./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:20:56,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:20:56,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:20:56,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:20:56,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:20:56,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:20:56,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:20:56,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:20:56,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:20:56,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:20:56,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:20:56,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:20:56,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:20:56,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:20:56,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:20:56,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:20:56,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:20:56,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:20:56,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:20:56,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:20:56,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:20:56,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:20:56,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:20:56,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:20:56,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:20:56,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:20:56,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:20:56,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:20:56,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:20:56,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:20:56,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:20:56,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:20:56,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:20:56,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:20:56,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:20:56,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:20:56,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:20:56,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:20:56,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:20:56,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:20:56,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:20:56,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:20:56,514 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:20:56,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:20:56,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:20:56,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:20:56,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:20:56,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:20:56,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:20:56,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:20:56,518 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:20:56,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:20:56,519 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:20:56,519 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:20:56,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:20:56,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:20:56,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:20:56,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:20:56,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:20:56,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:20:56,520 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:20:56,521 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:20:56,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:20:56,521 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:20:56,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:20:56,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:20:56,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:20:56,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:20:56,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:20:56,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:20:56,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:20:56,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:20:56,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:20:56,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:20:56,523 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:20:56,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:20:56,524 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:20:56,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:20:56,524 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:20:56,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:20:56,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:20:56,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:20:56,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:20:56,876 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:20:56,877 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:20:56,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-30 14:20:58,059 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:20:58,321 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:20:58,322 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-30 14:20:58,351 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f3d449a6/0196f9fcb25e4166a7db6bdcebcf67c4/FLAG166b3b7a3 [2023-08-30 14:20:58,365 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f3d449a6/0196f9fcb25e4166a7db6bdcebcf67c4 [2023-08-30 14:20:58,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:20:58,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:20:58,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:20:58,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:20:58,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:20:58,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:58,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1712772a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58, skipping insertion in model container [2023-08-30 14:20:58,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:58,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:20:58,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:20:58,750 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2023-08-30 14:20:58,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:20:58,813 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:20:58,851 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2023-08-30 14:20:58,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:20:58,960 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:20:58,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58 WrapperNode [2023-08-30 14:20:58,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:20:58,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:20:58,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:20:58,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:20:58,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,038 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 204 [2023-08-30 14:20:59,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:20:59,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:20:59,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:20:59,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:20:59,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,095 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:20:59,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:20:59,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:20:59,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:20:59,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (1/1) ... [2023-08-30 14:20:59,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:20:59,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:20:59,146 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 14:20:59,171 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 14:20:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:20:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:20:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:20:59,189 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:20:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:20:59,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:20:59,191 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 14:20:59,385 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:20:59,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:20:59,644 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:20:59,652 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:20:59,657 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-30 14:20:59,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:20:59 BoogieIcfgContainer [2023-08-30 14:20:59,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:20:59,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:20:59,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:20:59,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:20:59,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:20:58" (1/3) ... [2023-08-30 14:20:59,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2165e4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:20:59, skipping insertion in model container [2023-08-30 14:20:59,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:20:58" (2/3) ... [2023-08-30 14:20:59,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2165e4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:20:59, skipping insertion in model container [2023-08-30 14:20:59,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:20:59" (3/3) ... [2023-08-30 14:20:59,669 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2023-08-30 14:20:59,676 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:20:59,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:20:59,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 14:20:59,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:20:59,811 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:20:59,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 216 transitions, 440 flow [2023-08-30 14:20:59,976 INFO L130 PetriNetUnfolder]: 45/293 cut-off events. [2023-08-30 14:20:59,977 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:20:59,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 293 events. 45/293 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 998 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-08-30 14:20:59,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 216 transitions, 440 flow [2023-08-30 14:20:59,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 213 transitions, 434 flow [2023-08-30 14:21:00,001 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:21:00,030 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 213 transitions, 434 flow [2023-08-30 14:21:00,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 213 transitions, 434 flow [2023-08-30 14:21:00,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 213 transitions, 434 flow [2023-08-30 14:21:00,086 INFO L130 PetriNetUnfolder]: 44/290 cut-off events. [2023-08-30 14:21:00,086 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:21:00,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 290 events. 44/290 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 988 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-08-30 14:21:00,098 INFO L119 LiptonReduction]: Number of co-enabled transitions 13050 [2023-08-30 14:21:03,388 INFO L134 LiptonReduction]: Checked pairs total: 22816 [2023-08-30 14:21:03,389 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 14:21:03,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:21:03,408 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;@3a4b5a76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:21:03,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-30 14:21:03,411 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:21:03,411 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:21:03,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:03,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:21:03,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:21:03,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:03,417 INFO L85 PathProgramCache]: Analyzing trace with hash 27119, now seen corresponding path program 1 times [2023-08-30 14:21:03,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:03,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021963198] [2023-08-30 14:21:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:03,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:03,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:03,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021963198] [2023-08-30 14:21:03,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021963198] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:03,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:03,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:21:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225476821] [2023-08-30 14:21:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:03,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:03,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:03,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 407 [2023-08-30 14:21:03,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 79 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:03,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:03,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 407 [2023-08-30 14:21:03,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:03,882 INFO L130 PetriNetUnfolder]: 454/971 cut-off events. [2023-08-30 14:21:03,883 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:03,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 971 events. 454/971 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5409 event pairs, 414 based on Foata normal form. 131/816 useless extension candidates. Maximal degree in co-relation 1806. Up to 898 conditions per place. [2023-08-30 14:21:03,889 INFO L137 encePairwiseOnDemand]: 380/407 looper letters, 48 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 14:21:03,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 222 flow [2023-08-30 14:21:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 14:21:03,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506961506961507 [2023-08-30 14:21:03,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 14:21:03,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 14:21:03,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:03,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 14:21:03,912 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 14:21:03,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:03,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:03,920 INFO L175 Difference]: Start difference. First operand has 58 places, 79 transitions, 166 flow. Second operand 3 states and 619 transitions. [2023-08-30 14:21:03,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 222 flow [2023-08-30 14:21:03,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:21:03,925 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 134 flow [2023-08-30 14:21:03,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=3, PETRI_FLOW=134, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-08-30 14:21:03,929 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-30 14:21:03,930 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 134 flow [2023-08-30 14:21:03,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:03,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:03,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:21:03,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:21:03,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:21:03,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:03,932 INFO L85 PathProgramCache]: Analyzing trace with hash 842574, now seen corresponding path program 1 times [2023-08-30 14:21:03,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:03,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388613633] [2023-08-30 14:21:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:03,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:04,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:04,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388613633] [2023-08-30 14:21:04,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388613633] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:04,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587834744] [2023-08-30 14:21:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:04,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:04,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:04,055 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 14:21:04,066 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 14:21:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:04,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:21:04,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:04,188 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 14:21:04,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:21:04,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587834744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:04,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:21:04,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:21:04,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546625225] [2023-08-30 14:21:04,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:04,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:21:04,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:04,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:21:04,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:21:04,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 407 [2023-08-30 14:21:04,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 134 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 14:21:04,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:04,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 407 [2023-08-30 14:21:04,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:04,394 INFO L130 PetriNetUnfolder]: 454/970 cut-off events. [2023-08-30 14:21:04,394 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:04,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1882 conditions, 970 events. 454/970 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5406 event pairs, 414 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1870. Up to 896 conditions per place. [2023-08-30 14:21:04,400 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 47 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-30 14:21:04,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 228 flow [2023-08-30 14:21:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:21:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:21:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 774 transitions. [2023-08-30 14:21:04,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47542997542997545 [2023-08-30 14:21:04,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 774 transitions. [2023-08-30 14:21:04,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 774 transitions. [2023-08-30 14:21:04,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:04,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 774 transitions. [2023-08-30 14:21:04,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:04,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:04,412 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:04,412 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 134 flow. Second operand 4 states and 774 transitions. [2023-08-30 14:21:04,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 228 flow [2023-08-30 14:21:04,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 224 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:04,416 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 130 flow [2023-08-30 14:21:04,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 14:21:04,417 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-30 14:21:04,417 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 130 flow [2023-08-30 14:21:04,418 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 14:21:04,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:04,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:21:04,425 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 14:21:04,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:04,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:21:04,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash -666401115, now seen corresponding path program 1 times [2023-08-30 14:21:04,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:04,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215082615] [2023-08-30 14:21:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:04,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:04,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:04,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215082615] [2023-08-30 14:21:04,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215082615] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:04,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866459906] [2023-08-30 14:21:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:04,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:04,702 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 14:21:04,734 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 14:21:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:04,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:21:04,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:04,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:04,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866459906] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:04,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:04,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:21:04,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068867724] [2023-08-30 14:21:04,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:04,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:21:04,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:21:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:21:04,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 407 [2023-08-30 14:21:04,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:04,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:04,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 407 [2023-08-30 14:21:04,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:05,027 INFO L130 PetriNetUnfolder]: 454/973 cut-off events. [2023-08-30 14:21:05,028 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:05,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1891 conditions, 973 events. 454/973 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5410 event pairs, 414 based on Foata normal form. 0/688 useless extension candidates. Maximal degree in co-relation 1879. Up to 897 conditions per place. [2023-08-30 14:21:05,033 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 47 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-08-30 14:21:05,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 246 flow [2023-08-30 14:21:05,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:21:05,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:21:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1135 transitions. [2023-08-30 14:21:05,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46478296478296477 [2023-08-30 14:21:05,036 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1135 transitions. [2023-08-30 14:21:05,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1135 transitions. [2023-08-30 14:21:05,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:05,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1135 transitions. [2023-08-30 14:21:05,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,044 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,045 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 130 flow. Second operand 6 states and 1135 transitions. [2023-08-30 14:21:05,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 246 flow [2023-08-30 14:21:05,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:21:05,048 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 163 flow [2023-08-30 14:21:05,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-30 14:21:05,050 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-08-30 14:21:05,051 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 163 flow [2023-08-30 14:21:05,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:05,052 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 14:21:05,064 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 14:21:05,257 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,SelfDestructingSolverStorable2 [2023-08-30 14:21:05,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:21:05,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:05,258 INFO L85 PathProgramCache]: Analyzing trace with hash -708808540, now seen corresponding path program 2 times [2023-08-30 14:21:05,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:05,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678638894] [2023-08-30 14:21:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:05,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:21:05,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:05,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678638894] [2023-08-30 14:21:05,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678638894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:05,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:05,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:05,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26204845] [2023-08-30 14:21:05,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:05,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:05,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:05,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:05,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:05,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 407 [2023-08-30 14:21:05,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:05,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 407 [2023-08-30 14:21:05,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:05,492 INFO L130 PetriNetUnfolder]: 399/886 cut-off events. [2023-08-30 14:21:05,492 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:21:05,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1742 conditions, 886 events. 399/886 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5295 event pairs, 0 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1726. Up to 787 conditions per place. [2023-08-30 14:21:05,497 INFO L137 encePairwiseOnDemand]: 402/407 looper letters, 67 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 14:21:05,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 335 flow [2023-08-30 14:21:05,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:05,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 14:21:05,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004095004095004 [2023-08-30 14:21:05,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 14:21:05,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 14:21:05,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:05,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 14:21:05,501 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 14:21:05,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,504 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 163 flow. Second operand 3 states and 611 transitions. [2023-08-30 14:21:05,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 335 flow [2023-08-30 14:21:05,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 321 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:05,507 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 153 flow [2023-08-30 14:21:05,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=153, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-08-30 14:21:05,508 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-08-30 14:21:05,508 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 153 flow [2023-08-30 14:21:05,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:05,509 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:05,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:21:05,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:21:05,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:05,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1734819577, now seen corresponding path program 1 times [2023-08-30 14:21:05,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:05,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734771986] [2023-08-30 14:21:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:05,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:21:05,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:05,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734771986] [2023-08-30 14:21:05,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734771986] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:05,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627252642] [2023-08-30 14:21:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:05,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:05,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:05,597 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 14:21:05,614 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 14:21:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:05,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:21:05,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:21:05,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:21:05,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627252642] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:05,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:05,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:21:05,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481378818] [2023-08-30 14:21:05,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:05,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:21:05,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:21:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:21:05,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 407 [2023-08-30 14:21:05,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 153 flow. Second operand has 13 states, 13 states have (on average 181.30769230769232) internal successors, (2357), 13 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:05,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 407 [2023-08-30 14:21:05,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:05,956 INFO L130 PetriNetUnfolder]: 418/876 cut-off events. [2023-08-30 14:21:05,956 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-30 14:21:05,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 876 events. 418/876 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4691 event pairs, 378 based on Foata normal form. 6/670 useless extension candidates. Maximal degree in co-relation 1769. Up to 804 conditions per place. [2023-08-30 14:21:05,961 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 45 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2023-08-30 14:21:05,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 301 flow [2023-08-30 14:21:05,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:21:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:21:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2222 transitions. [2023-08-30 14:21:05,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2023-08-30 14:21:05,968 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2222 transitions. [2023-08-30 14:21:05,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2222 transitions. [2023-08-30 14:21:05,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:05,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2222 transitions. [2023-08-30 14:21:05,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.16666666666666) internal successors, (2222), 12 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 407.0) internal successors, (5291), 13 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,981 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 407.0) internal successors, (5291), 13 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,981 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 153 flow. Second operand 12 states and 2222 transitions. [2023-08-30 14:21:05,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 301 flow [2023-08-30 14:21:05,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:21:05,986 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 233 flow [2023-08-30 14:21:05,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=233, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-08-30 14:21:05,989 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-08-30 14:21:05,989 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 233 flow [2023-08-30 14:21:05,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 181.30769230769232) internal successors, (2357), 13 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:05,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:05,990 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:05,998 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 14:21:06,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:06,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:21:06,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1608922969, now seen corresponding path program 2 times [2023-08-30 14:21:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:06,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206229714] [2023-08-30 14:21:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:06,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:06,223 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:21:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:06,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:21:06,259 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:21:06,259 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-30 14:21:06,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-30 14:21:06,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-30 14:21:06,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-30 14:21:06,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-30 14:21:06,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-30 14:21:06,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-30 14:21:06,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-30 14:21:06,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-30 14:21:06,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-30 14:21:06,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-30 14:21:06,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-30 14:21:06,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-30 14:21:06,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-30 14:21:06,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-30 14:21:06,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-30 14:21:06,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-30 14:21:06,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-30 14:21:06,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-30 14:21:06,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:21:06,264 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-30 14:21:06,267 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:21:06,267 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:21:06,300 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:21:06,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 293 transitions, 604 flow [2023-08-30 14:21:06,346 INFO L130 PetriNetUnfolder]: 75/483 cut-off events. [2023-08-30 14:21:06,346 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 14:21:06,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 483 events. 75/483 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2032 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 295. Up to 12 conditions per place. [2023-08-30 14:21:06,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 293 transitions, 604 flow [2023-08-30 14:21:06,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 293 transitions, 604 flow [2023-08-30 14:21:06,356 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:21:06,356 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 293 transitions, 604 flow [2023-08-30 14:21:06,356 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 293 transitions, 604 flow [2023-08-30 14:21:06,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 293 transitions, 604 flow [2023-08-30 14:21:06,417 INFO L130 PetriNetUnfolder]: 75/483 cut-off events. [2023-08-30 14:21:06,417 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 14:21:06,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 483 events. 75/483 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2032 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 295. Up to 12 conditions per place. [2023-08-30 14:21:06,441 INFO L119 LiptonReduction]: Number of co-enabled transitions 40200 [2023-08-30 14:21:10,260 INFO L134 LiptonReduction]: Checked pairs total: 71775 [2023-08-30 14:21:10,261 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-08-30 14:21:10,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:21:10,263 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;@3a4b5a76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:21:10,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 14:21:10,264 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:21:10,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:21:10,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:10,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:21:10,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:10,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:10,265 INFO L85 PathProgramCache]: Analyzing trace with hash 47355, now seen corresponding path program 1 times [2023-08-30 14:21:10,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:10,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111821057] [2023-08-30 14:21:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:10,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:10,287 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 14:21:10,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111821057] [2023-08-30 14:21:10,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111821057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:10,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:10,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:21:10,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084835785] [2023-08-30 14:21:10,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:10,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:10,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:10,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:10,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:10,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-08-30 14:21:10,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 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 14:21:10,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:10,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-08-30 14:21:10,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:12,585 INFO L130 PetriNetUnfolder]: 18204/28759 cut-off events. [2023-08-30 14:21:12,585 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 14:21:12,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55584 conditions, 28759 events. 18204/28759 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 214971 event pairs, 17105 based on Foata normal form. 4139/24418 useless extension candidates. Maximal degree in co-relation 24620. Up to 26707 conditions per place. [2023-08-30 14:21:12,760 INFO L137 encePairwiseOnDemand]: 516/553 looper letters, 70 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 14:21:12,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 330 flow [2023-08-30 14:21:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 837 transitions. [2023-08-30 14:21:12,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045207956600362 [2023-08-30 14:21:12,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 837 transitions. [2023-08-30 14:21:12,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 837 transitions. [2023-08-30 14:21:12,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:12,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 837 transitions. [2023-08-30 14:21:12,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:12,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:12,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:12,768 INFO L175 Difference]: Start difference. First operand has 83 places, 116 transitions, 250 flow. Second operand 3 states and 837 transitions. [2023-08-30 14:21:12,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 330 flow [2023-08-30 14:21:12,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:21:12,772 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 198 flow [2023-08-30 14:21:12,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-08-30 14:21:12,773 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-08-30 14:21:12,773 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 198 flow [2023-08-30 14:21:12,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 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 14:21:12,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:12,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:21:12,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:21:12,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:12,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:12,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1470968, now seen corresponding path program 1 times [2023-08-30 14:21:12,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:12,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912721599] [2023-08-30 14:21:12,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:12,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:12,800 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 14:21:12,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:12,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912721599] [2023-08-30 14:21:12,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912721599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:12,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:12,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:12,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757673126] [2023-08-30 14:21:12,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:12,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:12,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:12,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-08-30 14:21:12,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:12,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:12,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-08-30 14:21:12,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:14,808 INFO L130 PetriNetUnfolder]: 18204/28758 cut-off events. [2023-08-30 14:21:14,808 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 14:21:14,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55589 conditions, 28758 events. 18204/28758 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 215199 event pairs, 17105 based on Foata normal form. 0/20279 useless extension candidates. Maximal degree in co-relation 55576. Up to 26706 conditions per place. [2023-08-30 14:21:14,995 INFO L137 encePairwiseOnDemand]: 551/553 looper letters, 70 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2023-08-30 14:21:14,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 83 transitions, 336 flow [2023-08-30 14:21:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:14,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2023-08-30 14:21:14,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822182037371911 [2023-08-30 14:21:14,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2023-08-30 14:21:14,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2023-08-30 14:21:14,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:14,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2023-08-30 14:21:15,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 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 14:21:15,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,004 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 198 flow. Second operand 3 states and 800 transitions. [2023-08-30 14:21:15,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 83 transitions, 336 flow [2023-08-30 14:21:15,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:15,007 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 192 flow [2023-08-30 14:21:15,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2023-08-30 14:21:15,008 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-08-30 14:21:15,008 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 192 flow [2023-08-30 14:21:15,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:15,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:15,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:21:15,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:15,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:15,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1357543519, now seen corresponding path program 1 times [2023-08-30 14:21:15,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:15,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715668638] [2023-08-30 14:21:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:15,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:15,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:15,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715668638] [2023-08-30 14:21:15,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715668638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:15,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268972449] [2023-08-30 14:21:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:15,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:15,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:15,077 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 14:21:15,106 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 14:21:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:15,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:21:15,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:15,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:15,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268972449] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:15,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:15,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:21:15,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281396184] [2023-08-30 14:21:15,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:15,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:21:15,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:21:15,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:21:15,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 553 [2023-08-30 14:21:15,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 243.57142857142858) internal successors, (1705), 7 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:15,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 553 [2023-08-30 14:21:15,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:17,343 INFO L130 PetriNetUnfolder]: 18204/28761 cut-off events. [2023-08-30 14:21:17,343 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 14:21:17,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55597 conditions, 28761 events. 18204/28761 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 214930 event pairs, 17105 based on Foata normal form. 0/20282 useless extension candidates. Maximal degree in co-relation 55587. Up to 26706 conditions per place. [2023-08-30 14:21:17,494 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 69 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-08-30 14:21:17,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 352 flow [2023-08-30 14:21:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:21:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:21:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1529 transitions. [2023-08-30 14:21:17,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46081977094635324 [2023-08-30 14:21:17,500 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1529 transitions. [2023-08-30 14:21:17,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1529 transitions. [2023-08-30 14:21:17,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:17,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1529 transitions. [2023-08-30 14:21:17,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:17,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:17,508 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:17,508 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 192 flow. Second operand 6 states and 1529 transitions. [2023-08-30 14:21:17,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 352 flow [2023-08-30 14:21:17,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:17,510 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 227 flow [2023-08-30 14:21:17,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-08-30 14:21:17,512 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2023-08-30 14:21:17,512 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 227 flow [2023-08-30 14:21:17,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 243.57142857142858) internal successors, (1705), 7 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:17,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:17,513 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:17,522 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 14:21:17,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:17,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:17,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:17,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1880441512, now seen corresponding path program 1 times [2023-08-30 14:21:17,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:17,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655739290] [2023-08-30 14:21:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:17,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:21:17,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:17,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655739290] [2023-08-30 14:21:17,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655739290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:17,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:17,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:17,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823417421] [2023-08-30 14:21:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:17,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:17,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:17,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-08-30 14:21:17,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:17,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:17,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-08-30 14:21:17,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:19,395 INFO L130 PetriNetUnfolder]: 17908/28425 cut-off events. [2023-08-30 14:21:19,396 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-30 14:21:19,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55205 conditions, 28425 events. 17908/28425 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 216087 event pairs, 8177 based on Foata normal form. 0/20011 useless extension candidates. Maximal degree in co-relation 55191. Up to 26596 conditions per place. [2023-08-30 14:21:19,584 INFO L137 encePairwiseOnDemand]: 548/553 looper letters, 92 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 14:21:19,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 455 flow [2023-08-30 14:21:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-08-30 14:21:19,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49547920433996384 [2023-08-30 14:21:19,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-08-30 14:21:19,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-08-30 14:21:19,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:19,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-08-30 14:21:19,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:19,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:19,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:19,596 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 227 flow. Second operand 3 states and 822 transitions. [2023-08-30 14:21:19,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 455 flow [2023-08-30 14:21:19,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 441 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:19,600 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 229 flow [2023-08-30 14:21:19,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-08-30 14:21:19,602 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2023-08-30 14:21:19,602 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 229 flow [2023-08-30 14:21:19,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:19,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:19,603 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:19,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:21:19,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:19,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash -546114119, now seen corresponding path program 1 times [2023-08-30 14:21:19,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:19,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363702875] [2023-08-30 14:21:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:19,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:19,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:19,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363702875] [2023-08-30 14:21:19,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363702875] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:19,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250448302] [2023-08-30 14:21:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:19,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:19,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:19,701 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 14:21:19,703 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 14:21:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:19,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:21:19,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:19,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:19,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250448302] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:19,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:19,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:21:19,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59435630] [2023-08-30 14:21:19,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:19,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:21:19,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:19,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:21:19,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:21:19,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 553 [2023-08-30 14:21:19,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 243.46153846153845) internal successors, (3165), 13 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:19,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:19,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 553 [2023-08-30 14:21:19,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:21,620 INFO L130 PetriNetUnfolder]: 18313/28500 cut-off events. [2023-08-30 14:21:21,620 INFO L131 PetriNetUnfolder]: For 911/911 co-relation queries the response was YES. [2023-08-30 14:21:21,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56697 conditions, 28500 events. 18313/28500 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 210278 event pairs, 17069 based on Foata normal form. 6/20409 useless extension candidates. Maximal degree in co-relation 56682. Up to 26613 conditions per place. [2023-08-30 14:21:21,785 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 70 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-08-30 14:21:21,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 427 flow [2023-08-30 14:21:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:21:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:21:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2990 transitions. [2023-08-30 14:21:21,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45057263411693793 [2023-08-30 14:21:21,793 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2990 transitions. [2023-08-30 14:21:21,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2990 transitions. [2023-08-30 14:21:21,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:21,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2990 transitions. [2023-08-30 14:21:21,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 249.16666666666666) internal successors, (2990), 12 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:21,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 553.0) internal successors, (7189), 13 states have internal predecessors, (7189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:21,810 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 553.0) internal successors, (7189), 13 states have internal predecessors, (7189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:21,810 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 229 flow. Second operand 12 states and 2990 transitions. [2023-08-30 14:21:21,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 427 flow [2023-08-30 14:21:21,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:21,815 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 311 flow [2023-08-30 14:21:21,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=311, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2023-08-30 14:21:21,816 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 27 predicate places. [2023-08-30 14:21:21,816 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 311 flow [2023-08-30 14:21:21,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.46153846153845) internal successors, (3165), 13 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:21,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:21,818 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:21,824 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 14:21:22,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 14:21:22,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:22,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:22,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2004040999, now seen corresponding path program 2 times [2023-08-30 14:21:22,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:22,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851293048] [2023-08-30 14:21:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:22,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:22,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:22,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851293048] [2023-08-30 14:21:22,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851293048] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:22,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:22,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:21:22,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076193678] [2023-08-30 14:21:22,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:22,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:21:22,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:21:22,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:21:22,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 553 [2023-08-30 14:21:22,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 234.33333333333334) internal successors, (1406), 6 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:22,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:22,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 553 [2023-08-30 14:21:22,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:24,745 INFO L130 PetriNetUnfolder]: 19165/30726 cut-off events. [2023-08-30 14:21:24,745 INFO L131 PetriNetUnfolder]: For 943/943 co-relation queries the response was YES. [2023-08-30 14:21:24,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61514 conditions, 30726 events. 19165/30726 cut-off events. For 943/943 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 238519 event pairs, 7047 based on Foata normal form. 0/22899 useless extension candidates. Maximal degree in co-relation 61492. Up to 22390 conditions per place. [2023-08-30 14:21:24,923 INFO L137 encePairwiseOnDemand]: 537/553 looper letters, 175 selfloop transitions, 14 changer transitions 0/201 dead transitions. [2023-08-30 14:21:24,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 201 transitions, 940 flow [2023-08-30 14:21:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:21:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:21:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1352 transitions. [2023-08-30 14:21:24,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48896925858951173 [2023-08-30 14:21:24,927 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1352 transitions. [2023-08-30 14:21:24,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1352 transitions. [2023-08-30 14:21:24,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:24,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1352 transitions. [2023-08-30 14:21:24,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.4) internal successors, (1352), 5 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:24,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 553.0) internal successors, (3318), 6 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:24,934 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 553.0) internal successors, (3318), 6 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:24,935 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 311 flow. Second operand 5 states and 1352 transitions. [2023-08-30 14:21:24,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 201 transitions, 940 flow [2023-08-30 14:21:24,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 201 transitions, 892 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:21:24,939 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 379 flow [2023-08-30 14:21:24,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2023-08-30 14:21:24,940 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 30 predicate places. [2023-08-30 14:21:24,940 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 379 flow [2023-08-30 14:21:24,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 234.33333333333334) internal successors, (1406), 6 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:24,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:24,941 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:24,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:21:24,941 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:24,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:24,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1985133833, now seen corresponding path program 1 times [2023-08-30 14:21:24,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:24,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539745547] [2023-08-30 14:21:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:24,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 14:21:24,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:24,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539745547] [2023-08-30 14:21:24,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539745547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:24,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:24,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:24,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783735845] [2023-08-30 14:21:24,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:24,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:24,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:24,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 553 [2023-08-30 14:21:24,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:24,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:24,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 553 [2023-08-30 14:21:24,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:26,857 INFO L130 PetriNetUnfolder]: 18459/29482 cut-off events. [2023-08-30 14:21:26,857 INFO L131 PetriNetUnfolder]: For 5960/5964 co-relation queries the response was YES. [2023-08-30 14:21:26,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67191 conditions, 29482 events. 18459/29482 cut-off events. For 5960/5964 co-relation queries the response was YES. Maximal size of possible extension queue 1383. Compared 233656 event pairs, 3622 based on Foata normal form. 1/23713 useless extension candidates. Maximal degree in co-relation 67165. Up to 25579 conditions per place. [2023-08-30 14:21:27,068 INFO L137 encePairwiseOnDemand]: 549/553 looper letters, 127 selfloop transitions, 5 changer transitions 0/144 dead transitions. [2023-08-30 14:21:27,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 144 transitions, 761 flow [2023-08-30 14:21:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2023-08-30 14:21:27,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015069318866787 [2023-08-30 14:21:27,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2023-08-30 14:21:27,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2023-08-30 14:21:27,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:27,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2023-08-30 14:21:27,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:27,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:27,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:27,075 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 379 flow. Second operand 3 states and 832 transitions. [2023-08-30 14:21:27,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 144 transitions, 761 flow [2023-08-30 14:21:27,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 144 transitions, 761 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:21:27,109 INFO L231 Difference]: Finished difference. Result has 115 places, 105 transitions, 396 flow [2023-08-30 14:21:27,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=115, PETRI_TRANSITIONS=105} [2023-08-30 14:21:27,113 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2023-08-30 14:21:27,113 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 396 flow [2023-08-30 14:21:27,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:27,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:27,114 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:27,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:21:27,114 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:27,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:27,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1985133779, now seen corresponding path program 1 times [2023-08-30 14:21:27,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:27,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101216020] [2023-08-30 14:21:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:27,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:27,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101216020] [2023-08-30 14:21:27,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101216020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:27,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:27,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:27,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430829621] [2023-08-30 14:21:27,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:27,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:27,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:27,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:27,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:27,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-08-30 14:21:27,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 105 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:27,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:27,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-08-30 14:21:27,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:29,438 INFO L130 PetriNetUnfolder]: 17869/28757 cut-off events. [2023-08-30 14:21:29,438 INFO L131 PetriNetUnfolder]: For 9845/9897 co-relation queries the response was YES. [2023-08-30 14:21:29,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65863 conditions, 28757 events. 17869/28757 cut-off events. For 9845/9897 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 220915 event pairs, 16124 based on Foata normal form. 346/23721 useless extension candidates. Maximal degree in co-relation 65836. Up to 27138 conditions per place. [2023-08-30 14:21:29,632 INFO L137 encePairwiseOnDemand]: 551/553 looper letters, 91 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2023-08-30 14:21:29,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 104 transitions, 576 flow [2023-08-30 14:21:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:29,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:29,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2023-08-30 14:21:29,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810126582278481 [2023-08-30 14:21:29,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 798 transitions. [2023-08-30 14:21:29,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 798 transitions. [2023-08-30 14:21:29,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:29,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 798 transitions. [2023-08-30 14:21:29,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:29,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:29,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:29,639 INFO L175 Difference]: Start difference. First operand has 115 places, 105 transitions, 396 flow. Second operand 3 states and 798 transitions. [2023-08-30 14:21:29,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 104 transitions, 576 flow [2023-08-30 14:21:29,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 571 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:29,658 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 389 flow [2023-08-30 14:21:29,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2023-08-30 14:21:29,659 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2023-08-30 14:21:29,659 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 389 flow [2023-08-30 14:21:29,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:29,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:29,660 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:29,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:21:29,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:29,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:29,661 INFO L85 PathProgramCache]: Analyzing trace with hash 748222884, now seen corresponding path program 1 times [2023-08-30 14:21:29,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:29,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108993558] [2023-08-30 14:21:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:29,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:29,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:21:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:29,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:21:29,726 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:21:29,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-08-30 14:21:29,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-30 14:21:29,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-30 14:21:29,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-30 14:21:29,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-30 14:21:29,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-30 14:21:29,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-30 14:21:29,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-30 14:21:29,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-30 14:21:29,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-30 14:21:29,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-30 14:21:29,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-30 14:21:29,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-30 14:21:29,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-30 14:21:29,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-30 14:21:29,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-30 14:21:29,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-30 14:21:29,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-30 14:21:29,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-08-30 14:21:29,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-30 14:21:29,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-30 14:21:29,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-30 14:21:29,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-30 14:21:29,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:21:29,731 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:29,732 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:21:29,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:21:29,762 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:21:29,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:29,836 INFO L130 PetriNetUnfolder]: 110/712 cut-off events. [2023-08-30 14:21:29,837 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-30 14:21:29,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 712 events. 110/712 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3261 event pairs, 1 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 491. Up to 16 conditions per place. [2023-08-30 14:21:29,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:29,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:29,852 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:21:29,852 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:29,852 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:29,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 370 transitions, 770 flow [2023-08-30 14:21:29,922 INFO L130 PetriNetUnfolder]: 110/712 cut-off events. [2023-08-30 14:21:29,922 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-30 14:21:29,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 712 events. 110/712 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3261 event pairs, 1 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 491. Up to 16 conditions per place. [2023-08-30 14:21:29,956 INFO L119 LiptonReduction]: Number of co-enabled transitions 77850 [2023-08-30 14:21:34,121 INFO L134 LiptonReduction]: Checked pairs total: 141351 [2023-08-30 14:21:34,121 INFO L136 LiptonReduction]: Total number of compositions: 316 [2023-08-30 14:21:34,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:21:34,123 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;@3a4b5a76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:21:34,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-30 14:21:34,124 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:21:34,124 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:21:34,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:34,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:21:34,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:21:34,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:34,125 INFO L85 PathProgramCache]: Analyzing trace with hash 71763, now seen corresponding path program 1 times [2023-08-30 14:21:34,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:34,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997783267] [2023-08-30 14:21:34,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:34,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:34,145 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 14:21:34,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:34,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997783267] [2023-08-30 14:21:34,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997783267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:34,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:34,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:21:34,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842596920] [2023-08-30 14:21:34,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:34,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:34,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 686 [2023-08-30 14:21:34,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 149 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:34,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:34,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 686 [2023-08-30 14:21:34,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:18,671 INFO L130 PetriNetUnfolder]: 574142/783225 cut-off events. [2023-08-30 14:22:18,671 INFO L131 PetriNetUnfolder]: For 5109/5109 co-relation queries the response was YES. [2023-08-30 14:22:20,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544044 conditions, 783225 events. 574142/783225 cut-off events. For 5109/5109 co-relation queries the response was YES. Maximal size of possible extension queue 19823. Compared 6246302 event pairs, 554452 based on Foata normal form. 98874/655857 useless extension candidates. Maximal degree in co-relation 329878. Up to 757863 conditions per place. [2023-08-30 14:22:22,778 INFO L137 encePairwiseOnDemand]: 639/686 looper letters, 92 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-30 14:22:22,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 107 transitions, 432 flow [2023-08-30 14:22:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:22:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:22:22,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1055 transitions. [2023-08-30 14:22:22,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126336248785228 [2023-08-30 14:22:22,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1055 transitions. [2023-08-30 14:22:22,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1055 transitions. [2023-08-30 14:22:22,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:22,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1055 transitions. [2023-08-30 14:22:22,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:22,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:22,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:22,787 INFO L175 Difference]: Start difference. First operand has 106 places, 149 transitions, 328 flow. Second operand 3 states and 1055 transitions. [2023-08-30 14:22:22,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 107 transitions, 432 flow [2023-08-30 14:22:22,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 107 transitions, 432 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:22:22,791 INFO L231 Difference]: Finished difference. Result has 108 places, 107 transitions, 256 flow [2023-08-30 14:22:22,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=108, PETRI_TRANSITIONS=107} [2023-08-30 14:22:22,792 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 2 predicate places. [2023-08-30 14:22:22,792 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 107 transitions, 256 flow [2023-08-30 14:22:22,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:22,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:22,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:22:22,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:22:22,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:22:22,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:22,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2229425, now seen corresponding path program 1 times [2023-08-30 14:22:22,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:22,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153948823] [2023-08-30 14:22:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:22,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:22,816 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 14:22:22,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153948823] [2023-08-30 14:22:22,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153948823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:22,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:22,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:22:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456710325] [2023-08-30 14:22:22,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:22,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:22:22,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:22,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:22:22,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:22:22,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 686 [2023-08-30 14:22:22,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 107 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:22,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:22,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 686 [2023-08-30 14:22:22,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:23:08,540 INFO L130 PetriNetUnfolder]: 574142/783224 cut-off events. [2023-08-30 14:23:08,540 INFO L131 PetriNetUnfolder]: For 5109/5109 co-relation queries the response was YES. [2023-08-30 14:23:10,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544049 conditions, 783224 events. 574142/783224 cut-off events. For 5109/5109 co-relation queries the response was YES. Maximal size of possible extension queue 19823. Compared 6245820 event pairs, 554452 based on Foata normal form. 0/556983 useless extension candidates. Maximal degree in co-relation 1544035. Up to 757862 conditions per place. [2023-08-30 14:23:12,751 INFO L137 encePairwiseOnDemand]: 684/686 looper letters, 92 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2023-08-30 14:23:12,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 438 flow [2023-08-30 14:23:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:23:12,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:23:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-08-30 14:23:12,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2023-08-30 14:23:12,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-08-30 14:23:12,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-08-30 14:23:12,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:23:12,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-08-30 14:23:12,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:12,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:12,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:12,759 INFO L175 Difference]: Start difference. First operand has 108 places, 107 transitions, 256 flow. Second operand 3 states and 1008 transitions. [2023-08-30 14:23:12,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 438 flow [2023-08-30 14:23:12,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 434 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:23:12,763 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 250 flow [2023-08-30 14:23:12,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2023-08-30 14:23:12,764 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 2 predicate places. [2023-08-30 14:23:12,764 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 250 flow [2023-08-30 14:23:12,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:12,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:23:12,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:23:12,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:23:12,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:23:12,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:23:12,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1786588906, now seen corresponding path program 1 times [2023-08-30 14:23:12,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:23:12,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456022735] [2023-08-30 14:23:12,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:23:12,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:23:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:23:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:23:12,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:23:12,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456022735] [2023-08-30 14:23:12,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456022735] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:23:12,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133777090] [2023-08-30 14:23:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:23:12,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:23:12,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:23:12,797 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 14:23:12,798 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 14:23:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:23:12,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:23:12,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:23:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:23:12,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:23:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:23:12,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133777090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:23:12,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:23:12,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:23:12,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282916062] [2023-08-30 14:23:12,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:23:12,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:23:12,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:23:12,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:23:12,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:23:12,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 686 [2023-08-30 14:23:12,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 305.57142857142856) internal successors, (2139), 7 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:12,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:23:12,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 686 [2023-08-30 14:23:12,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:24:02,080 INFO L130 PetriNetUnfolder]: 574142/783227 cut-off events. [2023-08-30 14:24:02,080 INFO L131 PetriNetUnfolder]: For 5109/5109 co-relation queries the response was YES. [2023-08-30 14:24:03,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544057 conditions, 783227 events. 574142/783227 cut-off events. For 5109/5109 co-relation queries the response was YES. Maximal size of possible extension queue 19823. Compared 6245666 event pairs, 554452 based on Foata normal form. 0/556986 useless extension candidates. Maximal degree in co-relation 1544046. Up to 757862 conditions per place. [2023-08-30 14:24:06,175 INFO L137 encePairwiseOnDemand]: 683/686 looper letters, 91 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2023-08-30 14:24:06,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 109 transitions, 454 flow [2023-08-30 14:24:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:24:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:24:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1923 transitions. [2023-08-30 14:24:06,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467201166180758 [2023-08-30 14:24:06,180 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1923 transitions. [2023-08-30 14:24:06,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1923 transitions. [2023-08-30 14:24:06,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:24:06,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1923 transitions. [2023-08-30 14:24:06,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 320.5) internal successors, (1923), 6 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:06,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:06,188 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:06,188 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 250 flow. Second operand 6 states and 1923 transitions. [2023-08-30 14:24:06,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 109 transitions, 454 flow [2023-08-30 14:24:06,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 109 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:24:06,192 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 285 flow [2023-08-30 14:24:06,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2023-08-30 14:24:06,193 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 9 predicate places. [2023-08-30 14:24:06,193 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 285 flow [2023-08-30 14:24:06,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 305.57142857142856) internal successors, (2139), 7 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:06,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:24:06,194 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:24:06,199 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 14:24:06,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 14:24:06,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:24:06,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:24:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1068304723, now seen corresponding path program 1 times [2023-08-30 14:24:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:24:06,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287936034] [2023-08-30 14:24:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:24:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:24:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:24:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:24:06,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:24:06,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287936034] [2023-08-30 14:24:06,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287936034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:24:06,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:24:06,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:24:06,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771336731] [2023-08-30 14:24:06,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:24:06,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:24:06,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:24:06,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:24:06,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:24:06,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 686 [2023-08-30 14:24:06,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:06,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:24:06,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 686 [2023-08-30 14:24:06,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:24:55,967 INFO L130 PetriNetUnfolder]: 579118/786100 cut-off events. [2023-08-30 14:24:55,967 INFO L131 PetriNetUnfolder]: For 5065/5065 co-relation queries the response was YES. [2023-08-30 14:24:58,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546820 conditions, 786100 events. 579118/786100 cut-off events. For 5065/5065 co-relation queries the response was YES. Maximal size of possible extension queue 19423. Compared 6173891 event pairs, 487651 based on Foata normal form. 0/560198 useless extension candidates. Maximal degree in co-relation 1546805. Up to 757757 conditions per place. [2023-08-30 14:25:00,696 INFO L137 encePairwiseOnDemand]: 681/686 looper letters, 113 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-08-30 14:25:00,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 128 transitions, 553 flow [2023-08-30 14:25:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:25:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:25:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1029 transitions. [2023-08-30 14:25:00,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 14:25:00,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1029 transitions. [2023-08-30 14:25:00,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1029 transitions. [2023-08-30 14:25:00,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:25:00,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1029 transitions. [2023-08-30 14:25:00,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:00,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:00,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:00,704 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 285 flow. Second operand 3 states and 1029 transitions. [2023-08-30 14:25:00,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 128 transitions, 553 flow [2023-08-30 14:25:00,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 128 transitions, 539 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:25:00,708 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 287 flow [2023-08-30 14:25:00,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2023-08-30 14:25:00,709 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 11 predicate places. [2023-08-30 14:25:00,709 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 287 flow [2023-08-30 14:25:00,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:00,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:25:00,710 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:25:00,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 14:25:00,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:25:00,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:25:00,711 INFO L85 PathProgramCache]: Analyzing trace with hash 708355296, now seen corresponding path program 1 times [2023-08-30 14:25:00,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:25:00,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881434400] [2023-08-30 14:25:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:25:00,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:25:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:25:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:25:00,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:25:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881434400] [2023-08-30 14:25:00,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881434400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:25:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334115981] [2023-08-30 14:25:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:25:00,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:25:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:25:00,780 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 14:25:00,785 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 14:25:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:25:00,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:25:00,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:25:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:25:00,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:25:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:25:00,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334115981] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:25:00,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:25:00,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:25:00,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110220359] [2023-08-30 14:25:00,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:25:00,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:25:00,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:25:00,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:25:00,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:25:00,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 686 [2023-08-30 14:25:00,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 287 flow. Second operand has 13 states, 13 states have (on average 305.46153846153845) internal successors, (3971), 13 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:00,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:25:00,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 686 [2023-08-30 14:25:00,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:25:53,862 INFO L130 PetriNetUnfolder]: 577617/785501 cut-off events. [2023-08-30 14:25:53,863 INFO L131 PetriNetUnfolder]: For 20214/20214 co-relation queries the response was YES. [2023-08-30 14:25:56,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1576565 conditions, 785501 events. 577617/785501 cut-off events. For 20214/20214 co-relation queries the response was YES. Maximal size of possible extension queue 19380. Compared 6194036 event pairs, 554418 based on Foata normal form. 6/566977 useless extension candidates. Maximal degree in co-relation 1576549. Up to 757773 conditions per place. [2023-08-30 14:25:58,914 INFO L137 encePairwiseOnDemand]: 683/686 looper letters, 92 selfloop transitions, 11 changer transitions 0/116 dead transitions. [2023-08-30 14:25:58,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 116 transitions, 529 flow [2023-08-30 14:25:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:25:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:25:58,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3756 transitions. [2023-08-30 14:25:58,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45626822157434405 [2023-08-30 14:25:58,922 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3756 transitions. [2023-08-30 14:25:58,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3756 transitions. [2023-08-30 14:25:58,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:25:58,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3756 transitions. [2023-08-30 14:25:58,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:58,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 686.0) internal successors, (8918), 13 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:58,937 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 686.0) internal successors, (8918), 13 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:58,937 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 287 flow. Second operand 12 states and 3756 transitions. [2023-08-30 14:25:58,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 116 transitions, 529 flow [2023-08-30 14:25:58,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 116 transitions, 527 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:25:58,983 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 369 flow [2023-08-30 14:25:58,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=369, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2023-08-30 14:25:58,984 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 27 predicate places. [2023-08-30 14:25:58,984 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 369 flow [2023-08-30 14:25:58,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 305.46153846153845) internal successors, (3971), 13 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:58,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:25:58,985 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:25:58,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 14:25:59,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:25:59,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:25:59,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:25:59,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1057535584, now seen corresponding path program 2 times [2023-08-30 14:25:59,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:25:59,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684826757] [2023-08-30 14:25:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:25:59,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:25:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:25:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:25:59,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:25:59,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684826757] [2023-08-30 14:25:59,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684826757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:25:59,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:25:59,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:25:59,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486091666] [2023-08-30 14:25:59,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:25:59,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:25:59,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:25:59,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:25:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:25:59,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 686 [2023-08-30 14:25:59,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 294.3333333333333) internal successors, (1766), 6 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:59,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:25:59,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 686 [2023-08-30 14:25:59,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:26:58,664 INFO L130 PetriNetUnfolder]: 641585/879005 cut-off events. [2023-08-30 14:26:58,664 INFO L131 PetriNetUnfolder]: For 22888/22888 co-relation queries the response was YES. [2023-08-30 14:27:02,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1773177 conditions, 879005 events. 641585/879005 cut-off events. For 22888/22888 co-relation queries the response was YES. Maximal size of possible extension queue 23557. Compared 7191458 event pairs, 220897 based on Foata normal form. 0/650053 useless extension candidates. Maximal degree in co-relation 1773154. Up to 700611 conditions per place. [2023-08-30 14:27:05,413 INFO L137 encePairwiseOnDemand]: 666/686 looper letters, 238 selfloop transitions, 18 changer transitions 0/269 dead transitions. [2023-08-30 14:27:05,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 269 transitions, 1242 flow [2023-08-30 14:27:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:27:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:27:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1723 transitions. [2023-08-30 14:27:05,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502332361516035 [2023-08-30 14:27:05,416 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1723 transitions. [2023-08-30 14:27:05,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1723 transitions. [2023-08-30 14:27:05,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:27:05,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1723 transitions. [2023-08-30 14:27:05,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 344.6) internal successors, (1723), 5 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:05,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:05,422 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:05,422 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 369 flow. Second operand 5 states and 1723 transitions. [2023-08-30 14:27:05,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 269 transitions, 1242 flow [2023-08-30 14:27:05,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 269 transitions, 1194 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:27:05,485 INFO L231 Difference]: Finished difference. Result has 136 places, 132 transitions, 473 flow [2023-08-30 14:27:05,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=473, PETRI_PLACES=136, PETRI_TRANSITIONS=132} [2023-08-30 14:27:05,486 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 30 predicate places. [2023-08-30 14:27:05,486 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 132 transitions, 473 flow [2023-08-30 14:27:05,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 294.3333333333333) internal successors, (1766), 6 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:05,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:27:05,487 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:27:05,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 14:27:05,487 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:27:05,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:27:05,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1819076647, now seen corresponding path program 1 times [2023-08-30 14:27:05,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:27:05,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287172515] [2023-08-30 14:27:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:27:05,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:27:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:27:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 14:27:05,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:27:05,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287172515] [2023-08-30 14:27:05,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287172515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:27:05,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:27:05,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:27:05,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402525349] [2023-08-30 14:27:05,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:27:05,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:27:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:27:05,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:27:05,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:27:05,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 686 [2023-08-30 14:27:05,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 132 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:05,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:27:05,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 686 [2023-08-30 14:27:05,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:10,923 INFO L130 PetriNetUnfolder]: 617912/852213 cut-off events. [2023-08-30 14:28:10,923 INFO L131 PetriNetUnfolder]: For 182175/182175 co-relation queries the response was YES. [2023-08-30 14:28:15,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960160 conditions, 852213 events. 617912/852213 cut-off events. For 182175/182175 co-relation queries the response was YES. Maximal size of possible extension queue 22884. Compared 7191486 event pairs, 125521 based on Foata normal form. 0/682255 useless extension candidates. Maximal degree in co-relation 1960133. Up to 747094 conditions per place. [2023-08-30 14:28:18,098 INFO L137 encePairwiseOnDemand]: 682/686 looper letters, 177 selfloop transitions, 5 changer transitions 0/195 dead transitions. [2023-08-30 14:28:18,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 195 transitions, 1031 flow [2023-08-30 14:28:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:28:18,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:28:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1060 transitions. [2023-08-30 14:28:18,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150631681243926 [2023-08-30 14:28:18,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1060 transitions. [2023-08-30 14:28:18,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1060 transitions. [2023-08-30 14:28:18,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:18,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1060 transitions. [2023-08-30 14:28:18,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:18,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:18,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:18,105 INFO L175 Difference]: Start difference. First operand has 136 places, 132 transitions, 473 flow. Second operand 3 states and 1060 transitions. [2023-08-30 14:28:18,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 195 transitions, 1031 flow [2023-08-30 14:28:18,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 195 transitions, 1031 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:28:18,809 INFO L231 Difference]: Finished difference. Result has 138 places, 132 transitions, 490 flow [2023-08-30 14:28:18,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=138, PETRI_TRANSITIONS=132} [2023-08-30 14:28:18,810 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 32 predicate places. [2023-08-30 14:28:18,810 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 132 transitions, 490 flow [2023-08-30 14:28:18,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:18,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:18,810 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:28:18,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 14:28:18,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:28:18,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1819076576, now seen corresponding path program 1 times [2023-08-30 14:28:18,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:18,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945420116] [2023-08-30 14:28:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:18,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:28:18,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:18,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945420116] [2023-08-30 14:28:18,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945420116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:18,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104900222] [2023-08-30 14:28:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:18,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:18,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:18,867 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 14:28:18,869 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 14:28:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:18,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:28:18,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:28:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:28:18,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:28:18,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104900222] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:28:18,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:28:18,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:28:18,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673566458] [2023-08-30 14:28:18,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:28:18,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:28:18,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:28:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:28:19,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 686 [2023-08-30 14:28:19,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 132 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 307.25) internal successors, (1229), 4 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:19,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:19,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 686 [2023-08-30 14:28:19,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:29:24,742 INFO L130 PetriNetUnfolder]: 596752/819480 cut-off events. [2023-08-30 14:29:24,743 INFO L131 PetriNetUnfolder]: For 268029/268029 co-relation queries the response was YES. [2023-08-30 14:29:29,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901271 conditions, 819480 events. 596752/819480 cut-off events. For 268029/268029 co-relation queries the response was YES. Maximal size of possible extension queue 21952. Compared 6633739 event pairs, 491564 based on Foata normal form. 8083/669829 useless extension candidates. Maximal degree in co-relation 1901243. Up to 796432 conditions per place. [2023-08-30 14:29:33,607 INFO L137 encePairwiseOnDemand]: 683/686 looper letters, 131 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2023-08-30 14:29:33,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 146 transitions, 788 flow [2023-08-30 14:29:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:29:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:29:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1328 transitions. [2023-08-30 14:29:33,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4839650145772595 [2023-08-30 14:29:33,610 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1328 transitions. [2023-08-30 14:29:33,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1328 transitions. [2023-08-30 14:29:33,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:29:33,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1328 transitions. [2023-08-30 14:29:33,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:33,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:33,615 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:33,615 INFO L175 Difference]: Start difference. First operand has 138 places, 132 transitions, 490 flow. Second operand 4 states and 1328 transitions. [2023-08-30 14:29:33,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 146 transitions, 788 flow [2023-08-30 14:29:34,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 146 transitions, 783 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:29:34,235 INFO L231 Difference]: Finished difference. Result has 139 places, 131 transitions, 485 flow [2023-08-30 14:29:34,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=485, PETRI_PLACES=139, PETRI_TRANSITIONS=131} [2023-08-30 14:29:34,236 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 33 predicate places. [2023-08-30 14:29:34,236 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 131 transitions, 485 flow [2023-08-30 14:29:34,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.25) internal successors, (1229), 4 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:34,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:29:34,237 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:29:34,243 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 14:29:34,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 14:29:34,443 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:29:34,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:29:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2141945257, now seen corresponding path program 1 times [2023-08-30 14:29:34,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:29:34,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730287795] [2023-08-30 14:29:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:29:34,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:29:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:29:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:29:34,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:29:34,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730287795] [2023-08-30 14:29:34,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730287795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:29:34,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:29:34,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:29:34,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789043563] [2023-08-30 14:29:34,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:29:34,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:29:34,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:29:34,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:29:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:29:34,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 686 [2023-08-30 14:29:34,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 131 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:34,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:29:34,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 686 [2023-08-30 14:29:34,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand