./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations 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/pthread-ext/09_fmaxsym.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bf02669c3dd381b0745ab8dce392518dfe698af15c4a94bd383f1dab20a8c06 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:26:23,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:26:23,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:26:23,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:26:23,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:26:23,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:26:23,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:26:23,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:26:23,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:26:23,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:26:23,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:26:23,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:26:23,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:26:23,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:26:23,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:26:23,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:26:23,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:26:23,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:26:23,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:26:23,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:26:23,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:26:23,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:26:23,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:26:23,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:26:23,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:26:23,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:26:23,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:26:23,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:26:23,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:26:23,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:26:23,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:26:23,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:26:23,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:26:23,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:26:23,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:26:23,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:26:23,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:26:23,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:26:23,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:26:23,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:26:23,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:26:23,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:26:23,555 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:26:23,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:26:23,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:26:23,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:26:23,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:26:23,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:26:23,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:26:23,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:26:23,558 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:26:23,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:26:23,559 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:26:23,560 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:26:23,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:26:23,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:26:23,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:26:23,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:26:23,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:26:23,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:26:23,561 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:26:23,561 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:26:23,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:26:23,562 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:26:23,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:26:23,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:26:23,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:26:23,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:26:23,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:26:23,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:26:23,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:26:23,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:26:23,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:26:23,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:26:23,564 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:26:23,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:26:23,564 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:26:23,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:26:23,565 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:26:23,565 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf02669c3dd381b0745ab8dce392518dfe698af15c4a94bd383f1dab20a8c06 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:26:23,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:26:23,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:26:23,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:26:23,921 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:26:23,924 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:26:23,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym.i [2023-08-30 08:26:25,058 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:26:25,354 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:26:25,355 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i [2023-08-30 08:26:25,367 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be78bfa42/748481687901465a80cf549536910b29/FLAG2010768dc [2023-08-30 08:26:25,383 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be78bfa42/748481687901465a80cf549536910b29 [2023-08-30 08:26:25,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:26:25,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:26:25,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:26:25,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:26:25,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:26:25,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556f87ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25, skipping insertion in model container [2023-08-30 08:26:25,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:26:25,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:26:25,767 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i[30422,30435] [2023-08-30 08:26:25,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:26:25,789 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:26:25,851 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i[30422,30435] [2023-08-30 08:26:25,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:26:25,908 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:26:25,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25 WrapperNode [2023-08-30 08:26:25,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:26:25,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:26:25,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:26:25,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:26:25,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,966 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2023-08-30 08:26:25,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:26:25,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:26:25,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:26:25,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:26:25,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:25,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:26:25,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:26:25,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:26:25,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:26:25,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (1/1) ... [2023-08-30 08:26:26,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:26:26,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:26,026 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 08:26:26,028 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 08:26:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:26:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 08:26:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 08:26:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:26:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:26:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:26:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:26:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:26:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:26:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:26:26,058 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 08:26:26,152 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:26:26,154 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:26:26,379 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:26:26,424 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:26:26,424 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 08:26:26,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:26:26 BoogieIcfgContainer [2023-08-30 08:26:26,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:26:26,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:26:26,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:26:26,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:26:26,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:26:25" (1/3) ... [2023-08-30 08:26:26,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed9018c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:26:26, skipping insertion in model container [2023-08-30 08:26:26,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:25" (2/3) ... [2023-08-30 08:26:26,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed9018c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:26:26, skipping insertion in model container [2023-08-30 08:26:26,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:26:26" (3/3) ... [2023-08-30 08:26:26,441 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2023-08-30 08:26:26,447 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:26:26,456 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:26:26,456 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 08:26:26,456 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:26:26,548 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:26:26,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:26,656 INFO L130 PetriNetUnfolder]: 7/89 cut-off events. [2023-08-30 08:26:26,656 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:26,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 7/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2023-08-30 08:26:26,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:26,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:26,669 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:26,684 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:26,687 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:26,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:26,737 INFO L130 PetriNetUnfolder]: 7/89 cut-off events. [2023-08-30 08:26:26,738 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:26,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 7/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2023-08-30 08:26:26,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 1170 [2023-08-30 08:26:30,202 INFO L134 LiptonReduction]: Checked pairs total: 1289 [2023-08-30 08:26:30,202 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-30 08:26:30,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:26:30,217 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;@21a0af86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:30,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 08:26:30,224 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-30 08:26:30,224 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:30,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:30,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:26:30,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-08-30 08:26:30,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:30,229 INFO L85 PathProgramCache]: Analyzing trace with hash 365808118, now seen corresponding path program 1 times [2023-08-30 08:26:30,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:30,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095852288] [2023-08-30 08:26:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:30,565 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 08:26:30,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:30,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095852288] [2023-08-30 08:26:30,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095852288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:30,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:30,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:30,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598746389] [2023-08-30 08:26:30,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:30,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:30,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:30,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:30,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 08:26:30,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:30,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:30,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 08:26:30,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:30,657 INFO L130 PetriNetUnfolder]: 11/29 cut-off events. [2023-08-30 08:26:30,657 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:30,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 29 events. 11/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 57 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 50. Up to 23 conditions per place. [2023-08-30 08:26:30,659 INFO L137 encePairwiseOnDemand]: 162/166 looper letters, 9 selfloop transitions, 1 changer transitions 1/12 dead transitions. [2023-08-30 08:26:30,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 12 transitions, 51 flow [2023-08-30 08:26:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:30,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2023-08-30 08:26:30,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42771084337349397 [2023-08-30 08:26:30,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2023-08-30 08:26:30,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2023-08-30 08:26:30,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:30,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2023-08-30 08:26:30,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:30,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:30,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:30,685 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 31 flow. Second operand 3 states and 213 transitions. [2023-08-30 08:26:30,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 12 transitions, 51 flow [2023-08-30 08:26:30,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 51 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:30,688 INFO L231 Difference]: Finished difference. Result has 14 places, 9 transitions, 25 flow [2023-08-30 08:26:30,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=25, PETRI_PLACES=14, PETRI_TRANSITIONS=9} [2023-08-30 08:26:30,692 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2023-08-30 08:26:30,693 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 9 transitions, 25 flow [2023-08-30 08:26:30,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:30,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:30,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:26:30,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:26:30,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-08-30 08:26:30,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:30,695 INFO L85 PathProgramCache]: Analyzing trace with hash 365808172, now seen corresponding path program 1 times [2023-08-30 08:26:30,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:30,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159659246] [2023-08-30 08:26:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:30,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:30,778 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 08:26:30,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:30,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159659246] [2023-08-30 08:26:30,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159659246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:30,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:30,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:30,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317749717] [2023-08-30 08:26:30,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:30,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:30,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 08:26:30,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 9 transitions, 25 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:30,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:30,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 08:26:30,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:30,822 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2023-08-30 08:26:30,822 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:30,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 19 events. 7/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 33. Up to 13 conditions per place. [2023-08-30 08:26:30,823 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 8 selfloop transitions, 1 changer transitions 0/10 dead transitions. [2023-08-30 08:26:30,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 10 transitions, 45 flow [2023-08-30 08:26:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-30 08:26:30,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41767068273092367 [2023-08-30 08:26:30,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-30 08:26:30,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-30 08:26:30,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:30,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-30 08:26:30,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:30,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:30,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:30,838 INFO L175 Difference]: Start difference. First operand has 14 places, 9 transitions, 25 flow. Second operand 3 states and 208 transitions. [2023-08-30 08:26:30,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 10 transitions, 45 flow [2023-08-30 08:26:30,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 10 transitions, 44 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:30,839 INFO L231 Difference]: Finished difference. Result has 13 places, 8 transitions, 24 flow [2023-08-30 08:26:30,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=24, PETRI_PLACES=13, PETRI_TRANSITIONS=8} [2023-08-30 08:26:30,840 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -2 predicate places. [2023-08-30 08:26:30,840 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 8 transitions, 24 flow [2023-08-30 08:26:30,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:30,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:30,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:26:30,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:26:30,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-08-30 08:26:30,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash 365808231, now seen corresponding path program 1 times [2023-08-30 08:26:30,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:30,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383194910] [2023-08-30 08:26:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:31,040 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 08:26:31,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:31,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383194910] [2023-08-30 08:26:31,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383194910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:31,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:31,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804562549] [2023-08-30 08:26:31,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:31,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:31,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:31,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:31,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:31,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2023-08-30 08:26:31,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 8 transitions, 24 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:31,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2023-08-30 08:26:31,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:31,102 INFO L130 PetriNetUnfolder]: 9/24 cut-off events. [2023-08-30 08:26:31,104 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:31,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 24 events. 9/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 4 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 46. Up to 19 conditions per place. [2023-08-30 08:26:31,106 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 8 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2023-08-30 08:26:31,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 11 transitions, 50 flow [2023-08-30 08:26:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2023-08-30 08:26:31,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40763052208835343 [2023-08-30 08:26:31,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2023-08-30 08:26:31,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2023-08-30 08:26:31,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:31,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2023-08-30 08:26:31,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,112 INFO L175 Difference]: Start difference. First operand has 13 places, 8 transitions, 24 flow. Second operand 3 states and 203 transitions. [2023-08-30 08:26:31,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 11 transitions, 50 flow [2023-08-30 08:26:31,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:31,113 INFO L231 Difference]: Finished difference. Result has 15 places, 9 transitions, 35 flow [2023-08-30 08:26:31,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=15, PETRI_TRANSITIONS=9} [2023-08-30 08:26:31,114 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 0 predicate places. [2023-08-30 08:26:31,117 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 9 transitions, 35 flow [2023-08-30 08:26:31,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:31,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 08:26:31,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:26:31,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-08-30 08:26:31,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1544846308, now seen corresponding path program 1 times [2023-08-30 08:26:31,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:31,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596711586] [2023-08-30 08:26:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:31,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:31,171 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 08:26:31,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596711586] [2023-08-30 08:26:31,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596711586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:31,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:31,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:31,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148253107] [2023-08-30 08:26:31,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:31,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:31,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:31,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:31,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:31,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 08:26:31,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 9 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:31,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 08:26:31,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:31,213 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2023-08-30 08:26:31,214 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:26:31,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 19 events. 7/19 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 48. Up to 13 conditions per place. [2023-08-30 08:26:31,214 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-30 08:26:31,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 10 transitions, 53 flow [2023-08-30 08:26:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2023-08-30 08:26:31,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41566265060240964 [2023-08-30 08:26:31,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2023-08-30 08:26:31,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2023-08-30 08:26:31,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:31,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2023-08-30 08:26:31,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,219 INFO L175 Difference]: Start difference. First operand has 15 places, 9 transitions, 35 flow. Second operand 3 states and 207 transitions. [2023-08-30 08:26:31,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 10 transitions, 53 flow [2023-08-30 08:26:31,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 49 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:31,220 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-30 08:26:31,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-30 08:26:31,221 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 0 predicate places. [2023-08-30 08:26:31,221 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-30 08:26:31,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2023-08-30 08:26:31,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2023-08-30 08:26:31,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2023-08-30 08:26:31,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2023-08-30 08:26:31,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2023-08-30 08:26:31,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2023-08-30 08:26:31,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2023-08-30 08:26:31,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2023-08-30 08:26:31,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:26:31,225 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 08:26:31,227 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 08:26:31,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:31,240 INFO L130 PetriNetUnfolder]: 7/89 cut-off events. [2023-08-30 08:26:31,240 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:31,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 7/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2023-08-30 08:26:31,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:31,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:31,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:31,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:31,242 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:31,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 79 transitions, 163 flow [2023-08-30 08:26:31,251 INFO L130 PetriNetUnfolder]: 7/89 cut-off events. [2023-08-30 08:26:31,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:31,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 7/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2023-08-30 08:26:31,252 INFO L119 LiptonReduction]: Number of co-enabled transitions 1170 [2023-08-30 08:26:34,082 INFO L134 LiptonReduction]: Checked pairs total: 1299 [2023-08-30 08:26:34,082 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-30 08:26:34,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:26:34,085 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;@21a0af86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:34,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:26:34,087 INFO L130 PetriNetUnfolder]: 1/14 cut-off events. [2023-08-30 08:26:34,087 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:34,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:34,088 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 08:26:34,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:26:34,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:34,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1027188483, now seen corresponding path program 1 times [2023-08-30 08:26:34,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:34,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385230725] [2023-08-30 08:26:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:34,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:26:34,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:26:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:26:34,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:26:34,136 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:26:34,137 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:26:34,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:26:34,137 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:26:34,138 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:26:34,138 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:26:34,139 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 08:26:34,171 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:26:34,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:34,216 INFO L130 PetriNetUnfolder]: 13/147 cut-off events. [2023-08-30 08:26:34,216 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:34,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 147 events. 13/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2023-08-30 08:26:34,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:34,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:34,222 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:34,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:34,223 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:34,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:34,240 INFO L130 PetriNetUnfolder]: 13/147 cut-off events. [2023-08-30 08:26:34,241 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:34,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 147 events. 13/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2023-08-30 08:26:34,246 INFO L119 LiptonReduction]: Number of co-enabled transitions 6480 [2023-08-30 08:26:36,429 INFO L134 LiptonReduction]: Checked pairs total: 9825 [2023-08-30 08:26:36,429 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-30 08:26:36,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:26:36,432 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;@21a0af86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:36,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 08:26:36,447 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 08:26:36,447 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:36,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:36,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:26:36,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 08:26:36,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:36,448 INFO L85 PathProgramCache]: Analyzing trace with hash 725788771, now seen corresponding path program 1 times [2023-08-30 08:26:36,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:36,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516503197] [2023-08-30 08:26:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:36,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:36,512 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 08:26:36,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:36,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516503197] [2023-08-30 08:26:36,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516503197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:36,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:36,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:36,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775367492] [2023-08-30 08:26:36,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:36,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:36,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:36,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:36,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:36,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 242 [2023-08-30 08:26:36,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:36,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 242 [2023-08-30 08:26:36,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:36,615 INFO L130 PetriNetUnfolder]: 278/499 cut-off events. [2023-08-30 08:26:36,615 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-30 08:26:36,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 499 events. 278/499 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2576 event pairs, 50 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 856. Up to 412 conditions per place. [2023-08-30 08:26:36,619 INFO L137 encePairwiseOnDemand]: 239/242 looper letters, 32 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 08:26:36,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 169 flow [2023-08-30 08:26:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-30 08:26:36,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834710743801653 [2023-08-30 08:26:36,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-30 08:26:36,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-30 08:26:36,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:36,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-30 08:26:36,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,628 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 351 transitions. [2023-08-30 08:26:36,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 169 flow [2023-08-30 08:26:36,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 167 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:36,630 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 76 flow [2023-08-30 08:26:36,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-08-30 08:26:36,632 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 08:26:36,632 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 76 flow [2023-08-30 08:26:36,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:36,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:26:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 08:26:36,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 08:26:36,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:36,634 INFO L85 PathProgramCache]: Analyzing trace with hash 725788802, now seen corresponding path program 1 times [2023-08-30 08:26:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628377066] [2023-08-30 08:26:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:36,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:36,705 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 08:26:36,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:36,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628377066] [2023-08-30 08:26:36,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628377066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:36,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:36,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:36,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792295069] [2023-08-30 08:26:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:36,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:36,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:36,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 242 [2023-08-30 08:26:36,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:36,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 242 [2023-08-30 08:26:36,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:36,805 INFO L130 PetriNetUnfolder]: 249/450 cut-off events. [2023-08-30 08:26:36,806 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-30 08:26:36,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 450 events. 249/450 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2205 event pairs, 44 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 786. Up to 363 conditions per place. [2023-08-30 08:26:36,809 INFO L137 encePairwiseOnDemand]: 240/242 looper letters, 31 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 08:26:36,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 165 flow [2023-08-30 08:26:36,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-08-30 08:26:36,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793388429752066 [2023-08-30 08:26:36,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-08-30 08:26:36,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-08-30 08:26:36,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:36,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-08-30 08:26:36,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,814 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 76 flow. Second operand 3 states and 348 transitions. [2023-08-30 08:26:36,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 165 flow [2023-08-30 08:26:36,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:36,816 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 75 flow [2023-08-30 08:26:36,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-08-30 08:26:36,818 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 08:26:36,819 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 75 flow [2023-08-30 08:26:36,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:36,820 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:36,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:26:36,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 08:26:36,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:36,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1425371592, now seen corresponding path program 1 times [2023-08-30 08:26:36,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:36,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769056017] [2023-08-30 08:26:36,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:36,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:36,864 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 08:26:36,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769056017] [2023-08-30 08:26:36,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769056017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:36,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:36,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:36,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240711085] [2023-08-30 08:26:36,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:36,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:36,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:36,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:36,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:36,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 242 [2023-08-30 08:26:36,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:36,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 242 [2023-08-30 08:26:36,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:36,950 INFO L130 PetriNetUnfolder]: 251/469 cut-off events. [2023-08-30 08:26:36,950 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-30 08:26:36,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 469 events. 251/469 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2277 event pairs, 21 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 744. Up to 336 conditions per place. [2023-08-30 08:26:36,953 INFO L137 encePairwiseOnDemand]: 240/242 looper letters, 29 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 08:26:36,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 154 flow [2023-08-30 08:26:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-08-30 08:26:36,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765840220385675 [2023-08-30 08:26:36,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-08-30 08:26:36,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-08-30 08:26:36,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:36,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-08-30 08:26:36,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,959 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 75 flow. Second operand 3 states and 346 transitions. [2023-08-30 08:26:36,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 154 flow [2023-08-30 08:26:36,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:36,960 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 74 flow [2023-08-30 08:26:36,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-08-30 08:26:36,961 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 08:26:36,961 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 74 flow [2023-08-30 08:26:36,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:36,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:36,961 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:36,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 08:26:36,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 08:26:36,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:36,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1425371710, now seen corresponding path program 1 times [2023-08-30 08:26:36,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:36,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379401180] [2023-08-30 08:26:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:36,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:37,004 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 08:26:37,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:37,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379401180] [2023-08-30 08:26:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379401180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:37,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:37,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:37,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385607846] [2023-08-30 08:26:37,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:37,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:37,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:37,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:37,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:37,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 242 [2023-08-30 08:26:37,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:37,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 242 [2023-08-30 08:26:37,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:37,085 INFO L130 PetriNetUnfolder]: 227/429 cut-off events. [2023-08-30 08:26:37,086 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 08:26:37,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 429 events. 227/429 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2003 event pairs, 21 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 688. Up to 296 conditions per place. [2023-08-30 08:26:37,089 INFO L137 encePairwiseOnDemand]: 240/242 looper letters, 28 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-30 08:26:37,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 150 flow [2023-08-30 08:26:37,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:37,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-30 08:26:37,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47520661157024796 [2023-08-30 08:26:37,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-30 08:26:37,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-30 08:26:37,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:37,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-30 08:26:37,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,094 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 74 flow. Second operand 3 states and 345 transitions. [2023-08-30 08:26:37,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 150 flow [2023-08-30 08:26:37,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:37,096 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 73 flow [2023-08-30 08:26:37,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 08:26:37,096 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 08:26:37,096 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 73 flow [2023-08-30 08:26:37,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:37,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:37,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:26:37,097 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 08:26:37,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:37,098 INFO L85 PathProgramCache]: Analyzing trace with hash 99536012, now seen corresponding path program 1 times [2023-08-30 08:26:37,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:37,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750572804] [2023-08-30 08:26:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:37,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:37,185 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 08:26:37,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:37,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750572804] [2023-08-30 08:26:37,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750572804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:37,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:37,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:26:37,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52535520] [2023-08-30 08:26:37,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:37,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:26:37,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:37,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:26:37,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:26:37,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 242 [2023-08-30 08:26:37,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:37,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 242 [2023-08-30 08:26:37,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:37,328 INFO L130 PetriNetUnfolder]: 369/673 cut-off events. [2023-08-30 08:26:37,328 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-30 08:26:37,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 673 events. 369/673 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3404 event pairs, 159 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 792. Up to 312 conditions per place. [2023-08-30 08:26:37,333 INFO L137 encePairwiseOnDemand]: 237/242 looper letters, 42 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-30 08:26:37,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 229 flow [2023-08-30 08:26:37,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:26:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:26:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2023-08-30 08:26:37,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617768595041322 [2023-08-30 08:26:37,335 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2023-08-30 08:26:37,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2023-08-30 08:26:37,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:37,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2023-08-30 08:26:37,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,348 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,348 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 73 flow. Second operand 4 states and 447 transitions. [2023-08-30 08:26:37,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 229 flow [2023-08-30 08:26:37,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:37,349 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 95 flow [2023-08-30 08:26:37,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-08-30 08:26:37,350 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-30 08:26:37,350 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 95 flow [2023-08-30 08:26:37,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:37,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:37,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:26:37,351 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 08:26:37,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash 99536011, now seen corresponding path program 1 times [2023-08-30 08:26:37,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:37,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595836903] [2023-08-30 08:26:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:37,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:37,401 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 08:26:37,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:37,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595836903] [2023-08-30 08:26:37,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595836903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:37,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:37,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:37,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099925802] [2023-08-30 08:26:37,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:37,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:37,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:37,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:37,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:37,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 242 [2023-08-30 08:26:37,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:37,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 242 [2023-08-30 08:26:37,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:37,486 INFO L130 PetriNetUnfolder]: 325/606 cut-off events. [2023-08-30 08:26:37,486 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2023-08-30 08:26:37,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 606 events. 325/606 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3143 event pairs, 7 based on Foata normal form. 36/519 useless extension candidates. Maximal degree in co-relation 1174. Up to 458 conditions per place. [2023-08-30 08:26:37,491 INFO L137 encePairwiseOnDemand]: 240/242 looper letters, 29 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 08:26:37,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 173 flow [2023-08-30 08:26:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:37,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-30 08:26:37,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47520661157024796 [2023-08-30 08:26:37,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-30 08:26:37,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-30 08:26:37,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:37,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-30 08:26:37,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,496 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 95 flow. Second operand 3 states and 345 transitions. [2023-08-30 08:26:37,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 173 flow [2023-08-30 08:26:37,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:37,498 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 84 flow [2023-08-30 08:26:37,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-30 08:26:37,498 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-08-30 08:26:37,499 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 84 flow [2023-08-30 08:26:37,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:37,499 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:37,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:26:37,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 08:26:37,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:37,500 INFO L85 PathProgramCache]: Analyzing trace with hash 532801730, now seen corresponding path program 1 times [2023-08-30 08:26:37,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:37,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227247332] [2023-08-30 08:26:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:37,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:37,569 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 08:26:37,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:37,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227247332] [2023-08-30 08:26:37,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227247332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:37,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:37,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:37,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164682975] [2023-08-30 08:26:37,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:37,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:37,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:37,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:37,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 242 [2023-08-30 08:26:37,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:37,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 242 [2023-08-30 08:26:37,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:37,648 INFO L130 PetriNetUnfolder]: 282/533 cut-off events. [2023-08-30 08:26:37,648 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-08-30 08:26:37,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 533 events. 282/533 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2578 event pairs, 30 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 958. Up to 352 conditions per place. [2023-08-30 08:26:37,652 INFO L137 encePairwiseOnDemand]: 240/242 looper letters, 27 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 08:26:37,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 170 flow [2023-08-30 08:26:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-08-30 08:26:37,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47107438016528924 [2023-08-30 08:26:37,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-08-30 08:26:37,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-08-30 08:26:37,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:37,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-08-30 08:26:37,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,657 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 84 flow. Second operand 3 states and 342 transitions. [2023-08-30 08:26:37,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 170 flow [2023-08-30 08:26:37,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:37,659 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 83 flow [2023-08-30 08:26:37,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-30 08:26:37,660 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-08-30 08:26:37,660 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 83 flow [2023-08-30 08:26:37,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:37,660 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:37,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 08:26:37,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 08:26:37,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash 532801728, now seen corresponding path program 1 times [2023-08-30 08:26:37,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:37,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562747240] [2023-08-30 08:26:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:37,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:37,732 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 08:26:37,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:37,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562747240] [2023-08-30 08:26:37,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562747240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:37,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:37,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:26:37,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572902858] [2023-08-30 08:26:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:37,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:26:37,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:26:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:26:37,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 242 [2023-08-30 08:26:37,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:37,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 242 [2023-08-30 08:26:37,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:37,870 INFO L130 PetriNetUnfolder]: 438/825 cut-off events. [2023-08-30 08:26:37,870 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-30 08:26:37,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1781 conditions, 825 events. 438/825 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4248 event pairs, 216 based on Foata normal form. 0/701 useless extension candidates. Maximal degree in co-relation 1476. Up to 433 conditions per place. [2023-08-30 08:26:37,876 INFO L137 encePairwiseOnDemand]: 238/242 looper letters, 30 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-30 08:26:37,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 186 flow [2023-08-30 08:26:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:37,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2023-08-30 08:26:37,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573002754820937 [2023-08-30 08:26:37,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2023-08-30 08:26:37,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2023-08-30 08:26:37,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:37,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2023-08-30 08:26:37,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,882 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 83 flow. Second operand 3 states and 332 transitions. [2023-08-30 08:26:37,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 186 flow [2023-08-30 08:26:37,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:37,884 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 96 flow [2023-08-30 08:26:37,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-08-30 08:26:37,884 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-30 08:26:37,884 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 96 flow [2023-08-30 08:26:37,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:37,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:37,885 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:37,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 08:26:37,885 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 08:26:37,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1115539261, now seen corresponding path program 1 times [2023-08-30 08:26:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:37,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091217107] [2023-08-30 08:26:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:37,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:37,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:37,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091217107] [2023-08-30 08:26:37,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091217107] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:37,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485593888] [2023-08-30 08:26:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:37,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:37,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:37,944 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 08:26:37,977 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 08:26:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:38,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:26:38,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:38,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:38,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485593888] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:38,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:38,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-30 08:26:38,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230631782] [2023-08-30 08:26:38,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:38,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:26:38,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:38,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:26:38,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:26:38,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 242 [2023-08-30 08:26:38,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 102.33333333333333) internal successors, (614), 6 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 08:26:38,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:38,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 242 [2023-08-30 08:26:38,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:38,311 INFO L130 PetriNetUnfolder]: 477/887 cut-off events. [2023-08-30 08:26:38,311 INFO L131 PetriNetUnfolder]: For 207/207 co-relation queries the response was YES. [2023-08-30 08:26:38,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 887 events. 477/887 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4799 event pairs, 76 based on Foata normal form. 0/801 useless extension candidates. Maximal degree in co-relation 1582. Up to 319 conditions per place. [2023-08-30 08:26:38,317 INFO L137 encePairwiseOnDemand]: 238/242 looper letters, 40 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-08-30 08:26:38,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 272 flow [2023-08-30 08:26:38,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:26:38,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:26:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-08-30 08:26:38,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45661157024793386 [2023-08-30 08:26:38,320 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-08-30 08:26:38,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-08-30 08:26:38,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:38,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-08-30 08:26:38,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:38,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:38,324 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:38,324 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 96 flow. Second operand 4 states and 442 transitions. [2023-08-30 08:26:38,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 272 flow [2023-08-30 08:26:38,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:38,326 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 105 flow [2023-08-30 08:26:38,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-08-30 08:26:38,327 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-30 08:26:38,328 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 105 flow [2023-08-30 08:26:38,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.33333333333333) internal successors, (614), 6 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 08:26:38,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:38,328 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:38,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 08:26:38,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 08:26:38,533 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 08:26:38,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash -429722377, now seen corresponding path program 1 times [2023-08-30 08:26:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:38,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693857830] [2023-08-30 08:26:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:38,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:38,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693857830] [2023-08-30 08:26:38,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693857830] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:38,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935076496] [2023-08-30 08:26:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:38,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:38,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:38,577 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 08:26:38,580 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 08:26:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:38,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:26:38,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:38,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:38,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935076496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:38,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:38,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2023-08-30 08:26:38,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498287522] [2023-08-30 08:26:38,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:38,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:26:38,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:38,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:26:38,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:26:38,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 242 [2023-08-30 08:26:38,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:38,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:38,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 242 [2023-08-30 08:26:38,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:38,936 INFO L130 PetriNetUnfolder]: 511/950 cut-off events. [2023-08-30 08:26:38,937 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2023-08-30 08:26:38,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2379 conditions, 950 events. 511/950 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4939 event pairs, 33 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 1983. Up to 324 conditions per place. [2023-08-30 08:26:38,941 INFO L137 encePairwiseOnDemand]: 238/242 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-08-30 08:26:38,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 341 flow [2023-08-30 08:26:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:26:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:26:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 539 transitions. [2023-08-30 08:26:38,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2023-08-30 08:26:38,943 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 539 transitions. [2023-08-30 08:26:38,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 539 transitions. [2023-08-30 08:26:38,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:38,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 539 transitions. [2023-08-30 08:26:38,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:38,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:38,947 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:38,948 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 105 flow. Second operand 5 states and 539 transitions. [2023-08-30 08:26:38,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 341 flow [2023-08-30 08:26:38,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:38,949 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-30 08:26:38,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-30 08:26:38,950 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-08-30 08:26:38,950 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-30 08:26:38,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:38,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-08-30 08:26:38,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-08-30 08:26:38,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-08-30 08:26:38,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-08-30 08:26:38,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-08-30 08:26:38,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-08-30 08:26:38,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-08-30 08:26:38,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-08-30 08:26:38,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-08-30 08:26:38,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-08-30 08:26:38,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-08-30 08:26:38,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-08-30 08:26:38,966 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 08:26:39,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 08:26:39,158 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:39,159 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 08:26:39,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:39,170 INFO L130 PetriNetUnfolder]: 13/147 cut-off events. [2023-08-30 08:26:39,170 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:39,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 147 events. 13/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2023-08-30 08:26:39,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:39,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:39,172 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:39,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:39,173 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:39,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 125 transitions, 262 flow [2023-08-30 08:26:39,183 INFO L130 PetriNetUnfolder]: 13/147 cut-off events. [2023-08-30 08:26:39,183 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:39,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 147 events. 13/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2023-08-30 08:26:39,187 INFO L119 LiptonReduction]: Number of co-enabled transitions 6480 [2023-08-30 08:26:41,344 INFO L134 LiptonReduction]: Checked pairs total: 10188 [2023-08-30 08:26:41,345 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-30 08:26:41,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:26:41,347 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;@21a0af86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:41,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:26:41,349 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2023-08-30 08:26:41,350 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:41,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:41,350 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 08:26:41,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:26:41,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash 290879724, now seen corresponding path program 1 times [2023-08-30 08:26:41,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:41,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275555867] [2023-08-30 08:26:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:41,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:26:41,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:26:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:26:41,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:26:41,371 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:26:41,371 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:26:41,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 08:26:41,372 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:26:41,372 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:26:41,373 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:26:41,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 08:26:41,400 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:26:41,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:41,421 INFO L130 PetriNetUnfolder]: 19/205 cut-off events. [2023-08-30 08:26:41,421 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:26:41,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 205 events. 19/205 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 485 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2023-08-30 08:26:41,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:41,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:41,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:41,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:41,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:41,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:41,444 INFO L130 PetriNetUnfolder]: 19/205 cut-off events. [2023-08-30 08:26:41,444 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:26:41,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 205 events. 19/205 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 485 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2023-08-30 08:26:41,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 15930 [2023-08-30 08:26:44,139 INFO L134 LiptonReduction]: Checked pairs total: 27397 [2023-08-30 08:26:44,139 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-30 08:26:44,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:26:44,140 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;@21a0af86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:44,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 08:26:44,142 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 08:26:44,142 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:44,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:44,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:26:44,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:44,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:44,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1202477045, now seen corresponding path program 1 times [2023-08-30 08:26:44,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:44,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275169079] [2023-08-30 08:26:44,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:44,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:44,183 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 08:26:44,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:44,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275169079] [2023-08-30 08:26:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275169079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:44,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610752842] [2023-08-30 08:26:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:44,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:44,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:44,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 335 [2023-08-30 08:26:44,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:44,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:44,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 335 [2023-08-30 08:26:44,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:44,653 INFO L130 PetriNetUnfolder]: 4190/6275 cut-off events. [2023-08-30 08:26:44,653 INFO L131 PetriNetUnfolder]: For 529/529 co-relation queries the response was YES. [2023-08-30 08:26:44,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12282 conditions, 6275 events. 4190/6275 cut-off events. For 529/529 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 40272 event pairs, 224 based on Foata normal form. 0/3929 useless extension candidates. Maximal degree in co-relation 3586. Up to 5182 conditions per place. [2023-08-30 08:26:44,702 INFO L137 encePairwiseOnDemand]: 332/335 looper letters, 52 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-30 08:26:44,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 273 flow [2023-08-30 08:26:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:44,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:44,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-30 08:26:44,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855721393034826 [2023-08-30 08:26:44,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-30 08:26:44,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-30 08:26:44,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:44,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-30 08:26:44,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:44,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:44,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:44,709 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 117 flow. Second operand 3 states and 488 transitions. [2023-08-30 08:26:44,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 273 flow [2023-08-30 08:26:44,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 265 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:44,711 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 109 flow [2023-08-30 08:26:44,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-08-30 08:26:44,712 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 08:26:44,712 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 109 flow [2023-08-30 08:26:44,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:44,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:44,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:26:44,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 08:26:44,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:44,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1202477177, now seen corresponding path program 1 times [2023-08-30 08:26:44,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:44,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53308617] [2023-08-30 08:26:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:44,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:44,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:44,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53308617] [2023-08-30 08:26:44,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53308617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:44,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:44,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:44,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288088371] [2023-08-30 08:26:44,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:44,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:44,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:44,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:44,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:44,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 335 [2023-08-30 08:26:44,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:44,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:44,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 335 [2023-08-30 08:26:44,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:45,241 INFO L130 PetriNetUnfolder]: 3651/5362 cut-off events. [2023-08-30 08:26:45,242 INFO L131 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2023-08-30 08:26:45,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 5362 events. 3651/5362 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 30800 event pairs, 926 based on Foata normal form. 0/3483 useless extension candidates. Maximal degree in co-relation 10690. Up to 4557 conditions per place. [2023-08-30 08:26:45,271 INFO L137 encePairwiseOnDemand]: 333/335 looper letters, 51 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-08-30 08:26:45,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 263 flow [2023-08-30 08:26:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 08:26:45,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48258706467661694 [2023-08-30 08:26:45,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 08:26:45,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 08:26:45,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:45,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 08:26:45,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,277 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 109 flow. Second operand 3 states and 485 transitions. [2023-08-30 08:26:45,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 263 flow [2023-08-30 08:26:45,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:45,279 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 108 flow [2023-08-30 08:26:45,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-30 08:26:45,279 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 08:26:45,279 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 108 flow [2023-08-30 08:26:45,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:45,280 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:45,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 08:26:45,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:45,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:45,282 INFO L85 PathProgramCache]: Analyzing trace with hash 499149975, now seen corresponding path program 1 times [2023-08-30 08:26:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:45,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61123156] [2023-08-30 08:26:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:45,361 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 08:26:45,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61123156] [2023-08-30 08:26:45,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61123156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:45,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:45,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:45,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203355278] [2023-08-30 08:26:45,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:45,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:45,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:45,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:45,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 335 [2023-08-30 08:26:45,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:45,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 335 [2023-08-30 08:26:45,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:45,809 INFO L130 PetriNetUnfolder]: 3675/5447 cut-off events. [2023-08-30 08:26:45,809 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-08-30 08:26:45,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11070 conditions, 5447 events. 3675/5447 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 32074 event pairs, 547 based on Foata normal form. 0/3543 useless extension candidates. Maximal degree in co-relation 9323. Up to 4576 conditions per place. [2023-08-30 08:26:45,838 INFO L137 encePairwiseOnDemand]: 333/335 looper letters, 49 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-30 08:26:45,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 252 flow [2023-08-30 08:26:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-30 08:26:45,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48059701492537316 [2023-08-30 08:26:45,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-30 08:26:45,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-30 08:26:45,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:45,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-30 08:26:45,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,844 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 108 flow. Second operand 3 states and 483 transitions. [2023-08-30 08:26:45,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 252 flow [2023-08-30 08:26:45,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:45,847 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 107 flow [2023-08-30 08:26:45,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-30 08:26:45,848 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 08:26:45,848 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 107 flow [2023-08-30 08:26:45,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:45,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:45,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 08:26:45,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:45,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:45,849 INFO L85 PathProgramCache]: Analyzing trace with hash 499150063, now seen corresponding path program 1 times [2023-08-30 08:26:45,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:45,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697575400] [2023-08-30 08:26:45,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:45,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:45,898 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 08:26:45,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:45,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697575400] [2023-08-30 08:26:45,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697575400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:45,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:45,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:45,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843912074] [2023-08-30 08:26:45,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:45,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:45,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:45,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:45,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:45,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 335 [2023-08-30 08:26:45,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:45,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 335 [2023-08-30 08:26:45,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:46,354 INFO L130 PetriNetUnfolder]: 3331/5039 cut-off events. [2023-08-30 08:26:46,354 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2023-08-30 08:26:46,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10206 conditions, 5039 events. 3331/5039 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 30660 event pairs, 211 based on Foata normal form. 0/3369 useless extension candidates. Maximal degree in co-relation 8602. Up to 4024 conditions per place. [2023-08-30 08:26:46,386 INFO L137 encePairwiseOnDemand]: 333/335 looper letters, 48 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 08:26:46,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 248 flow [2023-08-30 08:26:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-30 08:26:46,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47960199004975124 [2023-08-30 08:26:46,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-30 08:26:46,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-30 08:26:46,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:46,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-30 08:26:46,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:46,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:46,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:46,392 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 107 flow. Second operand 3 states and 482 transitions. [2023-08-30 08:26:46,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 248 flow [2023-08-30 08:26:46,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:46,394 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 106 flow [2023-08-30 08:26:46,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-08-30 08:26:46,394 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 08:26:46,394 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 106 flow [2023-08-30 08:26:46,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:46,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:46,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:46,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 08:26:46,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:46,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1988041232, now seen corresponding path program 1 times [2023-08-30 08:26:46,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:46,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722879426] [2023-08-30 08:26:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:46,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:46,457 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 08:26:46,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:46,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722879426] [2023-08-30 08:26:46,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722879426] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:46,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:46,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:46,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315490011] [2023-08-30 08:26:46,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:46,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:46,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:46,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:46,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:46,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 335 [2023-08-30 08:26:46,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:46,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:46,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 335 [2023-08-30 08:26:46,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:46,785 INFO L130 PetriNetUnfolder]: 2849/4199 cut-off events. [2023-08-30 08:26:46,786 INFO L131 PetriNetUnfolder]: For 324/324 co-relation queries the response was YES. [2023-08-30 08:26:46,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8901 conditions, 4199 events. 2849/4199 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 23319 event pairs, 755 based on Foata normal form. 0/2887 useless extension candidates. Maximal degree in co-relation 8798. Up to 3498 conditions per place. [2023-08-30 08:26:46,813 INFO L137 encePairwiseOnDemand]: 333/335 looper letters, 48 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 08:26:46,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 255 flow [2023-08-30 08:26:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-30 08:26:46,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47960199004975124 [2023-08-30 08:26:46,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-30 08:26:46,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-30 08:26:46,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:46,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-30 08:26:46,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:46,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:46,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:46,819 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 106 flow. Second operand 3 states and 482 transitions. [2023-08-30 08:26:46,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 255 flow [2023-08-30 08:26:46,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:46,822 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 105 flow [2023-08-30 08:26:46,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-08-30 08:26:46,822 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-30 08:26:46,822 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 105 flow [2023-08-30 08:26:46,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:46,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:46,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:46,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 08:26:46,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:46,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1988041234, now seen corresponding path program 1 times [2023-08-30 08:26:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:46,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060699317] [2023-08-30 08:26:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:46,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:46,873 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 08:26:46,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:46,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060699317] [2023-08-30 08:26:46,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060699317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:46,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:46,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:26:46,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661277738] [2023-08-30 08:26:46,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:46,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:26:46,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:46,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:26:46,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:26:46,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 335 [2023-08-30 08:26:46,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:46,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:46,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 335 [2023-08-30 08:26:46,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:47,444 INFO L130 PetriNetUnfolder]: 4623/7133 cut-off events. [2023-08-30 08:26:47,444 INFO L131 PetriNetUnfolder]: For 452/452 co-relation queries the response was YES. [2023-08-30 08:26:47,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14507 conditions, 7133 events. 4623/7133 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 45081 event pairs, 2345 based on Foata normal form. 0/5093 useless extension candidates. Maximal degree in co-relation 7536. Up to 3896 conditions per place. [2023-08-30 08:26:47,548 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 51 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-30 08:26:47,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 66 transitions, 271 flow [2023-08-30 08:26:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-08-30 08:26:47,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.472636815920398 [2023-08-30 08:26:47,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-08-30 08:26:47,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-08-30 08:26:47,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:47,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-08-30 08:26:47,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:47,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:47,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:47,555 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 105 flow. Second operand 3 states and 475 transitions. [2023-08-30 08:26:47,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 66 transitions, 271 flow [2023-08-30 08:26:47,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:47,556 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 118 flow [2023-08-30 08:26:47,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-30 08:26:47,557 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-08-30 08:26:47,557 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 118 flow [2023-08-30 08:26:47,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:47,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:47,562 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:47,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 08:26:47,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:47,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:47,562 INFO L85 PathProgramCache]: Analyzing trace with hash -252795762, now seen corresponding path program 1 times [2023-08-30 08:26:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:47,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62270226] [2023-08-30 08:26:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:47,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:26:47,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:47,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62270226] [2023-08-30 08:26:47,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62270226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:47,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:47,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:47,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524931806] [2023-08-30 08:26:47,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:47,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:47,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:47,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:47,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:47,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 335 [2023-08-30 08:26:47,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:47,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:47,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 335 [2023-08-30 08:26:47,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:48,319 INFO L130 PetriNetUnfolder]: 4541/6929 cut-off events. [2023-08-30 08:26:48,319 INFO L131 PetriNetUnfolder]: For 1233/1233 co-relation queries the response was YES. [2023-08-30 08:26:48,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15312 conditions, 6929 events. 4541/6929 cut-off events. For 1233/1233 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 42110 event pairs, 561 based on Foata normal form. 0/5151 useless extension candidates. Maximal degree in co-relation 13337. Up to 5104 conditions per place. [2023-08-30 08:26:48,357 INFO L137 encePairwiseOnDemand]: 333/335 looper letters, 46 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 08:26:48,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 261 flow [2023-08-30 08:26:48,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-30 08:26:48,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47562189054726367 [2023-08-30 08:26:48,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-30 08:26:48,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-30 08:26:48,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:48,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-30 08:26:48,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:48,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:48,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:48,375 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 118 flow. Second operand 3 states and 478 transitions. [2023-08-30 08:26:48,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 261 flow [2023-08-30 08:26:48,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:48,377 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 116 flow [2023-08-30 08:26:48,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-30 08:26:48,378 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-08-30 08:26:48,378 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 116 flow [2023-08-30 08:26:48,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:48,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:48,378 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:48,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 08:26:48,379 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:48,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash -252795572, now seen corresponding path program 1 times [2023-08-30 08:26:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:48,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692276429] [2023-08-30 08:26:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:48,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:26:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:48,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692276429] [2023-08-30 08:26:48,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692276429] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:48,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:48,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:48,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213178040] [2023-08-30 08:26:48,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:48,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:48,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:48,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 335 [2023-08-30 08:26:48,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:48,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:48,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 335 [2023-08-30 08:26:48,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:48,873 INFO L130 PetriNetUnfolder]: 4101/6313 cut-off events. [2023-08-30 08:26:48,873 INFO L131 PetriNetUnfolder]: For 962/962 co-relation queries the response was YES. [2023-08-30 08:26:48,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13922 conditions, 6313 events. 4101/6313 cut-off events. For 962/962 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37912 event pairs, 561 based on Foata normal form. 0/4793 useless extension candidates. Maximal degree in co-relation 12112. Up to 4488 conditions per place. [2023-08-30 08:26:48,923 INFO L137 encePairwiseOnDemand]: 333/335 looper letters, 45 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 08:26:48,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 255 flow [2023-08-30 08:26:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:48,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-30 08:26:48,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746268656716418 [2023-08-30 08:26:48,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-30 08:26:48,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-30 08:26:48,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:48,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-30 08:26:48,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:48,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:48,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:48,929 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 116 flow. Second operand 3 states and 477 transitions. [2023-08-30 08:26:48,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 255 flow [2023-08-30 08:26:48,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:48,934 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 115 flow [2023-08-30 08:26:48,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-08-30 08:26:48,935 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-08-30 08:26:48,935 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 115 flow [2023-08-30 08:26:48,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:48,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:48,935 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:48,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 08:26:48,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:48,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:48,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1120848061, now seen corresponding path program 1 times [2023-08-30 08:26:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:48,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254699482] [2023-08-30 08:26:48,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:48,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:48,994 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 08:26:48,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:48,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254699482] [2023-08-30 08:26:48,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254699482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:48,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:48,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:48,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922203640] [2023-08-30 08:26:48,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:48,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:48,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:48,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:48,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:49,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 335 [2023-08-30 08:26:49,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:49,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:49,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 335 [2023-08-30 08:26:49,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:49,421 INFO L130 PetriNetUnfolder]: 3635/5535 cut-off events. [2023-08-30 08:26:49,422 INFO L131 PetriNetUnfolder]: For 897/897 co-relation queries the response was YES. [2023-08-30 08:26:49,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12367 conditions, 5535 events. 3635/5535 cut-off events. For 897/897 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 33878 event pairs, 267 based on Foata normal form. 0/4308 useless extension candidates. Maximal degree in co-relation 10758. Up to 4290 conditions per place. [2023-08-30 08:26:49,464 INFO L137 encePairwiseOnDemand]: 333/335 looper letters, 45 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 08:26:49,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 262 flow [2023-08-30 08:26:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-30 08:26:49,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746268656716418 [2023-08-30 08:26:49,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-30 08:26:49,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-30 08:26:49,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:49,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-30 08:26:49,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:49,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:49,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:49,470 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 115 flow. Second operand 3 states and 477 transitions. [2023-08-30 08:26:49,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 262 flow [2023-08-30 08:26:49,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:49,472 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 114 flow [2023-08-30 08:26:49,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-30 08:26:49,473 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-08-30 08:26:49,473 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 114 flow [2023-08-30 08:26:49,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:49,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:49,473 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:49,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 08:26:49,474 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:49,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1120848062, now seen corresponding path program 1 times [2023-08-30 08:26:49,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:49,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885750044] [2023-08-30 08:26:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:49,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:49,531 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 08:26:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:49,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885750044] [2023-08-30 08:26:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885750044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:49,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:26:49,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349967173] [2023-08-30 08:26:49,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:49,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:26:49,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:49,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:26:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:26:49,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 335 [2023-08-30 08:26:49,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:49,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:49,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 335 [2023-08-30 08:26:49,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:50,182 INFO L130 PetriNetUnfolder]: 5681/8623 cut-off events. [2023-08-30 08:26:50,182 INFO L131 PetriNetUnfolder]: For 1362/1362 co-relation queries the response was YES. [2023-08-30 08:26:50,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19275 conditions, 8623 events. 5681/8623 cut-off events. For 1362/1362 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 53120 event pairs, 2953 based on Foata normal form. 0/6877 useless extension candidates. Maximal degree in co-relation 16802. Up to 4822 conditions per place. [2023-08-30 08:26:50,229 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 48 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-30 08:26:50,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 278 flow [2023-08-30 08:26:50,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:50,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-30 08:26:50,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646766169154229 [2023-08-30 08:26:50,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-30 08:26:50,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-30 08:26:50,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:50,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-30 08:26:50,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:50,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:50,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:50,235 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 114 flow. Second operand 3 states and 467 transitions. [2023-08-30 08:26:50,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 278 flow [2023-08-30 08:26:50,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:50,237 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 127 flow [2023-08-30 08:26:50,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-30 08:26:50,237 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2023-08-30 08:26:50,237 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 127 flow [2023-08-30 08:26:50,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:50,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:50,238 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:50,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 08:26:50,238 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:50,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:50,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2147309681, now seen corresponding path program 1 times [2023-08-30 08:26:50,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:50,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557696989] [2023-08-30 08:26:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:50,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:50,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557696989] [2023-08-30 08:26:50,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557696989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688163244] [2023-08-30 08:26:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:50,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:50,286 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 08:26:50,289 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 08:26:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:50,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:26:50,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:50,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:50,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688163244] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:50,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:50,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 08:26:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557292127] [2023-08-30 08:26:50,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:50,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 08:26:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:50,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 08:26:50,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:26:50,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 335 [2023-08-30 08:26:50,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 127 flow. Second operand has 8 states, 8 states have (on average 141.375) internal successors, (1131), 8 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:50,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:50,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 335 [2023-08-30 08:26:50,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:51,126 INFO L130 PetriNetUnfolder]: 6169/9279 cut-off events. [2023-08-30 08:26:51,126 INFO L131 PetriNetUnfolder]: For 2039/2039 co-relation queries the response was YES. [2023-08-30 08:26:51,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22038 conditions, 9279 events. 6169/9279 cut-off events. For 2039/2039 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 58235 event pairs, 1443 based on Foata normal form. 0/7898 useless extension candidates. Maximal degree in co-relation 20956. Up to 3630 conditions per place. [2023-08-30 08:26:51,186 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 67 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-30 08:26:51,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 407 flow [2023-08-30 08:26:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:26:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:26:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 625 transitions. [2023-08-30 08:26:51,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664179104477612 [2023-08-30 08:26:51,189 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 625 transitions. [2023-08-30 08:26:51,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 625 transitions. [2023-08-30 08:26:51,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:51,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 625 transitions. [2023-08-30 08:26:51,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,193 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,193 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 127 flow. Second operand 4 states and 625 transitions. [2023-08-30 08:26:51,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 407 flow [2023-08-30 08:26:51,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:51,196 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 136 flow [2023-08-30 08:26:51,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-08-30 08:26:51,196 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2023-08-30 08:26:51,197 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 136 flow [2023-08-30 08:26:51,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.375) internal successors, (1131), 8 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:51,197 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:51,204 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 08:26:51,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:51,402 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:51,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:51,403 INFO L85 PathProgramCache]: Analyzing trace with hash -397143358, now seen corresponding path program 1 times [2023-08-30 08:26:51,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:51,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362935601] [2023-08-30 08:26:51,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:51,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:26:51,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:51,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362935601] [2023-08-30 08:26:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362935601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:51,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:51,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:51,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320967198] [2023-08-30 08:26:51,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:51,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:51,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:51,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:51,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:51,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 335 [2023-08-30 08:26:51,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:51,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 335 [2023-08-30 08:26:51,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:52,105 INFO L130 PetriNetUnfolder]: 5505/8469 cut-off events. [2023-08-30 08:26:52,105 INFO L131 PetriNetUnfolder]: For 3979/3979 co-relation queries the response was YES. [2023-08-30 08:26:52,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21184 conditions, 8469 events. 5505/8469 cut-off events. For 3979/3979 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 52876 event pairs, 855 based on Foata normal form. 0/7383 useless extension candidates. Maximal degree in co-relation 18506. Up to 5808 conditions per place. [2023-08-30 08:26:52,165 INFO L137 encePairwiseOnDemand]: 333/335 looper letters, 44 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-30 08:26:52,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 295 flow [2023-08-30 08:26:52,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:52,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:52,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-08-30 08:26:52,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696517412935323 [2023-08-30 08:26:52,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-08-30 08:26:52,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-08-30 08:26:52,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:52,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-08-30 08:26:52,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,171 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 136 flow. Second operand 3 states and 472 transitions. [2023-08-30 08:26:52,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 295 flow [2023-08-30 08:26:52,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:52,174 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 134 flow [2023-08-30 08:26:52,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-08-30 08:26:52,175 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2023-08-30 08:26:52,175 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 134 flow [2023-08-30 08:26:52,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:52,176 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:52,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 08:26:52,176 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:52,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:52,177 INFO L85 PathProgramCache]: Analyzing trace with hash -397143357, now seen corresponding path program 1 times [2023-08-30 08:26:52,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:52,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462052812] [2023-08-30 08:26:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:52,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:26:52,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:52,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462052812] [2023-08-30 08:26:52,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462052812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:52,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:52,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:26:52,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158532350] [2023-08-30 08:26:52,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:52,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:26:52,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:52,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:26:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:26:52,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 335 [2023-08-30 08:26:52,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:52,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 335 [2023-08-30 08:26:52,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:53,263 INFO L130 PetriNetUnfolder]: 8429/13017 cut-off events. [2023-08-30 08:26:53,264 INFO L131 PetriNetUnfolder]: For 5463/5463 co-relation queries the response was YES. [2023-08-30 08:26:53,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31603 conditions, 13017 events. 8429/13017 cut-off events. For 5463/5463 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 84704 event pairs, 4539 based on Foata normal form. 0/11551 useless extension candidates. Maximal degree in co-relation 27888. Up to 7312 conditions per place. [2023-08-30 08:26:53,341 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 47 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-30 08:26:53,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 309 flow [2023-08-30 08:26:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-30 08:26:53,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626865671641791 [2023-08-30 08:26:53,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-30 08:26:53,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-30 08:26:53,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:53,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-30 08:26:53,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:53,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:53,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:53,346 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 134 flow. Second operand 3 states and 465 transitions. [2023-08-30 08:26:53,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 309 flow [2023-08-30 08:26:53,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:53,353 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 147 flow [2023-08-30 08:26:53,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-08-30 08:26:53,354 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2023-08-30 08:26:53,354 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 147 flow [2023-08-30 08:26:53,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:53,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:53,355 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:53,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 08:26:53,355 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:53,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash 470894715, now seen corresponding path program 1 times [2023-08-30 08:26:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:53,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983892046] [2023-08-30 08:26:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:53,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:53,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:53,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983892046] [2023-08-30 08:26:53,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983892046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:53,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618142538] [2023-08-30 08:26:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:53,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:53,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:53,393 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 08:26:53,415 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 08:26:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:53,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:26:53,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:53,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:53,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618142538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:53,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:53,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2023-08-30 08:26:53,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008648474] [2023-08-30 08:26:53,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:53,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:26:53,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:53,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:26:53,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:26:53,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 335 [2023-08-30 08:26:53,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:53,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:53,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 335 [2023-08-30 08:26:53,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:54,565 INFO L130 PetriNetUnfolder]: 9147/13923 cut-off events. [2023-08-30 08:26:54,566 INFO L131 PetriNetUnfolder]: For 6675/6675 co-relation queries the response was YES. [2023-08-30 08:26:54,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35662 conditions, 13923 events. 9147/13923 cut-off events. For 6675/6675 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 92781 event pairs, 395 based on Foata normal form. 0/12993 useless extension candidates. Maximal degree in co-relation 31523. Up to 5268 conditions per place. [2023-08-30 08:26:54,637 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 83 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-30 08:26:54,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 563 flow [2023-08-30 08:26:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:26:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:26:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 766 transitions. [2023-08-30 08:26:54,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573134328358209 [2023-08-30 08:26:54,639 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 766 transitions. [2023-08-30 08:26:54,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 766 transitions. [2023-08-30 08:26:54,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:54,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 766 transitions. [2023-08-30 08:26:54,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,644 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,644 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 147 flow. Second operand 5 states and 766 transitions. [2023-08-30 08:26:54,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 563 flow [2023-08-30 08:26:54,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 99 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:54,649 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 155 flow [2023-08-30 08:26:54,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2023-08-30 08:26:54,650 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2023-08-30 08:26:54,650 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 155 flow [2023-08-30 08:26:54,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:54,650 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:54,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 08:26:54,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:54,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:26:54,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1974379943, now seen corresponding path program 1 times [2023-08-30 08:26:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:54,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971798820] [2023-08-30 08:26:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:26:54,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:54,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971798820] [2023-08-30 08:26:54,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971798820] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:54,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341765485] [2023-08-30 08:26:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:54,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:54,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:54,909 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 08:26:54,912 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 08:26:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:54,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:26:54,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:26:55,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:26:55,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341765485] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:55,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:55,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 08:26:55,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424516771] [2023-08-30 08:26:55,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:55,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 08:26:55,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:55,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 08:26:55,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:26:55,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 335 [2023-08-30 08:26:55,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 155 flow. Second operand has 8 states, 8 states have (on average 141.625) internal successors, (1133), 8 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:55,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 335 [2023-08-30 08:26:55,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:55,997 INFO L130 PetriNetUnfolder]: 9905/15165 cut-off events. [2023-08-30 08:26:55,997 INFO L131 PetriNetUnfolder]: For 10226/10226 co-relation queries the response was YES. [2023-08-30 08:26:56,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40401 conditions, 15165 events. 9905/15165 cut-off events. For 10226/10226 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 99600 event pairs, 2279 based on Foata normal form. 0/14467 useless extension candidates. Maximal degree in co-relation 35771. Up to 5328 conditions per place. [2023-08-30 08:26:56,078 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-08-30 08:26:56,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 455 flow [2023-08-30 08:26:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:26:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:26:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 612 transitions. [2023-08-30 08:26:56,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45671641791044776 [2023-08-30 08:26:56,080 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 612 transitions. [2023-08-30 08:26:56,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 612 transitions. [2023-08-30 08:26:56,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:56,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 612 transitions. [2023-08-30 08:26:56,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:56,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:56,084 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:56,084 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 155 flow. Second operand 4 states and 612 transitions. [2023-08-30 08:26:56,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 455 flow [2023-08-30 08:26:56,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:56,094 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2023-08-30 08:26:56,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2023-08-30 08:26:56,095 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2023-08-30 08:26:56,095 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2023-08-30 08:26:56,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.625) internal successors, (1133), 8 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:56,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 08:26:56,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 08:26:56,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 08:26:56,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 08:26:56,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 08:26:56,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 08:26:56,107 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 08:26:56,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:56,302 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:56,302 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 08:26:56,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:56,323 INFO L130 PetriNetUnfolder]: 19/205 cut-off events. [2023-08-30 08:26:56,323 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:26:56,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 205 events. 19/205 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 485 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2023-08-30 08:26:56,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:56,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:56,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:56,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:56,326 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:56,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 171 transitions, 363 flow [2023-08-30 08:26:56,344 INFO L130 PetriNetUnfolder]: 19/205 cut-off events. [2023-08-30 08:26:56,344 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:26:56,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 205 events. 19/205 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 485 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2023-08-30 08:26:56,353 INFO L119 LiptonReduction]: Number of co-enabled transitions 15930 [2023-08-30 08:26:58,930 INFO L134 LiptonReduction]: Checked pairs total: 26195 [2023-08-30 08:26:58,930 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-30 08:26:58,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:26:58,932 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;@21a0af86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:58,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:26:58,936 INFO L130 PetriNetUnfolder]: 4/50 cut-off events. [2023-08-30 08:26:58,936 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:26:58,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:58,937 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 08:26:58,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:26:58,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash 8344662, now seen corresponding path program 1 times [2023-08-30 08:26:58,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:58,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654109910] [2023-08-30 08:26:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:58,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:26:58,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:26:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:26:58,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:26:58,959 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:26:58,959 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:26:58,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 08:26:58,959 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:26:58,961 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:26:58,961 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:26:58,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 08:26:58,990 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:26:58,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 217 transitions, 466 flow [2023-08-30 08:26:59,018 INFO L130 PetriNetUnfolder]: 25/263 cut-off events. [2023-08-30 08:26:59,018 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 08:26:59,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 263 events. 25/263 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 213. Up to 10 conditions per place. [2023-08-30 08:26:59,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 217 transitions, 466 flow [2023-08-30 08:26:59,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 217 transitions, 466 flow [2023-08-30 08:26:59,023 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:59,023 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 217 transitions, 466 flow [2023-08-30 08:26:59,024 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 217 transitions, 466 flow [2023-08-30 08:26:59,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 217 transitions, 466 flow [2023-08-30 08:26:59,049 INFO L130 PetriNetUnfolder]: 25/263 cut-off events. [2023-08-30 08:26:59,049 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 08:26:59,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 263 events. 25/263 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 213. Up to 10 conditions per place. [2023-08-30 08:26:59,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 29520 [2023-08-30 08:27:01,877 INFO L134 LiptonReduction]: Checked pairs total: 47858 [2023-08-30 08:27:01,878 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-08-30 08:27:01,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:27:01,879 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;@21a0af86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:27:01,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 08:27:01,880 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 08:27:01,881 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:27:01,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:01,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:27:01,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:01,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1805292230, now seen corresponding path program 1 times [2023-08-30 08:27:01,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:01,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24141504] [2023-08-30 08:27:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:01,940 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 08:27:01,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:01,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24141504] [2023-08-30 08:27:01,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24141504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:01,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:01,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:27:01,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468737515] [2023-08-30 08:27:01,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:01,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:27:01,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:27:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:27:01,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 08:27:01,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:01,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:01,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 08:27:01,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:06,263 INFO L130 PetriNetUnfolder]: 52466/71221 cut-off events. [2023-08-30 08:27:06,263 INFO L131 PetriNetUnfolder]: For 8148/8148 co-relation queries the response was YES. [2023-08-30 08:27:06,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140883 conditions, 71221 events. 52466/71221 cut-off events. For 8148/8148 co-relation queries the response was YES. Maximal size of possible extension queue 2981. Compared 500196 event pairs, 3464 based on Foata normal form. 0/43874 useless extension candidates. Maximal degree in co-relation 12845. Up to 59776 conditions per place. [2023-08-30 08:27:06,652 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 72 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-30 08:27:06,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 381 flow [2023-08-30 08:27:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:27:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:27:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2023-08-30 08:27:06,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49368088467614535 [2023-08-30 08:27:06,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2023-08-30 08:27:06,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2023-08-30 08:27:06,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:06,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2023-08-30 08:27:06,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:06,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:06,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:06,657 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 156 flow. Second operand 3 states and 625 transitions. [2023-08-30 08:27:06,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 381 flow [2023-08-30 08:27:06,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 363 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-30 08:27:06,662 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 142 flow [2023-08-30 08:27:06,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-30 08:27:06,662 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-30 08:27:06,662 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 142 flow [2023-08-30 08:27:06,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:06,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:06,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:27:06,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 08:27:06,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:06,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1805292365, now seen corresponding path program 1 times [2023-08-30 08:27:06,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:06,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937326982] [2023-08-30 08:27:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:06,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:06,703 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 08:27:06,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:06,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937326982] [2023-08-30 08:27:06,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937326982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:06,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:06,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:27:06,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847422551] [2023-08-30 08:27:06,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:06,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:27:06,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:06,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:27:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:27:06,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 08:27:06,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:06,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:06,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 08:27:06,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:10,089 INFO L130 PetriNetUnfolder]: 45717/60588 cut-off events. [2023-08-30 08:27:10,090 INFO L131 PetriNetUnfolder]: For 3805/3805 co-relation queries the response was YES. [2023-08-30 08:27:10,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122623 conditions, 60588 events. 45717/60588 cut-off events. For 3805/3805 co-relation queries the response was YES. Maximal size of possible extension queue 2528. Compared 375506 event pairs, 13346 based on Foata normal form. 0/38099 useless extension candidates. Maximal degree in co-relation 122510. Up to 52509 conditions per place. [2023-08-30 08:27:10,482 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 71 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-30 08:27:10,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 90 transitions, 361 flow [2023-08-30 08:27:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:27:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:27:10,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-08-30 08:27:10,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4913112164296998 [2023-08-30 08:27:10,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-08-30 08:27:10,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-08-30 08:27:10,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:10,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-08-30 08:27:10,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:10,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:10,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:10,488 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 142 flow. Second operand 3 states and 622 transitions. [2023-08-30 08:27:10,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 90 transitions, 361 flow [2023-08-30 08:27:10,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:27:10,491 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 141 flow [2023-08-30 08:27:10,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2023-08-30 08:27:10,492 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-30 08:27:10,492 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 141 flow [2023-08-30 08:27:10,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:10,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:10,492 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:10,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 08:27:10,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:10,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1131160556, now seen corresponding path program 1 times [2023-08-30 08:27:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:10,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194986916] [2023-08-30 08:27:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:10,531 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 08:27:10,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:10,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194986916] [2023-08-30 08:27:10,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194986916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:10,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:10,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:27:10,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330100337] [2023-08-30 08:27:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:10,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:27:10,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:10,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:27:10,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:27:10,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 08:27:10,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:10,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:10,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 08:27:10,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:14,032 INFO L130 PetriNetUnfolder]: 45867/61015 cut-off events. [2023-08-30 08:27:14,032 INFO L131 PetriNetUnfolder]: For 3793/3793 co-relation queries the response was YES. [2023-08-30 08:27:14,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124683 conditions, 61015 events. 45867/61015 cut-off events. For 3793/3793 co-relation queries the response was YES. Maximal size of possible extension queue 2543. Compared 384286 event pairs, 9601 based on Foata normal form. 0/38383 useless extension candidates. Maximal degree in co-relation 106182. Up to 53104 conditions per place. [2023-08-30 08:27:14,587 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 69 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-08-30 08:27:14,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 350 flow [2023-08-30 08:27:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:27:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:27:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-08-30 08:27:14,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48973143759873616 [2023-08-30 08:27:14,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-08-30 08:27:14,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-08-30 08:27:14,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:14,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-08-30 08:27:14,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:14,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:14,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:14,592 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 141 flow. Second operand 3 states and 620 transitions. [2023-08-30 08:27:14,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 350 flow [2023-08-30 08:27:14,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:27:14,597 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 140 flow [2023-08-30 08:27:14,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-30 08:27:14,597 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-30 08:27:14,598 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 140 flow [2023-08-30 08:27:14,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:14,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:14,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:14,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 08:27:14,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:14,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:14,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1131160669, now seen corresponding path program 1 times [2023-08-30 08:27:14,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:14,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094689833] [2023-08-30 08:27:14,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:14,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:14,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:14,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094689833] [2023-08-30 08:27:14,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094689833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:14,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:14,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:27:14,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012018751] [2023-08-30 08:27:14,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:14,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:27:14,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:14,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:27:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:27:14,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 08:27:14,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:14,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:14,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 08:27:14,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:18,029 INFO L130 PetriNetUnfolder]: 41635/56863 cut-off events. [2023-08-30 08:27:18,030 INFO L131 PetriNetUnfolder]: For 3364/3364 co-relation queries the response was YES. [2023-08-30 08:27:18,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114927 conditions, 56863 events. 41635/56863 cut-off events. For 3364/3364 co-relation queries the response was YES. Maximal size of possible extension queue 2333. Compared 389711 event pairs, 3073 based on Foata normal form. 0/36683 useless extension candidates. Maximal degree in co-relation 97964. Up to 46648 conditions per place. [2023-08-30 08:27:18,361 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 68 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-08-30 08:27:18,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 346 flow [2023-08-30 08:27:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:27:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:27:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 08:27:18,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894154818325436 [2023-08-30 08:27:18,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 08:27:18,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 08:27:18,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:18,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 08:27:18,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:18,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:18,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:18,367 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 140 flow. Second operand 3 states and 619 transitions. [2023-08-30 08:27:18,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 346 flow [2023-08-30 08:27:18,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:27:18,373 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 139 flow [2023-08-30 08:27:18,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-30 08:27:18,374 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-30 08:27:18,374 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 139 flow [2023-08-30 08:27:18,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:18,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:18,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:18,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 08:27:18,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:18,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash 845253004, now seen corresponding path program 1 times [2023-08-30 08:27:18,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:18,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024680321] [2023-08-30 08:27:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:18,437 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 08:27:18,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:18,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024680321] [2023-08-30 08:27:18,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024680321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:18,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:18,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:27:18,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548603258] [2023-08-30 08:27:18,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:18,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:27:18,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:18,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:27:18,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:27:18,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 422 [2023-08-30 08:27:18,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:18,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:18,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 422 [2023-08-30 08:27:18,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:23,754 INFO L130 PetriNetUnfolder]: 63103/87065 cut-off events. [2023-08-30 08:27:23,754 INFO L131 PetriNetUnfolder]: For 5083/5083 co-relation queries the response was YES. [2023-08-30 08:27:24,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174853 conditions, 87065 events. 63103/87065 cut-off events. For 5083/5083 co-relation queries the response was YES. Maximal size of possible extension queue 3134. Compared 633584 event pairs, 3059 based on Foata normal form. 0/58379 useless extension candidates. Maximal degree in co-relation 174688. Up to 40218 conditions per place. [2023-08-30 08:27:24,381 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 102 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-08-30 08:27:24,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 511 flow [2023-08-30 08:27:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:27:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:27:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 827 transitions. [2023-08-30 08:27:24,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48992890995260663 [2023-08-30 08:27:24,382 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 827 transitions. [2023-08-30 08:27:24,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 827 transitions. [2023-08-30 08:27:24,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:24,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 827 transitions. [2023-08-30 08:27:24,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:24,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:24,387 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:24,387 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 139 flow. Second operand 4 states and 827 transitions. [2023-08-30 08:27:24,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 511 flow [2023-08-30 08:27:24,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 121 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:27:24,392 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 148 flow [2023-08-30 08:27:24,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-08-30 08:27:24,393 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2023-08-30 08:27:24,393 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 148 flow [2023-08-30 08:27:24,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:24,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:24,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:24,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 08:27:24,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:24,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:24,395 INFO L85 PathProgramCache]: Analyzing trace with hash 845253005, now seen corresponding path program 1 times [2023-08-30 08:27:24,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:24,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779663973] [2023-08-30 08:27:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:24,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:27:24,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779663973] [2023-08-30 08:27:24,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779663973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:24,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:24,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:27:24,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960046057] [2023-08-30 08:27:24,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:24,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:27:24,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:24,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:27:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:27:24,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 422 [2023-08-30 08:27:24,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:24,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:24,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 422 [2023-08-30 08:27:24,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:29,566 INFO L130 PetriNetUnfolder]: 56685/78135 cut-off events. [2023-08-30 08:27:29,566 INFO L131 PetriNetUnfolder]: For 10711/10711 co-relation queries the response was YES. [2023-08-30 08:27:29,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166483 conditions, 78135 events. 56685/78135 cut-off events. For 10711/10711 co-relation queries the response was YES. Maximal size of possible extension queue 2662. Compared 529287 event pairs, 31273 based on Foata normal form. 1458/57860 useless extension candidates. Maximal degree in co-relation 138658. Up to 45224 conditions per place. [2023-08-30 08:27:30,074 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 71 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-30 08:27:30,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 377 flow [2023-08-30 08:27:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:27:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:27:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 08:27:30,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826224328593997 [2023-08-30 08:27:30,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 08:27:30,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 08:27:30,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:30,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 08:27:30,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:30,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:30,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:30,077 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 148 flow. Second operand 3 states and 611 transitions. [2023-08-30 08:27:30,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 377 flow [2023-08-30 08:27:30,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:27:30,083 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 155 flow [2023-08-30 08:27:30,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2023-08-30 08:27:30,083 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-08-30 08:27:30,083 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 155 flow [2023-08-30 08:27:30,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:30,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:30,084 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:30,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 08:27:30,084 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:30,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:30,084 INFO L85 PathProgramCache]: Analyzing trace with hash -806901710, now seen corresponding path program 1 times [2023-08-30 08:27:30,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:30,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552537709] [2023-08-30 08:27:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:30,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:27:30,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:30,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552537709] [2023-08-30 08:27:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552537709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:30,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:30,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:27:30,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900669278] [2023-08-30 08:27:30,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:30,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:27:30,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:30,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:27:30,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:27:30,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 08:27:30,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:30,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:30,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 08:27:30,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:34,809 INFO L130 PetriNetUnfolder]: 56461/75949 cut-off events. [2023-08-30 08:27:34,809 INFO L131 PetriNetUnfolder]: For 20000/20000 co-relation queries the response was YES. [2023-08-30 08:27:35,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169826 conditions, 75949 events. 56461/75949 cut-off events. For 20000/20000 co-relation queries the response was YES. Maximal size of possible extension queue 2656. Compared 498335 event pairs, 7787 based on Foata normal form. 0/54996 useless extension candidates. Maximal degree in co-relation 149943. Up to 64416 conditions per place. [2023-08-30 08:27:35,391 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 66 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2023-08-30 08:27:35,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 367 flow [2023-08-30 08:27:35,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:27:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:27:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-08-30 08:27:35,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48578199052132703 [2023-08-30 08:27:35,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-08-30 08:27:35,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-08-30 08:27:35,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:35,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-08-30 08:27:35,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:35,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:35,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:35,395 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 155 flow. Second operand 3 states and 615 transitions. [2023-08-30 08:27:35,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 367 flow [2023-08-30 08:27:35,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:27:35,400 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 151 flow [2023-08-30 08:27:35,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-08-30 08:27:35,401 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2023-08-30 08:27:35,401 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 151 flow [2023-08-30 08:27:35,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:35,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:35,402 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:35,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 08:27:35,402 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:35,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:35,402 INFO L85 PathProgramCache]: Analyzing trace with hash -806901470, now seen corresponding path program 1 times [2023-08-30 08:27:35,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:35,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561244026] [2023-08-30 08:27:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:35,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:27:35,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:35,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561244026] [2023-08-30 08:27:35,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561244026] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:35,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:35,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:27:35,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119342528] [2023-08-30 08:27:35,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:35,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:27:35,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:35,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:27:35,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:27:35,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 08:27:35,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:35,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:35,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 08:27:35,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:39,692 INFO L130 PetriNetUnfolder]: 50917/69701 cut-off events. [2023-08-30 08:27:39,692 INFO L131 PetriNetUnfolder]: For 13029/13029 co-relation queries the response was YES. [2023-08-30 08:27:39,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152446 conditions, 69701 events. 50917/69701 cut-off events. For 13029/13029 co-relation queries the response was YES. Maximal size of possible extension queue 2445. Compared 474958 event pairs, 4091 based on Foata normal form. 0/51344 useless extension candidates. Maximal degree in co-relation 135686. Up to 56584 conditions per place. [2023-08-30 08:27:40,154 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 65 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2023-08-30 08:27:40,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 357 flow [2023-08-30 08:27:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:27:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:27:40,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2023-08-30 08:27:40,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849921011058452 [2023-08-30 08:27:40,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions. [2023-08-30 08:27:40,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions. [2023-08-30 08:27:40,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:40,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions. [2023-08-30 08:27:40,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:40,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:40,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:40,157 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 151 flow. Second operand 3 states and 614 transitions. [2023-08-30 08:27:40,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 357 flow [2023-08-30 08:27:40,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:27:40,179 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 150 flow [2023-08-30 08:27:40,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-08-30 08:27:40,179 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2023-08-30 08:27:40,179 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 150 flow [2023-08-30 08:27:40,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:40,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:40,180 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:40,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 08:27:40,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:40,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1261263556, now seen corresponding path program 1 times [2023-08-30 08:27:40,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:40,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604034423] [2023-08-30 08:27:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:40,215 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 08:27:40,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:40,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604034423] [2023-08-30 08:27:40,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604034423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:40,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:40,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:27:40,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731134686] [2023-08-30 08:27:40,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:40,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:27:40,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:40,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:27:40,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:27:40,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 422 [2023-08-30 08:27:40,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:40,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:40,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 422 [2023-08-30 08:27:40,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:47,646 INFO L130 PetriNetUnfolder]: 82703/113873 cut-off events. [2023-08-30 08:27:47,646 INFO L131 PetriNetUnfolder]: For 21416/21416 co-relation queries the response was YES. [2023-08-30 08:27:48,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249019 conditions, 113873 events. 82703/113873 cut-off events. For 21416/21416 co-relation queries the response was YES. Maximal size of possible extension queue 3642. Compared 813633 event pairs, 37145 based on Foata normal form. 0/85138 useless extension candidates. Maximal degree in co-relation 221712. Up to 55334 conditions per place. [2023-08-30 08:27:48,566 INFO L137 encePairwiseOnDemand]: 417/422 looper letters, 97 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 08:27:48,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 116 transitions, 528 flow [2023-08-30 08:27:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:27:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:27:48,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 815 transitions. [2023-08-30 08:27:48,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828199052132701 [2023-08-30 08:27:48,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 815 transitions. [2023-08-30 08:27:48,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 815 transitions. [2023-08-30 08:27:48,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:48,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 815 transitions. [2023-08-30 08:27:48,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.75) internal successors, (815), 4 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:48,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:48,570 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:48,570 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 150 flow. Second operand 4 states and 815 transitions. [2023-08-30 08:27:48,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 116 transitions, 528 flow [2023-08-30 08:27:48,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:27:48,587 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 172 flow [2023-08-30 08:27:48,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2023-08-30 08:27:48,588 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2023-08-30 08:27:48,588 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 172 flow [2023-08-30 08:27:48,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:48,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:48,588 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:48,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 08:27:48,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:48,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:48,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1261263557, now seen corresponding path program 1 times [2023-08-30 08:27:48,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:48,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034765251] [2023-08-30 08:27:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:48,664 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 08:27:48,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:48,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034765251] [2023-08-30 08:27:48,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034765251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:48,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:48,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:27:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104806451] [2023-08-30 08:27:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:48,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:27:48,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:27:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:27:48,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 422 [2023-08-30 08:27:48,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:48,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:48,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 422 [2023-08-30 08:27:48,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:55,115 INFO L130 PetriNetUnfolder]: 71065/98585 cut-off events. [2023-08-30 08:27:55,115 INFO L131 PetriNetUnfolder]: For 22858/22858 co-relation queries the response was YES. [2023-08-30 08:27:55,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225822 conditions, 98585 events. 71065/98585 cut-off events. For 22858/22858 co-relation queries the response was YES. Maximal size of possible extension queue 3169. Compared 717408 event pairs, 3797 based on Foata normal form. 3564/81483 useless extension candidates. Maximal degree in co-relation 201330. Up to 49170 conditions per place. [2023-08-30 08:27:56,232 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 96 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-30 08:27:56,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 114 transitions, 531 flow [2023-08-30 08:27:56,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:27:56,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:27:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 817 transitions. [2023-08-30 08:27:56,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840047393364929 [2023-08-30 08:27:56,233 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 817 transitions. [2023-08-30 08:27:56,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 817 transitions. [2023-08-30 08:27:56,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:56,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 817 transitions. [2023-08-30 08:27:56,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:56,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:56,238 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:56,238 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 172 flow. Second operand 4 states and 817 transitions. [2023-08-30 08:27:56,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 114 transitions, 531 flow [2023-08-30 08:27:56,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 114 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:27:56,251 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 163 flow [2023-08-30 08:27:56,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-08-30 08:27:56,251 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2023-08-30 08:27:56,252 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 163 flow [2023-08-30 08:27:56,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:56,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:56,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:56,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 08:27:56,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:27:56,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1130353965, now seen corresponding path program 1 times [2023-08-30 08:27:56,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:56,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273238711] [2023-08-30 08:27:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:56,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:27:56,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:56,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273238711] [2023-08-30 08:27:56,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273238711] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:27:56,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560205347] [2023-08-30 08:27:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:56,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:27:56,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:27:56,322 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 08:27:56,323 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 08:27:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:56,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:27:56,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:27:56,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:27:56,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:27:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:27:56,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560205347] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:27:56,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:27:56,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 08:27:56,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476648069] [2023-08-30 08:27:56,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:27:56,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 08:27:56,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:56,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 08:27:56,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:27:56,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 422 [2023-08-30 08:27:56,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 163 flow. Second operand has 8 states, 8 states have (on average 180.375) internal successors, (1443), 8 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:56,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:56,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 422 [2023-08-30 08:27:56,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:03,584 INFO L130 PetriNetUnfolder]: 76189/103889 cut-off events. [2023-08-30 08:28:03,585 INFO L131 PetriNetUnfolder]: For 26308/26308 co-relation queries the response was YES. [2023-08-30 08:28:04,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241280 conditions, 103889 events. 76189/103889 cut-off events. For 26308/26308 co-relation queries the response was YES. Maximal size of possible extension queue 3151. Compared 721926 event pairs, 19229 based on Foata normal form. 1784/84265 useless extension candidates. Maximal degree in co-relation 234370. Up to 41294 conditions per place. [2023-08-30 08:28:04,420 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 97 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-30 08:28:04,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 117 transitions, 555 flow [2023-08-30 08:28:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:28:04,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:28:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 811 transitions. [2023-08-30 08:28:04,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48045023696682465 [2023-08-30 08:28:04,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 811 transitions. [2023-08-30 08:28:04,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 811 transitions. [2023-08-30 08:28:04,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:04,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 811 transitions. [2023-08-30 08:28:04,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:04,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:04,424 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:04,424 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 163 flow. Second operand 4 states and 811 transitions. [2023-08-30 08:28:04,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 117 transitions, 555 flow [2023-08-30 08:28:04,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 544 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:28:04,432 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 169 flow [2023-08-30 08:28:04,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-08-30 08:28:04,433 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2023-08-30 08:28:04,433 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 169 flow [2023-08-30 08:28:04,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.375) internal successors, (1443), 8 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:04,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:04,434 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:04,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 08:28:04,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:28:04,634 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:04,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:04,635 INFO L85 PathProgramCache]: Analyzing trace with hash -363326056, now seen corresponding path program 1 times [2023-08-30 08:28:04,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:04,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279815244] [2023-08-30 08:28:04,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:04,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:28:04,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279815244] [2023-08-30 08:28:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279815244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:04,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:04,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:28:04,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566022928] [2023-08-30 08:28:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:04,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 08:28:04,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:04,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:04,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 08:28:04,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:11,819 INFO L130 PetriNetUnfolder]: 75837/104359 cut-off events. [2023-08-30 08:28:11,820 INFO L131 PetriNetUnfolder]: For 41037/41037 co-relation queries the response was YES. [2023-08-30 08:28:12,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252893 conditions, 104359 events. 75837/104359 cut-off events. For 41037/41037 co-relation queries the response was YES. Maximal size of possible extension queue 3170. Compared 723916 event pairs, 10857 based on Foata normal form. 0/83102 useless extension candidates. Maximal degree in co-relation 225183. Up to 78144 conditions per place. [2023-08-30 08:28:12,703 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 63 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-08-30 08:28:12,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 79 transitions, 384 flow [2023-08-30 08:28:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-30 08:28:12,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4802527646129542 [2023-08-30 08:28:12,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-30 08:28:12,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-30 08:28:12,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:12,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-30 08:28:12,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:12,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:12,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:12,707 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 169 flow. Second operand 3 states and 608 transitions. [2023-08-30 08:28:12,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 79 transitions, 384 flow [2023-08-30 08:28:12,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:28:12,717 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 167 flow [2023-08-30 08:28:12,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-08-30 08:28:12,718 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2023-08-30 08:28:12,718 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 167 flow [2023-08-30 08:28:12,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:12,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:12,718 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:12,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 08:28:12,718 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:12,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash -363325850, now seen corresponding path program 1 times [2023-08-30 08:28:12,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:12,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751088640] [2023-08-30 08:28:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:12,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:28:12,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:12,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751088640] [2023-08-30 08:28:12,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751088640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:12,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:12,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:28:12,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137484026] [2023-08-30 08:28:12,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:12,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:12,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:12,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:12,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:12,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 422 [2023-08-30 08:28:12,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:12,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:12,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 422 [2023-08-30 08:28:12,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:19,009 INFO L130 PetriNetUnfolder]: 68445/94855 cut-off events. [2023-08-30 08:28:19,010 INFO L131 PetriNetUnfolder]: For 35455/35455 co-relation queries the response was YES. [2023-08-30 08:28:19,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229510 conditions, 94855 events. 68445/94855 cut-off events. For 35455/35455 co-relation queries the response was YES. Maximal size of possible extension queue 2851. Compared 657159 event pairs, 10857 based on Foata normal form. 0/76694 useless extension candidates. Maximal degree in co-relation 205867. Up to 68640 conditions per place. [2023-08-30 08:28:19,999 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 62 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2023-08-30 08:28:20,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 378 flow [2023-08-30 08:28:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-30 08:28:20,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794628751974723 [2023-08-30 08:28:20,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-30 08:28:20,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-30 08:28:20,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:20,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-30 08:28:20,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:20,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:20,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:20,004 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 167 flow. Second operand 3 states and 607 transitions. [2023-08-30 08:28:20,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 378 flow [2023-08-30 08:28:20,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:28:20,314 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 166 flow [2023-08-30 08:28:20,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2023-08-30 08:28:20,315 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2023-08-30 08:28:20,315 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 166 flow [2023-08-30 08:28:20,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:20,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:20,316 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:20,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-30 08:28:20,316 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:20,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash -633386629, now seen corresponding path program 1 times [2023-08-30 08:28:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:20,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80633878] [2023-08-30 08:28:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:20,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:28:20,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:20,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80633878] [2023-08-30 08:28:20,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80633878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:20,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:20,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:28:20,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241514205] [2023-08-30 08:28:20,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:20,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:28:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:20,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:28:20,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:28:20,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 422 [2023-08-30 08:28:20,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:20,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:20,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 422 [2023-08-30 08:28:20,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:29,857 INFO L130 PetriNetUnfolder]: 103029/140839 cut-off events. [2023-08-30 08:28:29,857 INFO L131 PetriNetUnfolder]: For 54351/54351 co-relation queries the response was YES. [2023-08-30 08:28:30,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341734 conditions, 140839 events. 103029/140839 cut-off events. For 54351/54351 co-relation queries the response was YES. Maximal size of possible extension queue 4019. Compared 995085 event pairs, 8803 based on Foata normal form. 0/117132 useless extension candidates. Maximal degree in co-relation 306573. Up to 65736 conditions per place. [2023-08-30 08:28:31,284 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 92 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2023-08-30 08:28:31,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 109 transitions, 552 flow [2023-08-30 08:28:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:28:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:28:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 808 transitions. [2023-08-30 08:28:31,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4786729857819905 [2023-08-30 08:28:31,285 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 808 transitions. [2023-08-30 08:28:31,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 808 transitions. [2023-08-30 08:28:31,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:31,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 808 transitions. [2023-08-30 08:28:31,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:31,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:31,288 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:31,288 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 166 flow. Second operand 4 states and 808 transitions. [2023-08-30 08:28:31,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 109 transitions, 552 flow [2023-08-30 08:28:31,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 109 transitions, 549 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:28:31,375 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 175 flow [2023-08-30 08:28:31,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2023-08-30 08:28:31,375 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 8 predicate places. [2023-08-30 08:28:31,375 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 175 flow [2023-08-30 08:28:31,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:31,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:31,376 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:31,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-30 08:28:31,376 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:31,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:31,377 INFO L85 PathProgramCache]: Analyzing trace with hash -633386631, now seen corresponding path program 1 times [2023-08-30 08:28:31,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:31,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232782971] [2023-08-30 08:28:31,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:31,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:28:31,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:31,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232782971] [2023-08-30 08:28:31,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232782971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:31,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:31,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:28:31,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078143322] [2023-08-30 08:28:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:31,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:28:31,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:28:31,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:28:31,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 422 [2023-08-30 08:28:31,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:31,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:31,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 422 [2023-08-30 08:28:31,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:42,004 INFO L130 PetriNetUnfolder]: 94577/129835 cut-off events. [2023-08-30 08:28:42,004 INFO L131 PetriNetUnfolder]: For 57377/57377 co-relation queries the response was YES. [2023-08-30 08:28:42,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326549 conditions, 129835 events. 94577/129835 cut-off events. For 57377/57377 co-relation queries the response was YES. Maximal size of possible extension queue 3664. Compared 908190 event pairs, 50935 based on Foata normal form. 2376/116032 useless extension candidates. Maximal degree in co-relation 293196. Up to 74764 conditions per place. [2023-08-30 08:28:43,163 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 65 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-30 08:28:43,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 82 transitions, 409 flow [2023-08-30 08:28:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:43,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-30 08:28:43,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731437598736177 [2023-08-30 08:28:43,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-30 08:28:43,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-30 08:28:43,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:43,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-30 08:28:43,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,166 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 175 flow. Second operand 3 states and 599 transitions. [2023-08-30 08:28:43,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 82 transitions, 409 flow [2023-08-30 08:28:43,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:28:43,228 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 182 flow [2023-08-30 08:28:43,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2023-08-30 08:28:43,229 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2023-08-30 08:28:43,229 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 182 flow [2023-08-30 08:28:43,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:43,229 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:43,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-30 08:28:43,230 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:43,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:43,230 INFO L85 PathProgramCache]: Analyzing trace with hash -669264841, now seen corresponding path program 1 times [2023-08-30 08:28:43,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:43,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072063740] [2023-08-30 08:28:43,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:43,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:28:43,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:43,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072063740] [2023-08-30 08:28:43,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072063740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:28:43,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563801443] [2023-08-30 08:28:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:43,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:28:43,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:28:43,284 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 08:28:43,287 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 08:28:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:43,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:28:43,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:28:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:28:43,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:28:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:28:43,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563801443] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:28:43,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:28:43,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 08:28:43,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299059045] [2023-08-30 08:28:43,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:28:43,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 08:28:43,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:43,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 08:28:43,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:28:43,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 422 [2023-08-30 08:28:43,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 182 flow. Second operand has 8 states, 8 states have (on average 180.5) internal successors, (1444), 8 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:43,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 422 [2023-08-30 08:28:43,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:54,321 INFO L130 PetriNetUnfolder]: 102841/140143 cut-off events. [2023-08-30 08:28:54,321 INFO L131 PetriNetUnfolder]: For 74743/74743 co-relation queries the response was YES. [2023-08-30 08:28:55,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363210 conditions, 140143 events. 102841/140143 cut-off events. For 74743/74743 co-relation queries the response was YES. Maximal size of possible extension queue 3845. Compared 992902 event pairs, 23927 based on Foata normal form. 0/126295 useless extension candidates. Maximal degree in co-relation 326254. Up to 55560 conditions per place. [2023-08-30 08:28:55,878 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 92 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2023-08-30 08:28:55,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 111 transitions, 596 flow [2023-08-30 08:28:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:28:55,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:28:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 800 transitions. [2023-08-30 08:28:55,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47393364928909953 [2023-08-30 08:28:55,880 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 800 transitions. [2023-08-30 08:28:55,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 800 transitions. [2023-08-30 08:28:55,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:55,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 800 transitions. [2023-08-30 08:28:55,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:55,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:55,882 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:55,882 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 182 flow. Second operand 4 states and 800 transitions. [2023-08-30 08:28:55,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 111 transitions, 596 flow [2023-08-30 08:28:55,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 111 transitions, 584 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:28:55,933 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 189 flow [2023-08-30 08:28:55,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2023-08-30 08:28:55,933 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2023-08-30 08:28:55,933 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 189 flow [2023-08-30 08:28:55,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.5) internal successors, (1444), 8 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:55,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:55,934 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:55,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 08:28:56,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:28:56,135 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:56,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:56,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1087049024, now seen corresponding path program 1 times [2023-08-30 08:28:56,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:56,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511408606] [2023-08-30 08:28:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:56,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:28:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:56,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511408606] [2023-08-30 08:28:56,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511408606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:56,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:56,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:28:56,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671041242] [2023-08-30 08:28:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:56,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:28:56,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:56,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:28:56,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:28:56,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 422 [2023-08-30 08:28:56,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:56,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:56,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 422 [2023-08-30 08:28:56,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:12,417 INFO L130 PetriNetUnfolder]: 150265/207883 cut-off events. [2023-08-30 08:29:12,417 INFO L131 PetriNetUnfolder]: For 138464/138464 co-relation queries the response was YES. [2023-08-30 08:29:13,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545574 conditions, 207883 events. 150265/207883 cut-off events. For 138464/138464 co-relation queries the response was YES. Maximal size of possible extension queue 5423. Compared 1541416 event pairs, 16343 based on Foata normal form. 0/190882 useless extension candidates. Maximal degree in co-relation 490504. Up to 88704 conditions per place. [2023-08-30 08:29:14,679 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 90 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-30 08:29:14,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 603 flow [2023-08-30 08:29:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:29:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:29:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 800 transitions. [2023-08-30 08:29:14,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47393364928909953 [2023-08-30 08:29:14,680 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 800 transitions. [2023-08-30 08:29:14,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 800 transitions. [2023-08-30 08:29:14,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:14,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 800 transitions. [2023-08-30 08:29:14,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:14,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:14,682 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:14,682 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 189 flow. Second operand 4 states and 800 transitions. [2023-08-30 08:29:14,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 603 flow [2023-08-30 08:29:14,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:29:14,796 INFO L231 Difference]: Finished difference. Result has 76 places, 53 transitions, 197 flow [2023-08-30 08:29:14,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2023-08-30 08:29:14,797 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2023-08-30 08:29:14,797 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 197 flow [2023-08-30 08:29:14,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:14,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:14,798 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:14,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-30 08:29:14,798 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:14,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:14,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1087049025, now seen corresponding path program 1 times [2023-08-30 08:29:14,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:14,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764228077] [2023-08-30 08:29:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:14,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:29:14,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:14,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764228077] [2023-08-30 08:29:14,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764228077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:14,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:14,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:29:14,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384400235] [2023-08-30 08:29:14,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:14,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:29:14,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:14,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:29:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:29:14,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 422 [2023-08-30 08:29:14,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:14,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:14,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 422 [2023-08-30 08:29:14,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:30,731 INFO L130 PetriNetUnfolder]: 139417/194347 cut-off events. [2023-08-30 08:29:30,731 INFO L131 PetriNetUnfolder]: For 130706/130706 co-relation queries the response was YES. [2023-08-30 08:29:31,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519656 conditions, 194347 events. 139417/194347 cut-off events. For 130706/130706 co-relation queries the response was YES. Maximal size of possible extension queue 5025. Compared 1442899 event pairs, 77975 based on Foata normal form. 3168/189778 useless extension candidates. Maximal degree in co-relation 467470. Up to 113380 conditions per place. [2023-08-30 08:29:32,663 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 64 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-30 08:29:32,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 444 flow [2023-08-30 08:29:32,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-08-30 08:29:32,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46919431279620855 [2023-08-30 08:29:32,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-08-30 08:29:32,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-08-30 08:29:32,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:32,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-08-30 08:29:32,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:32,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:32,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:32,665 INFO L175 Difference]: Start difference. First operand has 76 places, 53 transitions, 197 flow. Second operand 3 states and 594 transitions. [2023-08-30 08:29:32,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 444 flow [2023-08-30 08:29:33,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:29:33,739 INFO L231 Difference]: Finished difference. Result has 78 places, 53 transitions, 204 flow [2023-08-30 08:29:33,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2023-08-30 08:29:33,740 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2023-08-30 08:29:33,740 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 204 flow [2023-08-30 08:29:33,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:33,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:33,740 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:33,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-30 08:29:33,740 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:33,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2100700647, now seen corresponding path program 1 times [2023-08-30 08:29:33,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:33,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137453212] [2023-08-30 08:29:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:33,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:29:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137453212] [2023-08-30 08:29:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137453212] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755094926] [2023-08-30 08:29:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:33,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:33,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:33,785 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 08:29:33,812 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 08:29:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:33,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:29:33,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:29:33,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:29:33,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755094926] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:33,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:33,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 08:29:33,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463808469] [2023-08-30 08:29:33,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:33,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 08:29:33,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:33,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 08:29:33,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:29:33,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 422 [2023-08-30 08:29:33,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 180.625) internal successors, (1445), 8 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 08:29:33,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:33,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 422 [2023-08-30 08:29:33,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:51,655 INFO L130 PetriNetUnfolder]: 150641/206491 cut-off events. [2023-08-30 08:29:51,655 INFO L131 PetriNetUnfolder]: For 156734/156734 co-relation queries the response was YES. [2023-08-30 08:29:52,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571761 conditions, 206491 events. 150641/206491 cut-off events. For 156734/156734 co-relation queries the response was YES. Maximal size of possible extension queue 5204. Compared 1509531 event pairs, 32663 based on Foata normal form. 3456/202864 useless extension candidates. Maximal degree in co-relation 514450. Up to 80496 conditions per place. [2023-08-30 08:29:53,664 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 90 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-08-30 08:29:53,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 640 flow [2023-08-30 08:29:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:29:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:29:53,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 792 transitions. [2023-08-30 08:29:53,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46919431279620855 [2023-08-30 08:29:53,666 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 792 transitions. [2023-08-30 08:29:53,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 792 transitions. [2023-08-30 08:29:53,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:53,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 792 transitions. [2023-08-30 08:29:53,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:53,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:53,668 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:53,668 INFO L175 Difference]: Start difference. First operand has 78 places, 53 transitions, 204 flow. Second operand 4 states and 792 transitions. [2023-08-30 08:29:53,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 640 flow [2023-08-30 08:29:54,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 626 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:29:54,434 INFO L231 Difference]: Finished difference. Result has 78 places, 53 transitions, 209 flow [2023-08-30 08:29:54,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2023-08-30 08:29:54,435 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2023-08-30 08:29:54,435 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 209 flow [2023-08-30 08:29:54,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.625) internal successors, (1445), 8 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 08:29:54,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:54,436 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:54,447 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 08:29:54,641 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,SelfDestructingSolverStorable50 [2023-08-30 08:29:54,641 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:54,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:54,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1932781010, now seen corresponding path program 1 times [2023-08-30 08:29:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385109315] [2023-08-30 08:29:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:29:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385109315] [2023-08-30 08:29:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385109315] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780601694] [2023-08-30 08:29:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:54,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:54,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:54,693 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 08:29:54,706 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 08:29:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:54,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:29:54,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:29:54,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:29:54,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780601694] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:54,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:54,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 08:29:54,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100334649] [2023-08-30 08:29:54,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:54,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 08:29:54,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:54,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 08:29:54,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:29:54,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 422 [2023-08-30 08:29:54,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 209 flow. Second operand has 8 states, 8 states have (on average 180.75) internal successors, (1446), 8 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 08:29:54,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:54,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 422 [2023-08-30 08:29:54,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:15,640 INFO L130 PetriNetUnfolder]: 164041/227035 cut-off events. [2023-08-30 08:30:15,641 INFO L131 PetriNetUnfolder]: For 185578/185578 co-relation queries the response was YES. [2023-08-30 08:30:17,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638744 conditions, 227035 events. 164041/227035 cut-off events. For 185578/185578 co-relation queries the response was YES. Maximal size of possible extension queue 5604. Compared 1693268 event pairs, 40295 based on Foata normal form. 3456/222178 useless extension candidates. Maximal degree in co-relation 575050. Up to 81216 conditions per place. [2023-08-30 08:30:17,245 INFO L137 encePairwiseOnDemand]: 418/422 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2023-08-30 08:30:17,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 107 transitions, 637 flow [2023-08-30 08:30:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:30:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:30:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 787 transitions. [2023-08-30 08:30:17,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662322274881517 [2023-08-30 08:30:17,246 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 787 transitions. [2023-08-30 08:30:17,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 787 transitions. [2023-08-30 08:30:17,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:17,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 787 transitions. [2023-08-30 08:30:17,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:17,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:17,249 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:17,249 INFO L175 Difference]: Start difference. First operand has 78 places, 53 transitions, 209 flow. Second operand 4 states and 787 transitions. [2023-08-30 08:30:17,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 107 transitions, 637 flow [2023-08-30 08:30:18,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 107 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:30:18,135 INFO L231 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2023-08-30 08:30:18,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2023-08-30 08:30:18,136 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2023-08-30 08:30:18,136 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2023-08-30 08:30:18,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.75) internal successors, (1446), 8 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 08:30:18,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 08:30:18,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 08:30:18,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 08:30:18,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 08:30:18,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 08:30:18,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 08:30:18,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 08:30:18,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 08:30:18,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 08:30:18,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 08:30:18,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 08:30:18,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 08:30:18,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 08:30:18,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 08:30:18,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 08:30:18,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 08:30:18,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 08:30:18,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 08:30:18,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 08:30:18,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 08:30:18,145 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 08:30:18,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:30:18,344 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:30:18,344 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 08:30:18,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 217 transitions, 466 flow [2023-08-30 08:30:18,370 INFO L130 PetriNetUnfolder]: 25/263 cut-off events. [2023-08-30 08:30:18,370 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 08:30:18,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 263 events. 25/263 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 213. Up to 10 conditions per place. [2023-08-30 08:30:18,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 217 transitions, 466 flow [2023-08-30 08:30:18,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 217 transitions, 466 flow [2023-08-30 08:30:18,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:30:18,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 217 transitions, 466 flow [2023-08-30 08:30:18,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 217 transitions, 466 flow [2023-08-30 08:30:18,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 217 transitions, 466 flow [2023-08-30 08:30:18,399 INFO L130 PetriNetUnfolder]: 25/263 cut-off events. [2023-08-30 08:30:18,399 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 08:30:18,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 263 events. 25/263 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 213. Up to 10 conditions per place. [2023-08-30 08:30:18,408 INFO L119 LiptonReduction]: Number of co-enabled transitions 29520 [2023-08-30 08:30:21,555 INFO L134 LiptonReduction]: Checked pairs total: 49629 [2023-08-30 08:30:21,555 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-08-30 08:30:21,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:30:21,556 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;@21a0af86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:30:21,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:30:21,560 INFO L130 PetriNetUnfolder]: 6/68 cut-off events. [2023-08-30 08:30:21,561 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 08:30:21,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:21,561 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-30 08:30:21,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:30:21,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:21,561 INFO L85 PathProgramCache]: Analyzing trace with hash 769352617, now seen corresponding path program 1 times [2023-08-30 08:30:21,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:21,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075920645] [2023-08-30 08:30:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:21,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:30:21,578 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:30:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:30:21,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:30:21,587 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:30:21,587 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:30:21,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-30 08:30:21,587 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:30:21,588 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:30:21,588 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:30:21,588 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-30 08:30:21,611 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:30:21,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 263 transitions, 571 flow [2023-08-30 08:30:21,638 INFO L130 PetriNetUnfolder]: 31/321 cut-off events. [2023-08-30 08:30:21,638 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 08:30:21,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 321 events. 31/321 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 979 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 276. Up to 12 conditions per place. [2023-08-30 08:30:21,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 263 transitions, 571 flow [2023-08-30 08:30:21,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 263 transitions, 571 flow [2023-08-30 08:30:21,644 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:30:21,645 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 263 transitions, 571 flow [2023-08-30 08:30:21,645 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 263 transitions, 571 flow [2023-08-30 08:30:21,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 263 transitions, 571 flow [2023-08-30 08:30:21,682 INFO L130 PetriNetUnfolder]: 31/321 cut-off events. [2023-08-30 08:30:21,682 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 08:30:21,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 321 events. 31/321 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 979 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 276. Up to 12 conditions per place. [2023-08-30 08:30:21,698 INFO L119 LiptonReduction]: Number of co-enabled transitions 47250 [2023-08-30 08:30:25,336 INFO L134 LiptonReduction]: Checked pairs total: 79981 [2023-08-30 08:30:25,336 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-30 08:30:25,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:30:25,337 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;@21a0af86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:30:25,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-30 08:30:25,339 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 08:30:25,339 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:30:25,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:25,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:30:25,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 08:30:25,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:25,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1754672033, now seen corresponding path program 1 times [2023-08-30 08:30:25,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:25,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098629438] [2023-08-30 08:30:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:25,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:25,367 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 08:30:25,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:25,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098629438] [2023-08-30 08:30:25,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098629438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:25,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:25,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:30:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088265252] [2023-08-30 08:30:25,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:25,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:25,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:25,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 517 [2023-08-30 08:30:25,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:25,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:25,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 517 [2023-08-30 08:30:25,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:13,796 INFO L130 PetriNetUnfolder]: 593396/738877 cut-off events. [2023-08-30 08:31:13,796 INFO L131 PetriNetUnfolder]: For 111540/111540 co-relation queries the response was YES. [2023-08-30 08:31:15,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506589 conditions, 738877 events. 593396/738877 cut-off events. For 111540/111540 co-relation queries the response was YES. Maximal size of possible extension queue 23220. Compared 4775897 event pairs, 185180 based on Foata normal form. 0/444313 useless extension candidates. Maximal degree in co-relation 146504. Up to 656098 conditions per place. [2023-08-30 08:31:19,595 INFO L137 encePairwiseOnDemand]: 514/517 looper letters, 92 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2023-08-30 08:31:19,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 115 transitions, 493 flow [2023-08-30 08:31:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:31:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:31:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 762 transitions. [2023-08-30 08:31:19,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4912959381044487 [2023-08-30 08:31:19,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 762 transitions. [2023-08-30 08:31:19,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 762 transitions. [2023-08-30 08:31:19,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:19,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 762 transitions. [2023-08-30 08:31:19,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:19,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:19,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:19,599 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 197 flow. Second operand 3 states and 762 transitions. [2023-08-30 08:31:19,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 115 transitions, 493 flow [2023-08-30 08:31:19,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 115 transitions, 461 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-08-30 08:31:19,637 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 175 flow [2023-08-30 08:31:19,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-08-30 08:31:19,637 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-08-30 08:31:19,637 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 175 flow [2023-08-30 08:31:19,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:19,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:19,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:31:19,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-30 08:31:19,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 08:31:19,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1754671785, now seen corresponding path program 1 times [2023-08-30 08:31:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:19,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455603982] [2023-08-30 08:31:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:19,663 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 08:31:19,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:19,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455603982] [2023-08-30 08:31:19,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455603982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:19,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:19,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:31:19,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933642410] [2023-08-30 08:31:19,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:19,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:31:19,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:31:19,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:31:19,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 517 [2023-08-30 08:31:19,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:19,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:19,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 517 [2023-08-30 08:31:19,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:07,702 INFO L130 PetriNetUnfolder]: 539643/693666 cut-off events. [2023-08-30 08:32:07,702 INFO L131 PetriNetUnfolder]: For 34297/34297 co-relation queries the response was YES. [2023-08-30 08:32:10,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370024 conditions, 693666 events. 539643/693666 cut-off events. For 34297/34297 co-relation queries the response was YES. Maximal size of possible extension queue 22062. Compared 5101292 event pairs, 44288 based on Foata normal form. 0/428675 useless extension candidates. Maximal degree in co-relation 1369910. Up to 575931 conditions per place. [2023-08-30 08:32:13,616 INFO L137 encePairwiseOnDemand]: 515/517 looper letters, 91 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2023-08-30 08:32:13,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 459 flow [2023-08-30 08:32:13,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:32:13,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:32:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-30 08:32:13,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2023-08-30 08:32:13,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-30 08:32:13,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-30 08:32:13,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:13,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-30 08:32:13,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:13,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:13,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:13,619 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 175 flow. Second operand 3 states and 759 transitions. [2023-08-30 08:32:13,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 459 flow [2023-08-30 08:32:13,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 114 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:32:13,643 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 174 flow [2023-08-30 08:32:13,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2023-08-30 08:32:13,643 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-08-30 08:32:13,643 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 174 flow [2023-08-30 08:32:13,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:13,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:13,644 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:32:13,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-30 08:32:13,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 08:32:13,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:13,645 INFO L85 PathProgramCache]: Analyzing trace with hash -333033747, now seen corresponding path program 1 times [2023-08-30 08:32:13,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:13,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111586279] [2023-08-30 08:32:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:13,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:13,674 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 08:32:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111586279] [2023-08-30 08:32:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111586279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:32:13,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:32:13,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:32:13,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097232381] [2023-08-30 08:32:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:32:13,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:32:13,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:13,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:32:13,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:32:13,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 517 [2023-08-30 08:32:13,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:13,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:13,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 517 [2023-08-30 08:32:13,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:57,878 INFO L130 PetriNetUnfolder]: 537819/687863 cut-off events. [2023-08-30 08:32:57,878 INFO L131 PetriNetUnfolder]: For 34299/34299 co-relation queries the response was YES. [2023-08-30 08:33:00,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378920 conditions, 687863 events. 537819/687863 cut-off events. For 34299/34299 co-relation queries the response was YES. Maximal size of possible extension queue 21795. Compared 4988144 event pairs, 39199 based on Foata normal form. 0/424795 useless extension candidates. Maximal degree in co-relation 1180675. Up to 583168 conditions per place. [2023-08-30 08:33:03,594 INFO L137 encePairwiseOnDemand]: 515/517 looper letters, 89 selfloop transitions, 1 changer transitions 0/111 dead transitions. [2023-08-30 08:33:03,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 448 flow [2023-08-30 08:33:03,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:33:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:33:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2023-08-30 08:33:03,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880722114764668 [2023-08-30 08:33:03,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2023-08-30 08:33:03,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2023-08-30 08:33:03,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:33:03,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2023-08-30 08:33:03,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:03,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:03,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:03,598 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 174 flow. Second operand 3 states and 757 transitions. [2023-08-30 08:33:03,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 448 flow [2023-08-30 08:33:03,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:33:03,641 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 173 flow [2023-08-30 08:33:03,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-30 08:33:03,641 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-08-30 08:33:03,642 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 173 flow [2023-08-30 08:33:03,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:03,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:33:03,642 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:33:03,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-30 08:33:03,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 08:33:03,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:33:03,643 INFO L85 PathProgramCache]: Analyzing trace with hash -333033456, now seen corresponding path program 1 times [2023-08-30 08:33:03,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:33:03,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583236048] [2023-08-30 08:33:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:33:03,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:33:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:33:03,674 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 08:33:03,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:33:03,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583236048] [2023-08-30 08:33:03,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583236048] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:33:03,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:33:03,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:33:03,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414290724] [2023-08-30 08:33:03,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:33:03,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:33:03,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:33:03,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:33:03,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:33:03,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 517 [2023-08-30 08:33:03,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:03,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:33:03,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 517 [2023-08-30 08:33:03,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:33:42,647 INFO L130 PetriNetUnfolder]: 470707/589679 cut-off events. [2023-08-30 08:33:42,647 INFO L131 PetriNetUnfolder]: For 30468/30468 co-relation queries the response was YES. [2023-08-30 08:33:44,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217136 conditions, 589679 events. 470707/589679 cut-off events. For 30468/30468 co-relation queries the response was YES. Maximal size of possible extension queue 18368. Compared 3812602 event pairs, 118255 based on Foata normal form. 0/370393 useless extension candidates. Maximal degree in co-relation 1041984. Up to 511912 conditions per place. [2023-08-30 08:33:47,659 INFO L137 encePairwiseOnDemand]: 515/517 looper letters, 88 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-08-30 08:33:47,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 110 transitions, 444 flow [2023-08-30 08:33:47,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:33:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:33:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 756 transitions. [2023-08-30 08:33:47,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4874274661508704 [2023-08-30 08:33:47,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 756 transitions. [2023-08-30 08:33:47,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 756 transitions. [2023-08-30 08:33:47,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:33:47,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 756 transitions. [2023-08-30 08:33:47,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:47,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:47,662 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:47,662 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 173 flow. Second operand 3 states and 756 transitions. [2023-08-30 08:33:47,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 110 transitions, 444 flow [2023-08-30 08:33:47,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 110 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:33:47,722 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 172 flow [2023-08-30 08:33:47,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-30 08:33:47,723 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-08-30 08:33:47,723 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 172 flow [2023-08-30 08:33:47,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:47,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:33:47,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:33:47,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-30 08:33:47,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 08:33:47,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:33:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2104350496, now seen corresponding path program 1 times [2023-08-30 08:33:47,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:33:47,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373631248] [2023-08-30 08:33:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:33:47,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:33:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:33:47,748 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 08:33:47,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:33:47,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373631248] [2023-08-30 08:33:47,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373631248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:33:47,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:33:47,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:33:47,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068718996] [2023-08-30 08:33:47,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:33:47,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:33:47,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:33:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:33:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:33:47,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 517 [2023-08-30 08:33:47,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:47,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:33:47,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 517 [2023-08-30 08:33:47,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:35:09,392 INFO L130 PetriNetUnfolder]: 779123/1015701 cut-off events. [2023-08-30 08:35:09,393 INFO L131 PetriNetUnfolder]: For 48911/48911 co-relation queries the response was YES. [2023-08-30 08:35:13,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042937 conditions, 1015701 events. 779123/1015701 cut-off events. For 48911/48911 co-relation queries the response was YES. Maximal size of possible extension queue 28649. Compared 7735184 event pairs, 353021 based on Foata normal form. 0/650988 useless extension candidates. Maximal degree in co-relation 1081746. Up to 498824 conditions per place. [2023-08-30 08:35:17,862 INFO L137 encePairwiseOnDemand]: 512/517 looper letters, 132 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2023-08-30 08:35:17,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 156 transitions, 658 flow [2023-08-30 08:35:17,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:35:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:35:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1009 transitions. [2023-08-30 08:35:17,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879110251450677 [2023-08-30 08:35:17,864 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1009 transitions. [2023-08-30 08:35:17,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1009 transitions. [2023-08-30 08:35:17,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:35:17,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1009 transitions. [2023-08-30 08:35:17,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:35:17,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 517.0) internal successors, (2585), 5 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:35:17,867 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 517.0) internal successors, (2585), 5 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:35:17,867 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 172 flow. Second operand 4 states and 1009 transitions. [2023-08-30 08:35:17,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 156 transitions, 658 flow [2023-08-30 08:35:17,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 156 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:35:17,909 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 194 flow [2023-08-30 08:35:17,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2023-08-30 08:35:17,910 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2023-08-30 08:35:17,910 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 194 flow [2023-08-30 08:35:17,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:35:17,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:35:17,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:35:17,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-30 08:35:17,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 08:35:17,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:35:17,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2104350498, now seen corresponding path program 1 times [2023-08-30 08:35:17,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:35:17,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718281081] [2023-08-30 08:35:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:35:17,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:35:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:35:17,945 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 08:35:17,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:35:17,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718281081] [2023-08-30 08:35:17,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718281081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:35:17,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:35:17,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:35:17,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907596263] [2023-08-30 08:35:17,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:35:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:35:17,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:35:17,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:35:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:35:17,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 517 [2023-08-30 08:35:17,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:35:17,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:35:17,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 517 [2023-08-30 08:35:17,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand