 10:30:32,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:32,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3091 transitions. [2023-08-30 10:30:32,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 193.1875) internal successors, (3091), 16 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:32,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 568.0) internal successors, (9656), 17 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:32,178 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 568.0) internal successors, (9656), 17 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:32,178 INFO L175 Difference]: Start difference. First operand has 102 places, 80 transitions, 749 flow. Second operand 16 states and 3091 transitions. [2023-08-30 10:30:32,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 158 transitions, 1728 flow [2023-08-30 10:30:32,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 158 transitions, 1648 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-30 10:30:32,187 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 1030 flow [2023-08-30 10:30:32,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1030, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2023-08-30 10:30:32,187 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2023-08-30 10:30:32,187 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 1030 flow [2023-08-30 10:30:32,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 189.75) internal successors, (3795), 20 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:32,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:32,188 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:32,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:30:32,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 10:30:32,388 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:32,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:32,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1696451755, now seen corresponding path program 1 times [2023-08-30 10:30:32,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:32,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298126901] [2023-08-30 10:30:32,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:32,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:32,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:32,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298126901] [2023-08-30 10:30:32,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298126901] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:32,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257992472] [2023-08-30 10:30:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:32,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:32,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:32,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:30:32,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 10:30:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:32,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:30:32,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:33,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:33,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:33,170 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:30:33,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:30:33,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:33,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:33,203 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:30:33,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:30:33,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:30:33,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:30:33,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:30:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:33,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:33,667 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_742 Int) (v_ArrVal_743 (Array Int Int))) (or (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store (select |c_#memory_int| |c_~#A~0.base|) |c_~#A~0.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_743) |c_~#A~0.base|) |c_~#A~0.offset|))) (< (+ v_ArrVal_742 1) |c_t_funThread1of2ForFork0_#t~post10#1|))) is different from false [2023-08-30 10:30:33,674 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_742 Int) (v_ArrVal_743 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#A~0.base|))) (or (< (+ v_ArrVal_742 1) (select .cse0 |c_~#A~0.offset|)) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store .cse0 |c_~#A~0.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_743) |c_~#A~0.base|) |c_~#A~0.offset|)))))) is different from false [2023-08-30 10:30:33,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:30:33,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-30 10:30:33,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-08-30 10:30:33,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-30 10:30:33,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:33,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257992472] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:33,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:33,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 10:30:33,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014885362] [2023-08-30 10:30:33,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:33,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:30:33,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:33,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:30:33,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=231, Unknown=3, NotChecked=66, Total=380 [2023-08-30 10:30:33,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 568 [2023-08-30 10:30:33,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 1030 flow. Second operand has 20 states, 20 states have (on average 195.0) internal successors, (3900), 20 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:33,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:33,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 568 [2023-08-30 10:30:33,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:34,281 INFO L130 PetriNetUnfolder]: 178/579 cut-off events. [2023-08-30 10:30:34,281 INFO L131 PetriNetUnfolder]: For 3305/3308 co-relation queries the response was YES. [2023-08-30 10:30:34,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 579 events. 178/579 cut-off events. For 3305/3308 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3258 event pairs, 54 based on Foata normal form. 6/583 useless extension candidates. Maximal degree in co-relation 2842. Up to 121 conditions per place. [2023-08-30 10:30:34,285 INFO L137 encePairwiseOnDemand]: 558/568 looper letters, 85 selfloop transitions, 37 changer transitions 4/133 dead transitions. [2023-08-30 10:30:34,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 133 transitions, 1523 flow [2023-08-30 10:30:34,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:30:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:30:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2372 transitions. [2023-08-30 10:30:34,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34800469483568075 [2023-08-30 10:30:34,287 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2372 transitions. [2023-08-30 10:30:34,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2372 transitions. [2023-08-30 10:30:34,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:34,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2372 transitions. [2023-08-30 10:30:34,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 197.66666666666666) internal successors, (2372), 12 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:34,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 568.0) internal successors, (7384), 13 states have internal predecessors, (7384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:34,295 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 568.0) internal successors, (7384), 13 states have internal predecessors, (7384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:34,295 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 1030 flow. Second operand 12 states and 2372 transitions. [2023-08-30 10:30:34,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 133 transitions, 1523 flow [2023-08-30 10:30:34,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 133 transitions, 1479 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 10:30:34,304 INFO L231 Difference]: Finished difference. Result has 114 places, 102 transitions, 1058 flow [2023-08-30 10:30:34,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1058, PETRI_PLACES=114, PETRI_TRANSITIONS=102} [2023-08-30 10:30:34,305 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2023-08-30 10:30:34,305 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 1058 flow [2023-08-30 10:30:34,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 195.0) internal successors, (3900), 20 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:34,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:34,306 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:34,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:30:34,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 10:30:34,513 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:34,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:34,514 INFO L85 PathProgramCache]: Analyzing trace with hash 24439489, now seen corresponding path program 1 times [2023-08-30 10:30:34,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:34,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772815231] [2023-08-30 10:30:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:34,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:34,599 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 10:30:34,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:34,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772815231] [2023-08-30 10:30:34,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772815231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:34,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:34,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:30:34,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966340791] [2023-08-30 10:30:34,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:34,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:30:34,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:34,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:30:34,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:30:34,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 568 [2023-08-30 10:30:34,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 1058 flow. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:34,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:34,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 568 [2023-08-30 10:30:34,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:34,821 INFO L130 PetriNetUnfolder]: 174/574 cut-off events. [2023-08-30 10:30:34,822 INFO L131 PetriNetUnfolder]: For 3374/3389 co-relation queries the response was YES. [2023-08-30 10:30:34,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2871 conditions, 574 events. 174/574 cut-off events. For 3374/3389 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3273 event pairs, 74 based on Foata normal form. 6/578 useless extension candidates. Maximal degree in co-relation 2846. Up to 339 conditions per place. [2023-08-30 10:30:34,825 INFO L137 encePairwiseOnDemand]: 557/568 looper letters, 80 selfloop transitions, 33 changer transitions 0/120 dead transitions. [2023-08-30 10:30:34,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 1421 flow [2023-08-30 10:30:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:30:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:30:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1254 transitions. [2023-08-30 10:30:34,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415492957746479 [2023-08-30 10:30:34,827 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1254 transitions. [2023-08-30 10:30:34,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1254 transitions. [2023-08-30 10:30:34,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:34,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1254 transitions. [2023-08-30 10:30:34,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.8) internal successors, (1254), 5 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:34,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:34,831 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 568.0) internal successors, (3408), 6 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:34,831 INFO L175 Difference]: Start difference. First operand has 114 places, 102 transitions, 1058 flow. Second operand 5 states and 1254 transitions. [2023-08-30 10:30:34,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 1421 flow [2023-08-30 10:30:34,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 120 transitions, 1263 flow, removed 23 selfloop flow, removed 11 redundant places. [2023-08-30 10:30:34,840 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 1086 flow [2023-08-30 10:30:34,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1086, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2023-08-30 10:30:34,841 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2023-08-30 10:30:34,841 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 1086 flow [2023-08-30 10:30:34,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:34,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:34,841 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:34,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 10:30:34,842 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:34,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:34,842 INFO L85 PathProgramCache]: Analyzing trace with hash -51959968, now seen corresponding path program 1 times [2023-08-30 10:30:34,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:34,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992333234] [2023-08-30 10:30:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:34,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:34,955 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 10:30:34,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:34,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992333234] [2023-08-30 10:30:34,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992333234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:34,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:34,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:30:34,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584762765] [2023-08-30 10:30:34,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:34,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:30:34,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:34,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:30:34,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:30:35,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 568 [2023-08-30 10:30:35,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 1086 flow. Second operand has 5 states, 5 states have (on average 245.8) internal successors, (1229), 5 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:35,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:35,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 568 [2023-08-30 10:30:35,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:35,255 INFO L130 PetriNetUnfolder]: 174/577 cut-off events. [2023-08-30 10:30:35,255 INFO L131 PetriNetUnfolder]: For 2996/3007 co-relation queries the response was YES. [2023-08-30 10:30:35,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2788 conditions, 577 events. 174/577 cut-off events. For 2996/3007 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3286 event pairs, 77 based on Foata normal form. 6/581 useless extension candidates. Maximal degree in co-relation 2766. Up to 329 conditions per place. [2023-08-30 10:30:35,258 INFO L137 encePairwiseOnDemand]: 556/568 looper letters, 81 selfloop transitions, 41 changer transitions 0/129 dead transitions. [2023-08-30 10:30:35,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 129 transitions, 1478 flow [2023-08-30 10:30:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:30:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:30:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1752 transitions. [2023-08-30 10:30:35,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44064386317907445 [2023-08-30 10:30:35,261 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1752 transitions. [2023-08-30 10:30:35,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1752 transitions. [2023-08-30 10:30:35,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:35,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1752 transitions. [2023-08-30 10:30:35,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 250.28571428571428) internal successors, (1752), 7 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:35,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 568.0) internal successors, (4544), 8 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:35,266 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 568.0) internal successors, (4544), 8 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:35,266 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 1086 flow. Second operand 7 states and 1752 transitions. [2023-08-30 10:30:35,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 129 transitions, 1478 flow [2023-08-30 10:30:35,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 129 transitions, 1474 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 10:30:35,274 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 1250 flow [2023-08-30 10:30:35,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1250, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2023-08-30 10:30:35,275 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 34 predicate places. [2023-08-30 10:30:35,275 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 1250 flow [2023-08-30 10:30:35,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.8) internal successors, (1229), 5 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:35,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:35,276 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:35,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 10:30:35,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:35,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1211097541, now seen corresponding path program 2 times [2023-08-30 10:30:35,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:35,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159390603] [2023-08-30 10:30:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:35,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:30:35,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159390603] [2023-08-30 10:30:35,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159390603] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110842046] [2023-08-30 10:30:35,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:30:35,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:35,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:35,534 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:30:35,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:30:35,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:30:35,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:30:35,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:30:35,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:35,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:35,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:35,963 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:30:35,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:30:35,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:35,991 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:30:35,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:30:36,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:30:36,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:30:36,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:30:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:30:36,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:30:36,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110842046] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:36,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:30:36,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 10:30:36,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271998312] [2023-08-30 10:30:36,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:36,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:30:36,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:36,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:30:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:30:36,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 568 [2023-08-30 10:30:36,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 1250 flow. Second operand has 7 states, 7 states have (on average 243.85714285714286) internal successors, (1707), 7 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:36,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:36,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 568 [2023-08-30 10:30:36,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:36,752 INFO L130 PetriNetUnfolder]: 174/573 cut-off events. [2023-08-30 10:30:36,752 INFO L131 PetriNetUnfolder]: For 3667/3708 co-relation queries the response was YES. [2023-08-30 10:30:36,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 573 events. 174/573 cut-off events. For 3667/3708 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3227 event pairs, 56 based on Foata normal form. 6/577 useless extension candidates. Maximal degree in co-relation 2895. Up to 227 conditions per place. [2023-08-30 10:30:36,755 INFO L137 encePairwiseOnDemand]: 560/568 looper letters, 85 selfloop transitions, 27 changer transitions 2/121 dead transitions. [2023-08-30 10:30:36,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 1531 flow [2023-08-30 10:30:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:30:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:30:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1733 transitions. [2023-08-30 10:30:36,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43586519114688127 [2023-08-30 10:30:36,759 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1733 transitions. [2023-08-30 10:30:36,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1733 transitions. [2023-08-30 10:30:36,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:36,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1733 transitions. [2023-08-30 10:30:36,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 247.57142857142858) internal successors, (1733), 7 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:36,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 568.0) internal successors, (4544), 8 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:36,764 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 568.0) internal successors, (4544), 8 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:36,764 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 1250 flow. Second operand 7 states and 1733 transitions. [2023-08-30 10:30:36,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 1531 flow [2023-08-30 10:30:36,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 1457 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-30 10:30:36,775 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 1200 flow [2023-08-30 10:30:36,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1200, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2023-08-30 10:30:36,776 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 34 predicate places. [2023-08-30 10:30:36,776 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 1200 flow [2023-08-30 10:30:36,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 243.85714285714286) internal successors, (1707), 7 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:36,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:36,777 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:36,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 10:30:36,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 10:30:36,982 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:36,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:36,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1254890354, now seen corresponding path program 2 times [2023-08-30 10:30:36,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:36,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759660264] [2023-08-30 10:30:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:36,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:37,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759660264] [2023-08-30 10:30:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759660264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670200795] [2023-08-30 10:30:37,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:30:37,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:37,238 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:30:37,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:30:37,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:30:37,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:30:37,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:30:37,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:37,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:37,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:37,596 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:30:37,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:30:37,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:37,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:37,621 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:30:37,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:30:37,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:30:37,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:30:37,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:30:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:30:37,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:30:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670200795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:37,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:30:37,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 10:30:37,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812723102] [2023-08-30 10:30:37,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:37,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:30:37,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:30:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:30:38,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 568 [2023-08-30 10:30:38,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 1200 flow. Second operand has 7 states, 7 states have (on average 244.85714285714286) internal successors, (1714), 7 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:38,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:38,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 568 [2023-08-30 10:30:38,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:38,339 INFO L130 PetriNetUnfolder]: 174/572 cut-off events. [2023-08-30 10:30:38,339 INFO L131 PetriNetUnfolder]: For 3325/3337 co-relation queries the response was YES. [2023-08-30 10:30:38,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 572 events. 174/572 cut-off events. For 3325/3337 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3217 event pairs, 56 based on Foata normal form. 2/572 useless extension candidates. Maximal degree in co-relation 2836. Up to 218 conditions per place. [2023-08-30 10:30:38,341 INFO L137 encePairwiseOnDemand]: 559/568 looper letters, 82 selfloop transitions, 32 changer transitions 1/122 dead transitions. [2023-08-30 10:30:38,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 122 transitions, 1510 flow [2023-08-30 10:30:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:30:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:30:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1497 transitions. [2023-08-30 10:30:38,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392605633802817 [2023-08-30 10:30:38,343 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1497 transitions. [2023-08-30 10:30:38,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1497 transitions. [2023-08-30 10:30:38,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:38,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1497 transitions. [2023-08-30 10:30:38,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:38,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 568.0) internal successors, (3976), 7 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:38,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 568.0) internal successors, (3976), 7 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:38,347 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 1200 flow. Second operand 6 states and 1497 transitions. [2023-08-30 10:30:38,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 122 transitions, 1510 flow [2023-08-30 10:30:38,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 122 transitions, 1435 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-30 10:30:38,357 INFO L231 Difference]: Finished difference. Result has 117 places, 107 transitions, 1176 flow [2023-08-30 10:30:38,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1176, PETRI_PLACES=117, PETRI_TRANSITIONS=107} [2023-08-30 10:30:38,358 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 33 predicate places. [2023-08-30 10:30:38,358 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 107 transitions, 1176 flow [2023-08-30 10:30:38,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 244.85714285714286) internal successors, (1714), 7 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:38,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:38,359 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:38,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 10:30:38,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:38,563 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:38,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:38,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1864071860, now seen corresponding path program 1 times [2023-08-30 10:30:38,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:38,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708391926] [2023-08-30 10:30:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:38,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:38,704 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 10:30:38,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:38,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708391926] [2023-08-30 10:30:38,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708391926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:38,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:38,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:30:38,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551433184] [2023-08-30 10:30:38,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:38,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:30:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:38,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:30:38,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:30:38,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 568 [2023-08-30 10:30:38,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 107 transitions, 1176 flow. Second operand has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:38,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:38,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 568 [2023-08-30 10:30:38,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:39,107 INFO L130 PetriNetUnfolder]: 214/690 cut-off events. [2023-08-30 10:30:39,107 INFO L131 PetriNetUnfolder]: For 3726/3741 co-relation queries the response was YES. [2023-08-30 10:30:39,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3384 conditions, 690 events. 214/690 cut-off events. For 3726/3741 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4220 event pairs, 76 based on Foata normal form. 6/694 useless extension candidates. Maximal degree in co-relation 3358. Up to 388 conditions per place. [2023-08-30 10:30:39,110 INFO L137 encePairwiseOnDemand]: 558/568 looper letters, 92 selfloop transitions, 38 changer transitions 6/143 dead transitions. [2023-08-30 10:30:39,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 143 transitions, 1747 flow [2023-08-30 10:30:39,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:30:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:30:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2196 transitions. [2023-08-30 10:30:39,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295774647887324 [2023-08-30 10:30:39,113 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2196 transitions. [2023-08-30 10:30:39,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2196 transitions. [2023-08-30 10:30:39,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:39,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2196 transitions. [2023-08-30 10:30:39,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:39,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 568.0) internal successors, (5680), 10 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:39,119 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 568.0) internal successors, (5680), 10 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:39,120 INFO L175 Difference]: Start difference. First operand has 117 places, 107 transitions, 1176 flow. Second operand 9 states and 2196 transitions. [2023-08-30 10:30:39,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 143 transitions, 1747 flow [2023-08-30 10:30:39,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 143 transitions, 1677 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:30:39,132 INFO L231 Difference]: Finished difference. Result has 125 places, 116 transitions, 1346 flow [2023-08-30 10:30:39,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1346, PETRI_PLACES=125, PETRI_TRANSITIONS=116} [2023-08-30 10:30:39,133 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 41 predicate places. [2023-08-30 10:30:39,133 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 116 transitions, 1346 flow [2023-08-30 10:30:39,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:39,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:39,134 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:39,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 10:30:39,134 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:39,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:39,135 INFO L85 PathProgramCache]: Analyzing trace with hash 390899596, now seen corresponding path program 1 times [2023-08-30 10:30:39,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:39,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504797623] [2023-08-30 10:30:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:39,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:39,280 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 10:30:39,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:39,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504797623] [2023-08-30 10:30:39,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504797623] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:39,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:39,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:30:39,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416558878] [2023-08-30 10:30:39,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:39,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:30:39,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:39,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:30:39,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:30:39,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 568 [2023-08-30 10:30:39,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 116 transitions, 1346 flow. Second operand has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:39,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:39,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 568 [2023-08-30 10:30:39,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:39,619 INFO L130 PetriNetUnfolder]: 207/677 cut-off events. [2023-08-30 10:30:39,619 INFO L131 PetriNetUnfolder]: For 4102/4119 co-relation queries the response was YES. [2023-08-30 10:30:39,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3459 conditions, 677 events. 207/677 cut-off events. For 4102/4119 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4146 event pairs, 89 based on Foata normal form. 6/681 useless extension candidates. Maximal degree in co-relation 3428. Up to 378 conditions per place. [2023-08-30 10:30:39,623 INFO L137 encePairwiseOnDemand]: 557/568 looper letters, 80 selfloop transitions, 32 changer transitions 13/132 dead transitions. [2023-08-30 10:30:39,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 132 transitions, 1675 flow [2023-08-30 10:30:39,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:30:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:30:39,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2188 transitions. [2023-08-30 10:30:39,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42801251956181535 [2023-08-30 10:30:39,626 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2188 transitions. [2023-08-30 10:30:39,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2188 transitions. [2023-08-30 10:30:39,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:39,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2188 transitions. [2023-08-30 10:30:39,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 243.11111111111111) internal successors, (2188), 9 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:39,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 568.0) internal successors, (5680), 10 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:39,633 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 568.0) internal successors, (5680), 10 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:39,633 INFO L175 Difference]: Start difference. First operand has 125 places, 116 transitions, 1346 flow. Second operand 9 states and 2188 transitions. [2023-08-30 10:30:39,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 132 transitions, 1675 flow [2023-08-30 10:30:39,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 132 transitions, 1652 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 10:30:39,647 INFO L231 Difference]: Finished difference. Result has 132 places, 100 transitions, 1172 flow [2023-08-30 10:30:39,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1172, PETRI_PLACES=132, PETRI_TRANSITIONS=100} [2023-08-30 10:30:39,648 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 48 predicate places. [2023-08-30 10:30:39,648 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 100 transitions, 1172 flow [2023-08-30 10:30:39,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.83333333333334) internal successors, (1445), 6 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:39,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:39,648 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:39,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 10:30:39,648 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:39,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:39,649 INFO L85 PathProgramCache]: Analyzing trace with hash 687746040, now seen corresponding path program 2 times [2023-08-30 10:30:39,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:39,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691389545] [2023-08-30 10:30:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:39,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:39,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691389545] [2023-08-30 10:30:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691389545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108028046] [2023-08-30 10:30:39,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:30:39,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:39,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:39,877 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:30:39,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 10:30:39,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:30:39,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:30:39,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:30:39,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:40,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:40,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:40,365 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:30:40,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:30:40,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:40,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:40,398 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:30:40,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:30:40,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:30:40,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:30:40,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:30:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:30:40,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:30:40,806 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1120 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1120) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648))) is different from false [2023-08-30 10:30:40,826 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:30:40,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-30 10:30:40,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-08-30 10:30:40,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-30 10:30:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:30:40,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108028046] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:30:40,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:30:40,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-30 10:30:40,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914131329] [2023-08-30 10:30:40,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:30:40,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:30:40,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:30:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=138, Unknown=1, NotChecked=24, Total=210 [2023-08-30 10:30:40,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 568 [2023-08-30 10:30:40,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 100 transitions, 1172 flow. Second operand has 15 states, 15 states have (on average 195.53333333333333) internal successors, (2933), 15 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:40,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:40,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 568 [2023-08-30 10:30:40,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:41,231 INFO L130 PetriNetUnfolder]: 195/617 cut-off events. [2023-08-30 10:30:41,232 INFO L131 PetriNetUnfolder]: For 3992/3997 co-relation queries the response was YES. [2023-08-30 10:30:41,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3174 conditions, 617 events. 195/617 cut-off events. For 3992/3997 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3579 event pairs, 76 based on Foata normal form. 8/623 useless extension candidates. Maximal degree in co-relation 3141. Up to 185 conditions per place. [2023-08-30 10:30:41,234 INFO L137 encePairwiseOnDemand]: 559/568 looper letters, 38 selfloop transitions, 6 changer transitions 70/120 dead transitions. [2023-08-30 10:30:41,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 120 transitions, 1544 flow [2023-08-30 10:30:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:30:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:30:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1782 transitions. [2023-08-30 10:30:41,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485915492957746 [2023-08-30 10:30:41,237 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1782 transitions. [2023-08-30 10:30:41,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1782 transitions. [2023-08-30 10:30:41,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:41,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1782 transitions. [2023-08-30 10:30:41,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:41,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 568.0) internal successors, (5680), 10 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:41,244 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 568.0) internal successors, (5680), 10 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:41,244 INFO L175 Difference]: Start difference. First operand has 132 places, 100 transitions, 1172 flow. Second operand 9 states and 1782 transitions. [2023-08-30 10:30:41,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 120 transitions, 1544 flow [2023-08-30 10:30:41,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 120 transitions, 1458 flow, removed 10 selfloop flow, removed 13 redundant places. [2023-08-30 10:30:41,257 INFO L231 Difference]: Finished difference. Result has 120 places, 47 transitions, 440 flow [2023-08-30 10:30:41,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=440, PETRI_PLACES=120, PETRI_TRANSITIONS=47} [2023-08-30 10:30:41,258 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 36 predicate places. [2023-08-30 10:30:41,258 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 47 transitions, 440 flow [2023-08-30 10:30:41,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 195.53333333333333) internal successors, (2933), 15 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:41,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:41,259 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:41,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 10:30:41,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-30 10:30:41,464 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:30:41,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash -892378019, now seen corresponding path program 2 times [2023-08-30 10:30:41,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:41,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521173959] [2023-08-30 10:30:41,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:41,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:30:41,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:41,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521173959] [2023-08-30 10:30:41,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521173959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:30:41,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552926889] [2023-08-30 10:30:41,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:30:41,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:41,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:30:41,833 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:30:41,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:30:41,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:30:41,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:30:41,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:30:41,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:30:42,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:42,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:42,318 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 10:30:42,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-30 10:30:42,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:42,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:30:42,392 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 10:30:42,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-30 10:30:42,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:30:42,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:30:42,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:30:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:30:42,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:30:42,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552926889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:42,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:30:42,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-30 10:30:42,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195720063] [2023-08-30 10:30:42,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:42,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:30:42,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:30:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-08-30 10:30:43,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 568 [2023-08-30 10:30:43,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 47 transitions, 440 flow. Second operand has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:43,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:43,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 568 [2023-08-30 10:30:43,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:30:43,330 INFO L130 PetriNetUnfolder]: 57/228 cut-off events. [2023-08-30 10:30:43,330 INFO L131 PetriNetUnfolder]: For 1137/1145 co-relation queries the response was YES. [2023-08-30 10:30:43,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 228 events. 57/228 cut-off events. For 1137/1145 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 925 event pairs, 33 based on Foata normal form. 4/232 useless extension candidates. Maximal degree in co-relation 1032. Up to 90 conditions per place. [2023-08-30 10:30:43,331 INFO L137 encePairwiseOnDemand]: 560/568 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2023-08-30 10:30:43,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 50 transitions, 526 flow [2023-08-30 10:30:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:30:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:30:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1683 transitions. [2023-08-30 10:30:43,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232897384305835 [2023-08-30 10:30:43,333 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1683 transitions. [2023-08-30 10:30:43,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1683 transitions. [2023-08-30 10:30:43,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:30:43,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1683 transitions. [2023-08-30 10:30:43,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 240.42857142857142) internal successors, (1683), 7 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:43,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 568.0) internal successors, (4544), 8 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:43,336 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 568.0) internal successors, (4544), 8 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:43,337 INFO L175 Difference]: Start difference. First operand has 120 places, 47 transitions, 440 flow. Second operand 7 states and 1683 transitions. [2023-08-30 10:30:43,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 50 transitions, 526 flow [2023-08-30 10:30:43,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 50 transitions, 429 flow, removed 7 selfloop flow, removed 23 redundant places. [2023-08-30 10:30:43,339 INFO L231 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2023-08-30 10:30:43,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2023-08-30 10:30:43,339 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -7 predicate places. [2023-08-30 10:30:43,340 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2023-08-30 10:30:43,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:43,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-08-30 10:30:43,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-08-30 10:30:43,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-08-30 10:30:43,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-08-30 10:30:43,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-08-30 10:30:43,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-08-30 10:30:43,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-08-30 10:30:43,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-08-30 10:30:43,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-08-30 10:30:43,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-08-30 10:30:43,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-08-30 10:30:43,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:30:43,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:30:43,545 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:30:43,545 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:30:43,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 297 transitions, 612 flow [2023-08-30 10:30:43,594 INFO L130 PetriNetUnfolder]: 72/487 cut-off events. [2023-08-30 10:30:43,594 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:30:43,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 487 events. 72/487 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1896 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 310. Up to 12 conditions per place. [2023-08-30 10:30:43,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 297 transitions, 612 flow [2023-08-30 10:30:43,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 291 transitions, 600 flow [2023-08-30 10:30:43,600 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:30:43,600 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 291 transitions, 600 flow [2023-08-30 10:30:43,600 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 291 transitions, 600 flow [2023-08-30 10:30:43,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 291 transitions, 600 flow [2023-08-30 10:30:43,641 INFO L130 PetriNetUnfolder]: 71/481 cut-off events. [2023-08-30 10:30:43,641 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:30:43,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 481 events. 71/481 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1893 event pairs, 0 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2023-08-30 10:30:43,653 INFO L119 LiptonReduction]: Number of co-enabled transitions 32896 [2023-08-30 10:30:50,599 INFO L134 LiptonReduction]: Checked pairs total: 86406 [2023-08-30 10:30:50,599 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-30 10:30:50,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:30:50,601 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;@6842ef53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:30:50,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:30:50,608 INFO L130 PetriNetUnfolder]: 33/115 cut-off events. [2023-08-30 10:30:50,608 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:30:50,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:50,608 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 10:30:50,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:30:50,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:50,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1701250946, now seen corresponding path program 1 times [2023-08-30 10:30:50,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:50,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435397137] [2023-08-30 10:30:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:30:50,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:30:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:30:50,635 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:30:50,636 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:30:50,636 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:30:50,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 10:30:50,636 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:30:50,637 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:30:50,637 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:30:50,637 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 10:30:50,658 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:30:50,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 363 transitions, 756 flow [2023-08-30 10:30:50,738 INFO L130 PetriNetUnfolder]: 106/705 cut-off events. [2023-08-30 10:30:50,738 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:30:50,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 705 events. 106/705 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3070 event pairs, 1 based on Foata normal form. 0/543 useless extension candidates. Maximal degree in co-relation 495. Up to 16 conditions per place. [2023-08-30 10:30:50,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 363 transitions, 756 flow [2023-08-30 10:30:50,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 361 transitions, 752 flow [2023-08-30 10:30:50,755 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:30:50,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 361 transitions, 752 flow [2023-08-30 10:30:50,755 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 361 transitions, 752 flow [2023-08-30 10:30:50,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 361 transitions, 752 flow [2023-08-30 10:30:50,818 INFO L130 PetriNetUnfolder]: 105/703 cut-off events. [2023-08-30 10:30:50,818 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:30:50,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 703 events. 105/703 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3084 event pairs, 1 based on Foata normal form. 0/542 useless extension candidates. Maximal degree in co-relation 493. Up to 16 conditions per place. [2023-08-30 10:30:50,848 INFO L119 LiptonReduction]: Number of co-enabled transitions 62208 [2023-08-30 10:30:56,973 INFO L134 LiptonReduction]: Checked pairs total: 153065 [2023-08-30 10:30:56,973 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-08-30 10:30:56,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:30:56,974 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;@6842ef53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:30:56,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-30 10:30:56,974 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 10:30:56,974 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:30:56,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:30:56,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 10:30:56,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:30:56,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:30:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2714, now seen corresponding path program 1 times [2023-08-30 10:30:56,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:30:56,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184507182] [2023-08-30 10:30:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:30:56,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:30:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:30:56,979 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 10:30:56,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:30:56,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184507182] [2023-08-30 10:30:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184507182] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:30:56,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:30:56,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 10:30:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15067868] [2023-08-30 10:30:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:30:56,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 10:30:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:30:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 10:30:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 10:30:56,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 685 [2023-08-30 10:30:56,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 149 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 307.5) internal successors, (615), 2 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:30:56,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:30:56,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 685 [2023-08-30 10:30:56,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:31:37,637 INFO L130 PetriNetUnfolder]: 547470/756695 cut-off events. [2023-08-30 10:31:37,637 INFO L131 PetriNetUnfolder]: For 5097/5097 co-relation queries the response was YES. [2023-08-30 10:31:38,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480913 conditions, 756695 events. 547470/756695 cut-off events. For 5097/5097 co-relation queries the response was YES. Maximal size of possible extension queue 19565. Compared 6195697 event pairs, 527315 based on Foata normal form. 94989/643203 useless extension candidates. Maximal degree in co-relation 235214. Up to 721177 conditions per place. [2023-08-30 10:31:41,274 INFO L137 encePairwiseOnDemand]: 639/685 looper letters, 89 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2023-08-30 10:31:41,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 103 transitions, 414 flow [2023-08-30 10:31:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 10:31:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 10:31:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 749 transitions. [2023-08-30 10:31:41,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467153284671533 [2023-08-30 10:31:41,276 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 749 transitions. [2023-08-30 10:31:41,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 749 transitions. [2023-08-30 10:31:41,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:31:41,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 749 transitions. [2023-08-30 10:31:41,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 374.5) internal successors, (749), 2 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:41,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 685.0) internal successors, (2055), 3 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:41,278 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 685.0) internal successors, (2055), 3 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:41,278 INFO L175 Difference]: Start difference. First operand has 107 places, 149 transitions, 328 flow. Second operand 2 states and 749 transitions. [2023-08-30 10:31:41,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 103 transitions, 414 flow [2023-08-30 10:31:41,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 103 transitions, 414 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:31:41,283 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 236 flow [2023-08-30 10:31:41,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=236, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2023-08-30 10:31:41,283 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -3 predicate places. [2023-08-30 10:31:41,283 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 236 flow [2023-08-30 10:31:41,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 307.5) internal successors, (615), 2 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:41,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:31:41,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:31:41,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 10:31:41,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:31:41,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:31:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1707399536, now seen corresponding path program 1 times [2023-08-30 10:31:41,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:31:41,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700106503] [2023-08-30 10:31:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:41,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:31:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:41,310 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 10:31:41,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:31:41,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700106503] [2023-08-30 10:31:41,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700106503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:31:41,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:31:41,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:31:41,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420415441] [2023-08-30 10:31:41,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:31:41,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:31:41,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:31:41,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:31:41,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:31:41,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 685 [2023-08-30 10:31:41,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:31:41,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:31:41,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 685 [2023-08-30 10:31:41,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:32:24,344 INFO L130 PetriNetUnfolder]: 548106/756736 cut-off events. [2023-08-30 10:32:24,344 INFO L131 PetriNetUnfolder]: For 5117/5117 co-relation queries the response was YES. [2023-08-30 10:32:25,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481002 conditions, 756736 events. 548106/756736 cut-off events. For 5117/5117 co-relation queries the response was YES. Maximal size of possible extension queue 19161. Compared 6171424 event pairs, 345751 based on Foata normal form. 0/548451 useless extension candidates. Maximal degree in co-relation 1480996. Up to 721058 conditions per place. [2023-08-30 10:32:28,226 INFO L137 encePairwiseOnDemand]: 680/685 looper letters, 108 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-08-30 10:32:28,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 124 transitions, 498 flow [2023-08-30 10:32:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:32:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:32:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1022 transitions. [2023-08-30 10:32:28,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.497323600973236 [2023-08-30 10:32:28,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1022 transitions. [2023-08-30 10:32:28,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1022 transitions. [2023-08-30 10:32:28,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:32:28,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1022 transitions. [2023-08-30 10:32:28,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:28,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:28,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:28,231 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 236 flow. Second operand 3 states and 1022 transitions. [2023-08-30 10:32:28,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 124 transitions, 498 flow [2023-08-30 10:32:28,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 124 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:32:28,236 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 252 flow [2023-08-30 10:32:28,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2023-08-30 10:32:28,236 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 0 predicate places. [2023-08-30 10:32:28,237 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 252 flow [2023-08-30 10:32:28,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:28,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:32:28,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:32:28,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 10:32:28,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:32:28,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:32:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash 522336218, now seen corresponding path program 1 times [2023-08-30 10:32:28,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:32:28,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300315163] [2023-08-30 10:32:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:32:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:32:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:32:28,479 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 10:32:28,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:32:28,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300315163] [2023-08-30 10:32:28,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300315163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:32:28,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:32:28,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:32:28,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265862013] [2023-08-30 10:32:28,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:32:28,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:32:28,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:32:28,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:32:28,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:32:28,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 685 [2023-08-30 10:32:28,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:32:28,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:32:28,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 685 [2023-08-30 10:32:28,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:33:26,233 INFO L130 PetriNetUnfolder]: 686891/965449 cut-off events. [2023-08-30 10:33:26,233 INFO L131 PetriNetUnfolder]: For 25307/25307 co-relation queries the response was YES. [2023-08-30 10:33:28,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1939388 conditions, 965449 events. 686891/965449 cut-off events. For 25307/25307 co-relation queries the response was YES. Maximal size of possible extension queue 27123. Compared 8449675 event pairs, 200932 based on Foata normal form. 2964/749931 useless extension candidates. Maximal degree in co-relation 1939380. Up to 661770 conditions per place. [2023-08-30 10:33:31,505 INFO L137 encePairwiseOnDemand]: 659/685 looper letters, 201 selfloop transitions, 18 changer transitions 0/233 dead transitions. [2023-08-30 10:33:31,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 233 transitions, 1004 flow [2023-08-30 10:33:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:33:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:33:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1407 transitions. [2023-08-30 10:33:31,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135036496350365 [2023-08-30 10:33:31,507 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1407 transitions. [2023-08-30 10:33:31,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1407 transitions. [2023-08-30 10:33:31,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:33:31,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1407 transitions. [2023-08-30 10:33:31,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 351.75) internal successors, (1407), 4 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:33:31,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 685.0) internal successors, (3425), 5 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:33:31,509 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 685.0) internal successors, (3425), 5 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:33:31,510 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 252 flow. Second operand 4 states and 1407 transitions. [2023-08-30 10:33:31,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 233 transitions, 1004 flow [2023-08-30 10:33:31,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 233 transitions, 1001 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:33:31,520 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 418 flow [2023-08-30 10:33:31,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2023-08-30 10:33:31,520 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 5 predicate places. [2023-08-30 10:33:31,520 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 418 flow [2023-08-30 10:33:31,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:33:31,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:33:31,521 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:33:31,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 10:33:31,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:33:31,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:33:31,522 INFO L85 PathProgramCache]: Analyzing trace with hash 781760685, now seen corresponding path program 1 times [2023-08-30 10:33:31,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:33:31,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179094705] [2023-08-30 10:33:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:33:31,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:33:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:33:31,546 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 10:33:31,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:33:31,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179094705] [2023-08-30 10:33:31,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179094705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:33:31,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:33:31,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:33:31,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378478770] [2023-08-30 10:33:31,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:33:31,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:33:31,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:33:31,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:33:31,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:33:31,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 685 [2023-08-30 10:33:31,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:33:31,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:33:31,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 685 [2023-08-30 10:33:31,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:34:36,602 INFO L130 PetriNetUnfolder]: 664896/939192 cut-off events. [2023-08-30 10:34:36,602 INFO L131 PetriNetUnfolder]: For 260639/260679 co-relation queries the response was YES. [2023-08-30 10:34:39,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224495 conditions, 939192 events. 664896/939192 cut-off events. For 260639/260679 co-relation queries the response was YES. Maximal size of possible extension queue 26282. Compared 8257418 event pairs, 587335 based on Foata normal form. 0/789841 useless extension candidates. Maximal degree in co-relation 2224485. Up to 900824 conditions per place. [2023-08-30 10:34:42,549 INFO L137 encePairwiseOnDemand]: 683/685 looper letters, 105 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2023-08-30 10:34:42,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 120 transitions, 626 flow [2023-08-30 10:34:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:34:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:34:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 998 transitions. [2023-08-30 10:34:42,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4856447688564477 [2023-08-30 10:34:42,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 998 transitions. [2023-08-30 10:34:42,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 998 transitions. [2023-08-30 10:34:42,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:34:42,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 998 transitions. [2023-08-30 10:34:42,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:34:42,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:34:42,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:34:42,553 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 418 flow. Second operand 3 states and 998 transitions. [2023-08-30 10:34:42,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 120 transitions, 626 flow [2023-08-30 10:34:42,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 120 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:34:42,691 INFO L231 Difference]: Finished difference. Result has 113 places, 120 transitions, 416 flow [2023-08-30 10:34:42,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=113, PETRI_TRANSITIONS=120} [2023-08-30 10:34:42,691 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 6 predicate places. [2023-08-30 10:34:42,691 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 120 transitions, 416 flow [2023-08-30 10:34:42,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:34:42,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:34:42,692 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:34:42,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 10:34:42,692 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:34:42,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:34:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash 781760790, now seen corresponding path program 1 times [2023-08-30 10:34:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:34:42,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78568090] [2023-08-30 10:34:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:34:42,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:34:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:34:42,712 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 10:34:42,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:34:42,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78568090] [2023-08-30 10:34:42,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78568090] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:34:42,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:34:42,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:34:42,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59928582] [2023-08-30 10:34:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:34:42,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:34:42,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:34:42,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:34:42,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:34:42,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 685 [2023-08-30 10:34:42,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 120 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:34:42,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:34:42,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 685 [2023-08-30 10:34:42,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:35:42,131 INFO L130 PetriNetUnfolder]: 638029/897216 cut-off events. [2023-08-30 10:35:42,131 INFO L131 PetriNetUnfolder]: For 262806/262814 co-relation queries the response was YES. [2023-08-30 10:35:44,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135488 conditions, 897216 events. 638029/897216 cut-off events. For 262806/262814 co-relation queries the response was YES. Maximal size of possible extension queue 25203. Compared 7961833 event pairs, 122157 based on Foata normal form. 1/760570 useless extension candidates. Maximal degree in co-relation 2135477. Up to 815895 conditions per place. [2023-08-30 10:35:47,858 INFO L137 encePairwiseOnDemand]: 681/685 looper letters, 167 selfloop transitions, 5 changer transitions 0/186 dead transitions. [2023-08-30 10:35:47,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 186 transitions, 994 flow [2023-08-30 10:35:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:35:47,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:35:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1049 transitions. [2023-08-30 10:35:47,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104622871046228 [2023-08-30 10:35:47,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1049 transitions. [2023-08-30 10:35:47,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1049 transitions. [2023-08-30 10:35:47,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:35:47,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1049 transitions. [2023-08-30 10:35:47,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.6666666666667) internal successors, (1049), 3 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:48,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:48,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:48,010 INFO L175 Difference]: Start difference. First operand has 113 places, 120 transitions, 416 flow. Second operand 3 states and 1049 transitions. [2023-08-30 10:35:48,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 186 transitions, 994 flow [2023-08-30 10:35:48,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 186 transitions, 993 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:35:48,057 INFO L231 Difference]: Finished difference. Result has 114 places, 120 transitions, 432 flow [2023-08-30 10:35:48,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=114, PETRI_TRANSITIONS=120} [2023-08-30 10:35:48,058 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 7 predicate places. [2023-08-30 10:35:48,058 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 120 transitions, 432 flow [2023-08-30 10:35:48,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:48,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:35:48,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:35:48,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 10:35:48,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:35:48,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:35:48,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1505295704, now seen corresponding path program 1 times [2023-08-30 10:35:48,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:35:48,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743119653] [2023-08-30 10:35:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:35:48,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:35:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:35:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:35:48,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:35:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743119653] [2023-08-30 10:35:48,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743119653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:35:48,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975864587] [2023-08-30 10:35:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:35:48,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:35:48,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:35:48,113 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:35:48,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:35:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:35:48,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:35:48,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:35:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:35:48,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:35:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:35:48,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975864587] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:35:48,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:35:48,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 10:35:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690253288] [2023-08-30 10:35:48,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:35:48,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:35:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:35:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:35:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:35:48,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 685 [2023-08-30 10:35:48,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 120 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 304.1666666666667) internal successors, (1825), 6 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:48,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:35:48,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 685 [2023-08-30 10:35:48,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:35:54,426 INFO L130 PetriNetUnfolder]: 63634/98528 cut-off events. [2023-08-30 10:35:54,426 INFO L131 PetriNetUnfolder]: For 98205/98265 co-relation queries the response was YES. [2023-08-30 10:35:54,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289287 conditions, 98528 events. 63634/98528 cut-off events. For 98205/98265 co-relation queries the response was YES. Maximal size of possible extension queue 4081. Compared 835997 event pairs, 1868 based on Foata normal form. 8995/98163 useless extension candidates. Maximal degree in co-relation 289276. Up to 63591 conditions per place. [2023-08-30 10:35:54,981 INFO L137 encePairwiseOnDemand]: 682/685 looper letters, 200 selfloop transitions, 4 changer transitions 0/215 dead transitions. [2023-08-30 10:35:54,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 215 transitions, 1193 flow [2023-08-30 10:35:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:35:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:35:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1987 transitions. [2023-08-30 10:35:54,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834549878345499 [2023-08-30 10:35:54,983 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1987 transitions. [2023-08-30 10:35:54,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1987 transitions. [2023-08-30 10:35:54,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:35:54,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1987 transitions. [2023-08-30 10:35:54,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 331.1666666666667) internal successors, (1987), 6 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:54,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 685.0) internal successors, (4795), 7 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:54,987 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 685.0) internal successors, (4795), 7 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:54,987 INFO L175 Difference]: Start difference. First operand has 114 places, 120 transitions, 432 flow. Second operand 6 states and 1987 transitions. [2023-08-30 10:35:54,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 215 transitions, 1193 flow [2023-08-30 10:35:55,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 215 transitions, 1178 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 10:35:55,030 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 334 flow [2023-08-30 10:35:55,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2023-08-30 10:35:55,031 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -15 predicate places. [2023-08-30 10:35:55,031 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 334 flow [2023-08-30 10:35:55,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 304.1666666666667) internal successors, (1825), 6 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:55,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:35:55,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:35:55,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 10:35:55,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:35:55,232 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:35:55,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:35:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash -650375588, now seen corresponding path program 1 times [2023-08-30 10:35:55,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:35:55,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108283343] [2023-08-30 10:35:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:35:55,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:35:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:35:55,326 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 10:35:55,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:35:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108283343] [2023-08-30 10:35:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108283343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:35:55,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:35:55,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:35:55,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777040940] [2023-08-30 10:35:55,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:35:55,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:35:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:35:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:35:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:35:55,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 685 [2023-08-30 10:35:55,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 290.8333333333333) internal successors, (1745), 6 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:35:55,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:35:55,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 685 [2023-08-30 10:35:55,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:36:03,259 INFO L130 PetriNetUnfolder]: 82349/122337 cut-off events. [2023-08-30 10:36:03,259 INFO L131 PetriNetUnfolder]: For 127743/128147 co-relation queries the response was YES. [2023-08-30 10:36:03,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343247 conditions, 122337 events. 82349/122337 cut-off events. For 127743/128147 co-relation queries the response was YES. Maximal size of possible extension queue 4924. Compared 1005612 event pairs, 13810 based on Foata normal form. 960/112933 useless extension candidates. Maximal degree in co-relation 343235. Up to 61015 conditions per place. [2023-08-30 10:36:04,009 INFO L137 encePairwiseOnDemand]: 660/685 looper letters, 278 selfloop transitions, 52 changer transitions 0/341 dead transitions. [2023-08-30 10:36:04,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 341 transitions, 1832 flow [2023-08-30 10:36:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:36:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:36:04,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2932 transitions. [2023-08-30 10:36:04,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47558799675588 [2023-08-30 10:36:04,012 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2932 transitions. [2023-08-30 10:36:04,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2932 transitions. [2023-08-30 10:36:04,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:04,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2932 transitions. [2023-08-30 10:36:04,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 325.77777777777777) internal successors, (2932), 9 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:04,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 685.0) internal successors, (6850), 10 states have internal predecessors, (6850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:04,017 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 685.0) internal successors, (6850), 10 states have internal predecessors, (6850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:04,017 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 334 flow. Second operand 9 states and 2932 transitions. [2023-08-30 10:36:04,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 341 transitions, 1832 flow [2023-08-30 10:36:04,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 341 transitions, 1787 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-30 10:36:04,058 INFO L231 Difference]: Finished difference. Result has 104 places, 125 transitions, 783 flow [2023-08-30 10:36:04,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=783, PETRI_PLACES=104, PETRI_TRANSITIONS=125} [2023-08-30 10:36:04,058 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -3 predicate places. [2023-08-30 10:36:04,058 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 125 transitions, 783 flow [2023-08-30 10:36:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.8333333333333) internal successors, (1745), 6 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:04,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:04,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:36:04,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 10:36:04,059 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:36:04,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash -650375587, now seen corresponding path program 1 times [2023-08-30 10:36:04,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:04,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682636968] [2023-08-30 10:36:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:04,107 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 10:36:04,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:04,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682636968] [2023-08-30 10:36:04,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682636968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:36:04,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:36:04,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:36:04,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977184061] [2023-08-30 10:36:04,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:36:04,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:36:04,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:36:04,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:36:04,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:36:04,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 685 [2023-08-30 10:36:04,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 125 transitions, 783 flow. Second operand has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:04,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:36:04,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 685 [2023-08-30 10:36:04,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:36:16,136 INFO L130 PetriNetUnfolder]: 103538/159144 cut-off events. [2023-08-30 10:36:16,136 INFO L131 PetriNetUnfolder]: For 336905/338241 co-relation queries the response was YES. [2023-08-30 10:36:16,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531516 conditions, 159144 events. 103538/159144 cut-off events. For 336905/338241 co-relation queries the response was YES. Maximal size of possible extension queue 6258. Compared 1420840 event pairs, 29993 based on Foata normal form. 4347/157577 useless extension candidates. Maximal degree in co-relation 531499. Up to 67788 conditions per place. [2023-08-30 10:36:17,361 INFO L137 encePairwiseOnDemand]: 662/685 looper letters, 224 selfloop transitions, 80 changer transitions 0/315 dead transitions. [2023-08-30 10:36:17,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 315 transitions, 2499 flow [2023-08-30 10:36:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:36:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:36:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1651 transitions. [2023-08-30 10:36:17,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.482043795620438 [2023-08-30 10:36:17,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1651 transitions. [2023-08-30 10:36:17,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1651 transitions. [2023-08-30 10:36:17,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:17,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1651 transitions. [2023-08-30 10:36:17,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 330.2) internal successors, (1651), 5 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:17,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 685.0) internal successors, (4110), 6 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:17,367 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 685.0) internal successors, (4110), 6 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:17,367 INFO L175 Difference]: Start difference. First operand has 104 places, 125 transitions, 783 flow. Second operand 5 states and 1651 transitions. [2023-08-30 10:36:17,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 315 transitions, 2499 flow [2023-08-30 10:36:18,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 315 transitions, 2438 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 10:36:18,203 INFO L231 Difference]: Finished difference. Result has 110 places, 190 transitions, 1708 flow [2023-08-30 10:36:18,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1708, PETRI_PLACES=110, PETRI_TRANSITIONS=190} [2023-08-30 10:36:18,203 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 3 predicate places. [2023-08-30 10:36:18,203 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 190 transitions, 1708 flow [2023-08-30 10:36:18,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:18,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:18,204 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:36:18,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 10:36:18,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:36:18,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:18,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1087080296, now seen corresponding path program 1 times [2023-08-30 10:36:18,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:18,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046594720] [2023-08-30 10:36:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:36:18,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:18,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046594720] [2023-08-30 10:36:18,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046594720] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:36:18,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404213642] [2023-08-30 10:36:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:18,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:36:18,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:36:18,306 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:36:18,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:36:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:18,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 10:36:18,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:36:18,622 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 10:36:18,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 288 treesize of output 291 [2023-08-30 10:36:18,652 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-08-30 10:36:18,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 282 treesize of output 289 [2023-08-30 10:36:18,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 267 [2023-08-30 10:36:18,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 153 [2023-08-30 10:36:18,827 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-30 10:36:18,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 79 [2023-08-30 10:36:18,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:36:18,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:36:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:36:18,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:36:18,988 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1395 Int) (v_ArrVal_1397 (Array Int Int))) (or (< v_ArrVal_1395 (+ |c_t_funThread1of3ForFork0_#t~post7#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store (select |c_#memory_int| |c_~#A~0.base|) |c_~#A~0.offset| v_ArrVal_1395)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1397) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)))) is different from false [2023-08-30 10:36:18,997 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1395 Int) (v_ArrVal_1397 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#A~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store .cse0 |c_~#A~0.offset| v_ArrVal_1395)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1397) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)) (< v_ArrVal_1395 (+ (select .cse0 |c_~#A~0.offset|) 1))))) is different from false [2023-08-30 10:36:19,043 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1395 Int) (v_ArrVal_1397 (Array Int Int)) (v_ArrVal_1394 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1394))) (let ((.cse0 (select .cse1 |c_~#A~0.base|))) (or (< v_ArrVal_1395 (+ (select .cse0 |c_~#A~0.offset|) 1)) (< 0 (+ (select (select (store (store .cse1 |c_~#A~0.base| (store .cse0 |c_~#A~0.offset| v_ArrVal_1395)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1397) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)))))) is different from false [2023-08-30 10:36:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:36:19,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404213642] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:36:19,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:36:19,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 14 [2023-08-30 10:36:19,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093294273] [2023-08-30 10:36:19,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:36:19,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 10:36:19,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:36:19,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 10:36:19,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=113, Unknown=3, NotChecked=72, Total=240 [2023-08-30 10:36:19,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 685 [2023-08-30 10:36:19,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 190 transitions, 1708 flow. Second operand has 16 states, 16 states have (on average 245.4375) internal successors, (3927), 16 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:19,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:36:19,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 685 [2023-08-30 10:36:19,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:36:36,819 INFO L130 PetriNetUnfolder]: 116628/178215 cut-off events. [2023-08-30 10:36:36,819 INFO L131 PetriNetUnfolder]: For 670846/670965 co-relation queries the response was YES. [2023-08-30 10:36:37,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699002 conditions, 178215 events. 116628/178215 cut-off events. For 670846/670965 co-relation queries the response was YES. Maximal size of possible extension queue 6885. Compared 1586604 event pairs, 23139 based on Foata normal form. 2247/174123 useless extension candidates. Maximal degree in co-relation 698981. Up to 88814 conditions per place. [2023-08-30 10:36:38,414 INFO L137 encePairwiseOnDemand]: 660/685 looper letters, 456 selfloop transitions, 167 changer transitions 4/637 dead transitions. [2023-08-30 10:36:38,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 637 transitions, 5755 flow [2023-08-30 10:36:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:36:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:36:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3852 transitions. [2023-08-30 10:36:38,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4016684045881126 [2023-08-30 10:36:38,418 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3852 transitions. [2023-08-30 10:36:38,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3852 transitions. [2023-08-30 10:36:38,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:36:38,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3852 transitions. [2023-08-30 10:36:38,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 275.14285714285717) internal successors, (3852), 14 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:38,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 685.0) internal successors, (10275), 15 states have internal predecessors, (10275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:38,427 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 685.0) internal successors, (10275), 15 states have internal predecessors, (10275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:38,427 INFO L175 Difference]: Start difference. First operand has 110 places, 190 transitions, 1708 flow. Second operand 14 states and 3852 transitions. [2023-08-30 10:36:38,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 637 transitions, 5755 flow [2023-08-30 10:36:45,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 637 transitions, 5747 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 10:36:45,222 INFO L231 Difference]: Finished difference. Result has 133 places, 303 transitions, 3803 flow [2023-08-30 10:36:45,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3803, PETRI_PLACES=133, PETRI_TRANSITIONS=303} [2023-08-30 10:36:45,223 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 26 predicate places. [2023-08-30 10:36:45,223 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 303 transitions, 3803 flow [2023-08-30 10:36:45,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 245.4375) internal successors, (3927), 16 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:45,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:36:45,224 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:36:45,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-30 10:36:45,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-08-30 10:36:45,424 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:36:45,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:36:45,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1087080297, now seen corresponding path program 1 times [2023-08-30 10:36:45,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:36:45,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521622962] [2023-08-30 10:36:45,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:45,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:36:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:36:45,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:36:45,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521622962] [2023-08-30 10:36:45,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521622962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:36:45,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525101917] [2023-08-30 10:36:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:36:45,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:36:45,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:36:45,542 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:36:45,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:36:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:36:45,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 10:36:45,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:36:45,815 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 10:36:45,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 288 treesize of output 291 [2023-08-30 10:36:45,844 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 10:36:45,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 276 treesize of output 277 [2023-08-30 10:36:45,873 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-08-30 10:36:45,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 276 treesize of output 283 [2023-08-30 10:36:45,900 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:36:45,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 260 treesize of output 168 [2023-08-30 10:36:45,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:36:46,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:36:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:36:46,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:36:46,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525101917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:36:46,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:36:46,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 10:36:46,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893971811] [2023-08-30 10:36:46,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:36:46,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:36:46,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:36:46,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:36:46,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:36:46,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 685 [2023-08-30 10:36:46,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 303 transitions, 3803 flow. Second operand has 6 states, 6 states have (on average 290.1666666666667) internal successors, (1741), 6 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:36:46,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:36:46,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 685 [2023-08-30 10:36:46,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:37:05,859 INFO L130 PetriNetUnfolder]: 112149/173773 cut-off events. [2023-08-30 10:37:05,859 INFO L131 PetriNetUnfolder]: For 1095872/1096001 co-relation queries the response was YES. [2023-08-30 10:37:07,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765151 conditions, 173773 events. 112149/173773 cut-off events. For 1095872/1096001 co-relation queries the response was YES. Maximal size of possible extension queue 6750. Compared 1576644 event pairs, 49331 based on Foata normal form. 2334/170087 useless extension candidates. Maximal degree in co-relation 765120. Up to 102016 conditions per place. [2023-08-30 10:37:07,969 INFO L137 encePairwiseOnDemand]: 663/685 looper letters, 342 selfloop transitions, 121 changer transitions 0/474 dead transitions. [2023-08-30 10:37:07,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 474 transitions, 6307 flow [2023-08-30 10:37:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:37:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:37:07,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1912 transitions. [2023-08-30 10:37:07,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46520681265206815 [2023-08-30 10:37:07,972 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1912 transitions. [2023-08-30 10:37:07,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1912 transitions. [2023-08-30 10:37:07,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:37:07,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1912 transitions. [2023-08-30 10:37:07,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.6666666666667) internal successors, (1912), 6 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:37:07,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 685.0) internal successors, (4795), 7 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:37:07,978 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 685.0) internal successors, (4795), 7 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:37:07,978 INFO L175 Difference]: Start difference. First operand has 133 places, 303 transitions, 3803 flow. Second operand 6 states and 1912 transitions. [2023-08-30 10:37:07,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 474 transitions, 6307 flow [2023-08-30 10:37:24,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 474 transitions, 6189 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-08-30 10:37:24,624 INFO L231 Difference]: Finished difference. Result has 139 places, 351 transitions, 5058 flow [2023-08-30 10:37:24,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=3596, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5058, PETRI_PLACES=139, PETRI_TRANSITIONS=351} [2023-08-30 10:37:24,624 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 32 predicate places. [2023-08-30 10:37:24,625 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 351 transitions, 5058 flow [2023-08-30 10:37:24,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.1666666666667) internal successors, (1741), 6 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:37:24,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:37:24,625 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:37:24,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 10:37:24,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:37:24,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:37:24,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:37:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash 354524956, now seen corresponding path program 1 times [2023-08-30 10:37:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:37:24,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714792066] [2023-08-30 10:37:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:37:24,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:37:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:37:24,873 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 10:37:24,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:37:24,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714792066] [2023-08-30 10:37:24,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714792066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:37:24,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:37:24,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:37:24,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037295169] [2023-08-30 10:37:24,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:37:24,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:37:24,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:37:24,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:37:24,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:37:24,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 685 [2023-08-30 10:37:24,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 351 transitions, 5058 flow. Second operand has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:37:24,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:37:24,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 685 [2023-08-30 10:37:24,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:37:48,064 INFO L130 PetriNetUnfolder]: 121120/186871 cut-off events. [2023-08-30 10:37:48,065 INFO L131 PetriNetUnfolder]: For 1446972/1451214 co-relation queries the response was YES. [2023-08-30 10:37:49,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864216 conditions, 186871 events. 121120/186871 cut-off events. For 1446972/1451214 co-relation queries the response was YES. Maximal size of possible extension queue 7074. Compared 1699695 event pairs, 33758 based on Foata normal form. 2319/182959 useless extension candidates. Maximal degree in co-relation 864180. Up to 76714 conditions per place. [2023-08-30 10:37:50,202 INFO L137 encePairwiseOnDemand]: 662/685 looper letters, 444 selfloop transitions, 299 changer transitions 0/754 dead transitions. [2023-08-30 10:37:50,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 754 transitions, 11979 flow [2023-08-30 10:37:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:37:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:37:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1653 transitions. [2023-08-30 10:37:50,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826277372262774 [2023-08-30 10:37:50,205 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1653 transitions. [2023-08-30 10:37:50,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1653 transitions. [2023-08-30 10:37:50,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:37:50,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1653 transitions. [2023-08-30 10:37:50,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 330.6) internal successors, (1653), 5 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:37:50,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 685.0) internal successors, (4110), 6 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:37:50,209 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 685.0) internal successors, (4110), 6 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:37:50,209 INFO L175 Difference]: Start difference. First operand has 139 places, 351 transitions, 5058 flow. Second operand 5 states and 1653 transitions. [2023-08-30 10:37:50,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 754 transitions, 11979 flow [2023-08-30 10:38:11,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 754 transitions, 11826 flow, removed 76 selfloop flow, removed 1 redundant places. [2023-08-30 10:38:11,859 INFO L231 Difference]: Finished difference. Result has 146 places, 525 transitions, 9342 flow [2023-08-30 10:38:11,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=4937, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9342, PETRI_PLACES=146, PETRI_TRANSITIONS=525} [2023-08-30 10:38:11,859 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 39 predicate places. [2023-08-30 10:38:11,859 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 525 transitions, 9342 flow [2023-08-30 10:38:11,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:11,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:38:11,860 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:38:11,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-30 10:38:11,860 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:38:11,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:38:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash 354524955, now seen corresponding path program 1 times [2023-08-30 10:38:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:38:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115822457] [2023-08-30 10:38:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:11,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:38:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:11,964 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 10:38:11,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:38:11,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115822457] [2023-08-30 10:38:11,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115822457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:38:11,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097302741] [2023-08-30 10:38:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:38:11,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:38:11,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:38:11,969 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:38:11,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 10:38:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:38:12,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 10:38:12,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:38:12,345 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 10:38:12,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 288 treesize of output 291 [2023-08-30 10:38:12,366 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 10:38:12,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 276 treesize of output 277 [2023-08-30 10:38:12,403 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-08-30 10:38:12,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 276 treesize of output 283 [2023-08-30 10:38:12,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 153 [2023-08-30 10:38:12,591 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-30 10:38:12,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 79 [2023-08-30 10:38:12,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:38:12,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:38:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:38:12,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:38:12,727 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1520 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1520) |c_~#A~0.base|) |c_~#A~0.offset|)))) is different from false [2023-08-30 10:38:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 10:38:12,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097302741] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:38:12,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:38:12,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 13 [2023-08-30 10:38:12,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431764540] [2023-08-30 10:38:12,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:38:12,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:38:12,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:38:12,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:38:12,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=131, Unknown=1, NotChecked=24, Total=210 [2023-08-30 10:38:12,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 685 [2023-08-30 10:38:12,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 525 transitions, 9342 flow. Second operand has 15 states, 15 states have (on average 245.6) internal successors, (3684), 15 states have internal predecessors, (3684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:12,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:38:12,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 685 [2023-08-30 10:38:12,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:38:48,240 INFO L130 PetriNetUnfolder]: 147961/225989 cut-off events. [2023-08-30 10:38:48,240 INFO L131 PetriNetUnfolder]: For 2450617/2450846 co-relation queries the response was YES. [2023-08-30 10:38:50,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1157571 conditions, 225989 events. 147961/225989 cut-off events. For 2450617/2450846 co-relation queries the response was YES. Maximal size of possible extension queue 8661. Compared 2051024 event pairs, 24218 based on Foata normal form. 4693/223958 useless extension candidates. Maximal degree in co-relation 1157532. Up to 97265 conditions per place. [2023-08-30 10:38:51,291 INFO L137 encePairwiseOnDemand]: 659/685 looper letters, 859 selfloop transitions, 737 changer transitions 9/1615 dead transitions. [2023-08-30 10:38:51,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1615 transitions, 26286 flow [2023-08-30 10:38:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 10:38:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 10:38:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5773 transitions. [2023-08-30 10:38:51,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40132082029892246 [2023-08-30 10:38:51,295 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5773 transitions. [2023-08-30 10:38:51,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5773 transitions. [2023-08-30 10:38:51,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:38:51,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5773 transitions. [2023-08-30 10:38:51,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 274.9047619047619) internal successors, (5773), 21 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:51,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 685.0) internal successors, (15070), 22 states have internal predecessors, (15070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:51,305 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 685.0) internal successors, (15070), 22 states have internal predecessors, (15070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:38:51,306 INFO L175 Difference]: Start difference. First operand has 146 places, 525 transitions, 9342 flow. Second operand 21 states and 5773 transitions. [2023-08-30 10:38:51,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 1615 transitions, 26286 flow [2023-08-30 10:39:41,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 1615 transitions, 26286 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:39:41,830 INFO L231 Difference]: Finished difference. Result has 180 places, 1056 transitions, 22201 flow [2023-08-30 10:39:41,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=9222, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=22201, PETRI_PLACES=180, PETRI_TRANSITIONS=1056} [2023-08-30 10:39:41,831 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 73 predicate places. [2023-08-30 10:39:41,831 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 1056 transitions, 22201 flow [2023-08-30 10:39:41,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 245.6) internal successors, (3684), 15 states have internal predecessors, (3684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:41,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:39:41,831 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:39:41,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 10:39:42,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:42,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:39:42,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:39:42,033 INFO L85 PathProgramCache]: Analyzing trace with hash 716630759, now seen corresponding path program 1 times [2023-08-30 10:39:42,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:39:42,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161722503] [2023-08-30 10:39:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:42,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:39:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:39:42,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:39:42,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161722503] [2023-08-30 10:39:42,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161722503] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:39:42,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534355231] [2023-08-30 10:39:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:39:42,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:39:42,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:39:42,100 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:39:42,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 10:39:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:39:42,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:39:42,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:39:42,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:39:42,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:39:42,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:39:42,299 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 10:39:42,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:39:42,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534355231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:39:42,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:39:42,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-30 10:39:42,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080371373] [2023-08-30 10:39:42,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:39:42,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:39:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:39:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:39:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:39:42,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 685 [2023-08-30 10:39:42,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 1056 transitions, 22201 flow. Second operand has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:42,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:39:42,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 685 [2023-08-30 10:39:42,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:39:53,609 INFO L130 PetriNetUnfolder]: 30361/50246 cut-off events. [2023-08-30 10:39:53,610 INFO L131 PetriNetUnfolder]: For 548838/548838 co-relation queries the response was YES. [2023-08-30 10:39:54,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236183 conditions, 50246 events. 30361/50246 cut-off events. For 548838/548838 co-relation queries the response was YES. Maximal size of possible extension queue 1617. Compared 425072 event pairs, 6839 based on Foata normal form. 8339/54684 useless extension candidates. Maximal degree in co-relation 236130. Up to 34595 conditions per place. [2023-08-30 10:39:54,280 INFO L137 encePairwiseOnDemand]: 666/685 looper letters, 241 selfloop transitions, 31 changer transitions 0/281 dead transitions. [2023-08-30 10:39:54,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 281 transitions, 5226 flow [2023-08-30 10:39:54,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:39:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:39:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1187 transitions. [2023-08-30 10:39:54,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332116788321168 [2023-08-30 10:39:54,282 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1187 transitions. [2023-08-30 10:39:54,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1187 transitions. [2023-08-30 10:39:54,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:39:54,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1187 transitions. [2023-08-30 10:39:54,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.75) internal successors, (1187), 4 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 10:39:54,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 685.0) internal successors, (3425), 5 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:54,286 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 685.0) internal successors, (3425), 5 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:39:54,286 INFO L175 Difference]: Start difference. First operand has 180 places, 1056 transitions, 22201 flow. Second operand 4 states and 1187 transitions. [2023-08-30 10:39:54,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 281 transitions, 5226 flow [2023-08-30 10:40:00,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 281 transitions, 4673 flow, removed 245 selfloop flow, removed 18 redundant places. [2023-08-30 10:40:00,877 INFO L231 Difference]: Finished difference. Result has 155 places, 255 transitions, 3951 flow [2023-08-30 10:40:00,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3951, PETRI_PLACES=155, PETRI_TRANSITIONS=255} [2023-08-30 10:40:00,878 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 48 predicate places. [2023-08-30 10:40:00,878 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 255 transitions, 3951 flow [2023-08-30 10:40:00,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:00,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:00,878 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:00,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 10:40:01,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:01,084 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:40:01,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:01,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1759157862, now seen corresponding path program 2 times [2023-08-30 10:40:01,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:01,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312524745] [2023-08-30 10:40:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:01,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:40:01,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:01,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312524745] [2023-08-30 10:40:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312524745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:01,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:01,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:40:01,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694137713] [2023-08-30 10:40:01,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:01,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:40:01,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:01,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:40:01,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:40:01,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 685 [2023-08-30 10:40:01,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 255 transitions, 3951 flow. Second operand has 6 states, 6 states have (on average 290.1666666666667) internal successors, (1741), 6 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:01,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:01,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 685 [2023-08-30 10:40:01,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:07,313 INFO L130 PetriNetUnfolder]: 29514/49783 cut-off events. [2023-08-30 10:40:07,313 INFO L131 PetriNetUnfolder]: For 467566/467844 co-relation queries the response was YES. [2023-08-30 10:40:07,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227401 conditions, 49783 events. 29514/49783 cut-off events. For 467566/467844 co-relation queries the response was YES. Maximal size of possible extension queue 1679. Compared 430003 event pairs, 17388 based on Foata normal form. 194/46129 useless extension candidates. Maximal degree in co-relation 227363. Up to 32440 conditions per place. [2023-08-30 10:40:07,804 INFO L137 encePairwiseOnDemand]: 667/685 looper letters, 231 selfloop transitions, 69 changer transitions 1/312 dead transitions. [2023-08-30 10:40:07,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 312 transitions, 5183 flow [2023-08-30 10:40:07,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:40:07,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:40:07,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1548 transitions. [2023-08-30 10:40:07,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45197080291970804 [2023-08-30 10:40:07,805 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1548 transitions. [2023-08-30 10:40:07,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1548 transitions. [2023-08-30 10:40:07,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:07,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1548 transitions. [2023-08-30 10:40:07,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.6) internal successors, (1548), 5 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:07,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 685.0) internal successors, (4110), 6 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:07,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 685.0) internal successors, (4110), 6 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:07,808 INFO L175 Difference]: Start difference. First operand has 155 places, 255 transitions, 3951 flow. Second operand 5 states and 1548 transitions. [2023-08-30 10:40:07,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 312 transitions, 5183 flow Killed by 15