./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/13-privatized_69-refine-protected-loop-interval_true.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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:24:49,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:24:49,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:24:50,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:24:50,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:24:50,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:24:50,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:24:50,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:24:50,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:24:50,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:24:50,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:24:50,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:24:50,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:24:50,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:24:50,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:24:50,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:24:50,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:24:50,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:24:50,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:24:50,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:24:50,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:24:50,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:24:50,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:24:50,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:24:50,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:24:50,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:24:50,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:24:50,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:24:50,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:24:50,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:24:50,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:24:50,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:24:50,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:24:50,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:24:50,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:24:50,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:24:50,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:24:50,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:24:50,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:24:50,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:24:50,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:24:50,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:24:50,103 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:24:50,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:24:50,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:24:50,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:24:50,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:24:50,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:24:50,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:24:50,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:24:50,105 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:24:50,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:24:50,106 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:24:50,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:24:50,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:24:50,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:24:50,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:24:50,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:24:50,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:24:50,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:24:50,107 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:24:50,107 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:24:50,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:24:50,108 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:24:50,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:24:50,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:24:50,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:24:50,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:24:50,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:24:50,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:24:50,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:24:50,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:24:50,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:24:50,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:24:50,110 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:24:50,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:24:50,110 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:24:50,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:24:50,111 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:24:50,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:24:50,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:24:50,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:24:50,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:24:50,438 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:24:50,438 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:24:50,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-09-01 06:24:51,601 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:24:51,887 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:24:51,888 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-09-01 06:24:51,905 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452e400ac/123755f1c1b44de6b6658c05024f937a/FLAGd93c06f2d [2023-09-01 06:24:51,915 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452e400ac/123755f1c1b44de6b6658c05024f937a [2023-09-01 06:24:51,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:24:51,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:24:51,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:24:51,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:24:51,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:24:51,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:24:51" (1/1) ... [2023-09-01 06:24:51,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be4564c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:51, skipping insertion in model container [2023-09-01 06:24:51,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:24:51" (1/1) ... [2023-09-01 06:24:51,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:24:51,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:24:52,117 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/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2023-09-01 06:24:52,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:24:52,280 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:24:52,290 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/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2023-09-01 06:24:52,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:24:52,367 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:24:52,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52 WrapperNode [2023-09-01 06:24:52,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:24:52,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:24:52,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:24:52,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:24:52,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,422 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2023-09-01 06:24:52,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:24:52,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:24:52,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:24:52,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:24:52,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,455 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:24:52,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:24:52,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:24:52,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:24:52,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (1/1) ... [2023-09-01 06:24:52,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:24:52,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:24:52,496 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) [2023-09-01 06:24:52,508 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 [2023-09-01 06:24:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-09-01 06:24:52,532 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-09-01 06:24:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:24:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:24:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:24:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:24:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:24:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:24:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:24:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:24:52,536 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:24:52,633 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:24:52,635 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:24:52,893 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:24:52,899 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:24:52,899 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 06:24:52,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:24:52 BoogieIcfgContainer [2023-09-01 06:24:52,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:24:52,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:24:52,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:24:52,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:24:52,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:24:51" (1/3) ... [2023-09-01 06:24:52,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e38bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:24:52, skipping insertion in model container [2023-09-01 06:24:52,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:24:52" (2/3) ... [2023-09-01 06:24:52,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e38bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:24:52, skipping insertion in model container [2023-09-01 06:24:52,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:24:52" (3/3) ... [2023-09-01 06:24:52,907 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-09-01 06:24:52,914 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:24:52,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:24:52,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 06:24:52,922 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:24:52,984 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:24:53,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 235 flow [2023-09-01 06:24:53,099 INFO L130 PetriNetUnfolder]: 10/114 cut-off events. [2023-09-01 06:24:53,100 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:24:53,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 114 events. 10/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 215 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-09-01 06:24:53,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 235 flow [2023-09-01 06:24:53,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 114 transitions, 231 flow [2023-09-01 06:24:53,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:24:53,131 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 114 transitions, 231 flow [2023-09-01 06:24:53,138 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 114 transitions, 231 flow [2023-09-01 06:24:53,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 114 transitions, 231 flow [2023-09-01 06:24:53,171 INFO L130 PetriNetUnfolder]: 10/114 cut-off events. [2023-09-01 06:24:53,171 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:24:53,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 114 events. 10/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 215 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-09-01 06:24:53,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312 [2023-09-01 06:24:55,849 INFO L134 LiptonReduction]: Checked pairs total: 6018 [2023-09-01 06:24:55,849 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-09-01 06:24:55,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 06:24:55,865 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;@63a5dd39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:24:55,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-09-01 06:24:55,871 INFO L130 PetriNetUnfolder]: 4/20 cut-off events. [2023-09-01 06:24:55,871 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:24:55,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:55,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:24:55,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:55,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash 653838975, now seen corresponding path program 1 times [2023-09-01 06:24:55,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:55,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701979029] [2023-09-01 06:24:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:56,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:56,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701979029] [2023-09-01 06:24:56,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701979029] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:24:56,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:24:56,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 06:24:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617328225] [2023-09-01 06:24:56,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:24:56,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:24:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:24:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:24:56,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 221 [2023-09-01 06:24:56,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:56,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 221 [2023-09-01 06:24:56,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:56,278 INFO L130 PetriNetUnfolder]: 146/279 cut-off events. [2023-09-01 06:24:56,278 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:24:56,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 279 events. 146/279 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1083 event pairs, 77 based on Foata normal form. 11/204 useless extension candidates. Maximal degree in co-relation 539. Up to 223 conditions per place. [2023-09-01 06:24:56,284 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 31 selfloop transitions, 3 changer transitions 1/39 dead transitions. [2023-09-01 06:24:56,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 151 flow [2023-09-01 06:24:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:24:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:24:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-09-01 06:24:56,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-09-01 06:24:56,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-09-01 06:24:56,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-09-01 06:24:56,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:56,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-09-01 06:24:56,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,320 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 65 flow. Second operand 3 states and 340 transitions. [2023-09-01 06:24:56,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 151 flow [2023-09-01 06:24:56,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:24:56,324 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 88 flow [2023-09-01 06:24:56,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2023-09-01 06:24:56,329 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-09-01 06:24:56,330 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 88 flow [2023-09-01 06:24:56,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:56,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:24:56,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:24:56,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:56,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:56,339 INFO L85 PathProgramCache]: Analyzing trace with hash 840618020, now seen corresponding path program 1 times [2023-09-01 06:24:56,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:56,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313518524] [2023-09-01 06:24:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:56,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:56,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:56,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313518524] [2023-09-01 06:24:56,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313518524] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:24:56,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:24:56,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:24:56,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028044035] [2023-09-01 06:24:56,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:24:56,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:24:56,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:56,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:24:56,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:24:56,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-09-01 06:24:56,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:56,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-09-01 06:24:56,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:56,529 INFO L130 PetriNetUnfolder]: 144/280 cut-off events. [2023-09-01 06:24:56,529 INFO L131 PetriNetUnfolder]: For 44/51 co-relation queries the response was YES. [2023-09-01 06:24:56,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 280 events. 144/280 cut-off events. For 44/51 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1279 event pairs, 15 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 617. Up to 224 conditions per place. [2023-09-01 06:24:56,531 INFO L137 encePairwiseOnDemand]: 217/221 looper letters, 38 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-09-01 06:24:56,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 212 flow [2023-09-01 06:24:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:24:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:24:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-09-01 06:24:56,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526395173453997 [2023-09-01 06:24:56,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-09-01 06:24:56,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-09-01 06:24:56,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:56,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-09-01 06:24:56,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,538 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 88 flow. Second operand 3 states and 349 transitions. [2023-09-01 06:24:56,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 212 flow [2023-09-01 06:24:56,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:24:56,540 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 96 flow [2023-09-01 06:24:56,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2023-09-01 06:24:56,541 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-09-01 06:24:56,542 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 96 flow [2023-09-01 06:24:56,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:56,542 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:24:56,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:24:56,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:56,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:56,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1102290696, now seen corresponding path program 1 times [2023-09-01 06:24:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:56,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704607294] [2023-09-01 06:24:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:56,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 06:24:56,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:56,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704607294] [2023-09-01 06:24:56,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704607294] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:24:56,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:24:56,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:24:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705410120] [2023-09-01 06:24:56,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:24:56,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:24:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:24:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:24:56,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 221 [2023-09-01 06:24:56,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:56,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 221 [2023-09-01 06:24:56,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:56,703 INFO L130 PetriNetUnfolder]: 270/530 cut-off events. [2023-09-01 06:24:56,704 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-09-01 06:24:56,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 530 events. 270/530 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2296 event pairs, 63 based on Foata normal form. 8/434 useless extension candidates. Maximal degree in co-relation 1218. Up to 294 conditions per place. [2023-09-01 06:24:56,709 INFO L137 encePairwiseOnDemand]: 209/221 looper letters, 38 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-09-01 06:24:56,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 52 transitions, 247 flow [2023-09-01 06:24:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:24:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:24:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-09-01 06:24:56,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143288084464555 [2023-09-01 06:24:56,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-09-01 06:24:56,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-09-01 06:24:56,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:56,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-09-01 06:24:56,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,716 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 96 flow. Second operand 3 states and 341 transitions. [2023-09-01 06:24:56,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 52 transitions, 247 flow [2023-09-01 06:24:56,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:24:56,719 INFO L231 Difference]: Finished difference. Result has 35 places, 40 transitions, 178 flow [2023-09-01 06:24:56,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=35, PETRI_TRANSITIONS=40} [2023-09-01 06:24:56,720 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-09-01 06:24:56,720 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 40 transitions, 178 flow [2023-09-01 06:24:56,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:56,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:56,721 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:24:56,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:24:56,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:56,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:56,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1102290751, now seen corresponding path program 1 times [2023-09-01 06:24:56,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:56,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932286740] [2023-09-01 06:24:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:56,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:56,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932286740] [2023-09-01 06:24:56,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932286740] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:24:56,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289839023] [2023-09-01 06:24:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:56,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:24:56,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:24:56,833 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) [2023-09-01 06:24:56,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 06:24:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:56,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:24:56,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:24:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:57,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:24:57,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289839023] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:24:57,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:24:57,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-09-01 06:24:57,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977092719] [2023-09-01 06:24:57,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:24:57,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:24:57,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:57,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:24:57,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:24:57,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 221 [2023-09-01 06:24:57,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 40 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:57,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 221 [2023-09-01 06:24:57,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:57,211 INFO L130 PetriNetUnfolder]: 309/614 cut-off events. [2023-09-01 06:24:57,215 INFO L131 PetriNetUnfolder]: For 409/415 co-relation queries the response was YES. [2023-09-01 06:24:57,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 614 events. 309/614 cut-off events. For 409/415 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2658 event pairs, 99 based on Foata normal form. 22/559 useless extension candidates. Maximal degree in co-relation 1715. Up to 396 conditions per place. [2023-09-01 06:24:57,219 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 50 selfloop transitions, 19 changer transitions 0/75 dead transitions. [2023-09-01 06:24:57,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 75 transitions, 452 flow [2023-09-01 06:24:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:24:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:24:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 520 transitions. [2023-09-01 06:24:57,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2023-09-01 06:24:57,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 520 transitions. [2023-09-01 06:24:57,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 520 transitions. [2023-09-01 06:24:57,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:57,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 520 transitions. [2023-09-01 06:24:57,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,226 INFO L175 Difference]: Start difference. First operand has 35 places, 40 transitions, 178 flow. Second operand 5 states and 520 transitions. [2023-09-01 06:24:57,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 75 transitions, 452 flow [2023-09-01 06:24:57,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 75 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:24:57,233 INFO L231 Difference]: Finished difference. Result has 40 places, 51 transitions, 292 flow [2023-09-01 06:24:57,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=40, PETRI_TRANSITIONS=51} [2023-09-01 06:24:57,235 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2023-09-01 06:24:57,235 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 51 transitions, 292 flow [2023-09-01 06:24:57,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:57,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:24:57,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 06:24:57,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:24:57,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:57,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash -95520777, now seen corresponding path program 1 times [2023-09-01 06:24:57,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:57,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783229353] [2023-09-01 06:24:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:57,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:57,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:57,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783229353] [2023-09-01 06:24:57,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783229353] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:24:57,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:24:57,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 06:24:57,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360420520] [2023-09-01 06:24:57,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:24:57,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:24:57,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:57,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:24:57,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:24:57,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 221 [2023-09-01 06:24:57,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 51 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:57,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 221 [2023-09-01 06:24:57,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:57,565 INFO L130 PetriNetUnfolder]: 123/288 cut-off events. [2023-09-01 06:24:57,566 INFO L131 PetriNetUnfolder]: For 230/230 co-relation queries the response was YES. [2023-09-01 06:24:57,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 288 events. 123/288 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1107 event pairs, 8 based on Foata normal form. 17/263 useless extension candidates. Maximal degree in co-relation 806. Up to 180 conditions per place. [2023-09-01 06:24:57,568 INFO L137 encePairwiseOnDemand]: 216/221 looper letters, 33 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2023-09-01 06:24:57,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 311 flow [2023-09-01 06:24:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:24:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:24:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-09-01 06:24:57,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49321266968325794 [2023-09-01 06:24:57,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-09-01 06:24:57,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-09-01 06:24:57,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:57,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-09-01 06:24:57,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,573 INFO L175 Difference]: Start difference. First operand has 40 places, 51 transitions, 292 flow. Second operand 3 states and 327 transitions. [2023-09-01 06:24:57,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 311 flow [2023-09-01 06:24:57,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 292 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-09-01 06:24:57,575 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 202 flow [2023-09-01 06:24:57,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2023-09-01 06:24:57,576 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-09-01 06:24:57,576 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 202 flow [2023-09-01 06:24:57,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:57,577 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:24:57,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:24:57,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:57,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash 188723371, now seen corresponding path program 1 times [2023-09-01 06:24:57,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:57,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711595807] [2023-09-01 06:24:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:57,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:57,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:57,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711595807] [2023-09-01 06:24:57,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711595807] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:24:57,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689992269] [2023-09-01 06:24:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:57,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:24:57,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:24:57,649 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) [2023-09-01 06:24:57,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 06:24:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:57,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:24:57,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:24:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:57,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:24:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689992269] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:24:57,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:24:57,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-09-01 06:24:57,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700863562] [2023-09-01 06:24:57,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:24:57,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 06:24:57,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 06:24:57,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 06:24:57,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 221 [2023-09-01 06:24:57,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 202 flow. Second operand has 10 states, 10 states have (on average 93.8) internal successors, (938), 10 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:57,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:57,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 221 [2023-09-01 06:24:57,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:58,013 INFO L130 PetriNetUnfolder]: 220/445 cut-off events. [2023-09-01 06:24:58,014 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2023-09-01 06:24:58,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 445 events. 220/445 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1670 event pairs, 59 based on Foata normal form. 10/384 useless extension candidates. Maximal degree in co-relation 1335. Up to 136 conditions per place. [2023-09-01 06:24:58,016 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 60 selfloop transitions, 24 changer transitions 4/90 dead transitions. [2023-09-01 06:24:58,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 90 transitions, 570 flow [2023-09-01 06:24:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 06:24:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 06:24:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 903 transitions. [2023-09-01 06:24:58,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539969834087481 [2023-09-01 06:24:58,019 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 903 transitions. [2023-09-01 06:24:58,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 903 transitions. [2023-09-01 06:24:58,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:58,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 903 transitions. [2023-09-01 06:24:58,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 100.33333333333333) internal successors, (903), 9 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,025 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,025 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 202 flow. Second operand 9 states and 903 transitions. [2023-09-01 06:24:58,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 90 transitions, 570 flow [2023-09-01 06:24:58,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 90 transitions, 549 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 06:24:58,028 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 346 flow [2023-09-01 06:24:58,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=346, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-09-01 06:24:58,029 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2023-09-01 06:24:58,029 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 346 flow [2023-09-01 06:24:58,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.8) internal successors, (938), 10 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:58,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:24:58,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 06:24:58,242 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,SelfDestructingSolverStorable5 [2023-09-01 06:24:58,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:58,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:58,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1678997361, now seen corresponding path program 1 times [2023-09-01 06:24:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:58,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576533002] [2023-09-01 06:24:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:58,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:58,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:58,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576533002] [2023-09-01 06:24:58,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576533002] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:24:58,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:24:58,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:24:58,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591908883] [2023-09-01 06:24:58,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:24:58,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:24:58,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:58,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:24:58,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:24:58,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 221 [2023-09-01 06:24:58,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:58,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 221 [2023-09-01 06:24:58,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:58,353 INFO L130 PetriNetUnfolder]: 159/349 cut-off events. [2023-09-01 06:24:58,353 INFO L131 PetriNetUnfolder]: For 552/552 co-relation queries the response was YES. [2023-09-01 06:24:58,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 349 events. 159/349 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1300 event pairs, 56 based on Foata normal form. 33/333 useless extension candidates. Maximal degree in co-relation 1149. Up to 189 conditions per place. [2023-09-01 06:24:58,355 INFO L137 encePairwiseOnDemand]: 214/221 looper letters, 44 selfloop transitions, 8 changer transitions 1/55 dead transitions. [2023-09-01 06:24:58,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 453 flow [2023-09-01 06:24:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:24:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:24:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-09-01 06:24:58,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947209653092006 [2023-09-01 06:24:58,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-09-01 06:24:58,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-09-01 06:24:58,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:58,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-09-01 06:24:58,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,360 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 346 flow. Second operand 3 states and 328 transitions. [2023-09-01 06:24:58,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 453 flow [2023-09-01 06:24:58,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 442 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 06:24:58,362 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 331 flow [2023-09-01 06:24:58,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-09-01 06:24:58,363 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-09-01 06:24:58,363 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 331 flow [2023-09-01 06:24:58,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:58,364 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 06:24:58,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:24:58,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:58,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:58,364 INFO L85 PathProgramCache]: Analyzing trace with hash 976583335, now seen corresponding path program 1 times [2023-09-01 06:24:58,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:58,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964012822] [2023-09-01 06:24:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:58,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:58,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:58,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964012822] [2023-09-01 06:24:58,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964012822] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:24:58,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500907040] [2023-09-01 06:24:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:58,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:24:58,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:24:58,402 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) [2023-09-01 06:24:58,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 06:24:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:58,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:24:58,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:24:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:58,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:24:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500907040] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:24:58,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:24:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 06:24:58,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256479569] [2023-09-01 06:24:58,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:24:58,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:24:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:24:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:24:58,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-09-01 06:24:58,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 107.28571428571429) internal successors, (751), 7 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:58,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-09-01 06:24:58,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:58,678 INFO L130 PetriNetUnfolder]: 233/550 cut-off events. [2023-09-01 06:24:58,678 INFO L131 PetriNetUnfolder]: For 1213/1221 co-relation queries the response was YES. [2023-09-01 06:24:58,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 550 events. 233/550 cut-off events. For 1213/1221 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2416 event pairs, 26 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 1863. Up to 137 conditions per place. [2023-09-01 06:24:58,682 INFO L137 encePairwiseOnDemand]: 217/221 looper letters, 111 selfloop transitions, 9 changer transitions 3/132 dead transitions. [2023-09-01 06:24:58,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 132 transitions, 1178 flow [2023-09-01 06:24:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 06:24:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 06:24:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 812 transitions. [2023-09-01 06:24:58,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248868778280543 [2023-09-01 06:24:58,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 812 transitions. [2023-09-01 06:24:58,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 812 transitions. [2023-09-01 06:24:58,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:58,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 812 transitions. [2023-09-01 06:24:58,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 221.0) internal successors, (1768), 8 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 221.0) internal successors, (1768), 8 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,689 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 331 flow. Second operand 7 states and 812 transitions. [2023-09-01 06:24:58,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 132 transitions, 1178 flow [2023-09-01 06:24:58,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 132 transitions, 1110 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-09-01 06:24:58,694 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 364 flow [2023-09-01 06:24:58,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-09-01 06:24:58,695 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-09-01 06:24:58,695 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 364 flow [2023-09-01 06:24:58,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.28571428571429) internal successors, (751), 7 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:58,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:58,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 06:24:58,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 06:24:58,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:24:58,901 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:58,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:58,902 INFO L85 PathProgramCache]: Analyzing trace with hash 976583330, now seen corresponding path program 1 times [2023-09-01 06:24:58,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:58,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526909168] [2023-09-01 06:24:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:58,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:58,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526909168] [2023-09-01 06:24:58,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526909168] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:24:58,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573803156] [2023-09-01 06:24:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:58,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:24:58,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:24:58,947 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) [2023-09-01 06:24:58,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 06:24:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:59,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 06:24:59,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:24:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:59,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:24:59,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573803156] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:24:59,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:24:59,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 06:24:59,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428046376] [2023-09-01 06:24:59,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:24:59,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:24:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:24:59,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 06:24:59,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-09-01 06:24:59,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:59,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-09-01 06:24:59,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:59,148 INFO L130 PetriNetUnfolder]: 178/475 cut-off events. [2023-09-01 06:24:59,148 INFO L131 PetriNetUnfolder]: For 1335/1343 co-relation queries the response was YES. [2023-09-01 06:24:59,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 475 events. 178/475 cut-off events. For 1335/1343 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2185 event pairs, 77 based on Foata normal form. 28/501 useless extension candidates. Maximal degree in co-relation 1706. Up to 379 conditions per place. [2023-09-01 06:24:59,151 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 44 selfloop transitions, 2 changer transitions 6/60 dead transitions. [2023-09-01 06:24:59,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 503 flow [2023-09-01 06:24:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 06:24:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 06:24:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2023-09-01 06:24:59,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505656108597285 [2023-09-01 06:24:59,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2023-09-01 06:24:59,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2023-09-01 06:24:59,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:59,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2023-09-01 06:24:59,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,158 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,158 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 364 flow. Second operand 4 states and 447 transitions. [2023-09-01 06:24:59,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 503 flow [2023-09-01 06:24:59,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 495 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 06:24:59,162 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 326 flow [2023-09-01 06:24:59,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2023-09-01 06:24:59,163 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-09-01 06:24:59,163 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 326 flow [2023-09-01 06:24:59,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:59,164 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:24:59,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 06:24:59,369 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 [2023-09-01 06:24:59,370 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:59,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1231779423, now seen corresponding path program 1 times [2023-09-01 06:24:59,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:59,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885346552] [2023-09-01 06:24:59,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:59,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:59,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:59,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885346552] [2023-09-01 06:24:59,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885346552] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:24:59,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:24:59,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 06:24:59,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161691143] [2023-09-01 06:24:59,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:24:59,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 06:24:59,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:59,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 06:24:59,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 06:24:59,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-09-01 06:24:59,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:59,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-09-01 06:24:59,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:59,545 INFO L130 PetriNetUnfolder]: 245/577 cut-off events. [2023-09-01 06:24:59,545 INFO L131 PetriNetUnfolder]: For 1298/1298 co-relation queries the response was YES. [2023-09-01 06:24:59,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 577 events. 245/577 cut-off events. For 1298/1298 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2481 event pairs, 62 based on Foata normal form. 4/581 useless extension candidates. Maximal degree in co-relation 2115. Up to 207 conditions per place. [2023-09-01 06:24:59,549 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 58 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2023-09-01 06:24:59,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 633 flow [2023-09-01 06:24:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:24:59,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:24:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 507 transitions. [2023-09-01 06:24:59,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2023-09-01 06:24:59,551 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 507 transitions. [2023-09-01 06:24:59,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 507 transitions. [2023-09-01 06:24:59,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:59,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 507 transitions. [2023-09-01 06:24:59,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,554 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,554 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 326 flow. Second operand 5 states and 507 transitions. [2023-09-01 06:24:59,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 633 flow [2023-09-01 06:24:59,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 607 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-09-01 06:24:59,559 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 323 flow [2023-09-01 06:24:59,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-09-01 06:24:59,559 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-09-01 06:24:59,559 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 323 flow [2023-09-01 06:24:59,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:59,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:24:59,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:24:59,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:59,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1895118489, now seen corresponding path program 1 times [2023-09-01 06:24:59,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:59,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011028693] [2023-09-01 06:24:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:59,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:59,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:59,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011028693] [2023-09-01 06:24:59,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011028693] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:24:59,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:24:59,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 06:24:59,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871986070] [2023-09-01 06:24:59,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:24:59,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 06:24:59,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:24:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 06:24:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 06:24:59,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 221 [2023-09-01 06:24:59,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:24:59,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 221 [2023-09-01 06:24:59,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:24:59,826 INFO L130 PetriNetUnfolder]: 225/532 cut-off events. [2023-09-01 06:24:59,826 INFO L131 PetriNetUnfolder]: For 1267/1267 co-relation queries the response was YES. [2023-09-01 06:24:59,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 532 events. 225/532 cut-off events. For 1267/1267 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2186 event pairs, 94 based on Foata normal form. 4/535 useless extension candidates. Maximal degree in co-relation 2009. Up to 333 conditions per place. [2023-09-01 06:24:59,829 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 50 selfloop transitions, 10 changer transitions 16/78 dead transitions. [2023-09-01 06:24:59,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 647 flow [2023-09-01 06:24:59,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 06:24:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 06:24:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 666 transitions. [2023-09-01 06:24:59,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305106658047835 [2023-09-01 06:24:59,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 666 transitions. [2023-09-01 06:24:59,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 666 transitions. [2023-09-01 06:24:59,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:24:59,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 666 transitions. [2023-09-01 06:24:59,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 221.0) internal successors, (1768), 8 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,837 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 221.0) internal successors, (1768), 8 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,837 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 323 flow. Second operand 7 states and 666 transitions. [2023-09-01 06:24:59,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 647 flow [2023-09-01 06:24:59,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 641 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:24:59,842 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 368 flow [2023-09-01 06:24:59,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2023-09-01 06:24:59,843 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-09-01 06:24:59,843 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 368 flow [2023-09-01 06:24:59,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:24:59,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:24:59,844 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:24:59,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:24:59,844 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:24:59,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:24:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash -801990731, now seen corresponding path program 1 times [2023-09-01 06:24:59,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:24:59,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434085688] [2023-09-01 06:24:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:59,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:24:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:24:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:24:59,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:24:59,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434085688] [2023-09-01 06:24:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434085688] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:24:59,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120742396] [2023-09-01 06:24:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:24:59,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:24:59,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:24:59,986 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:25:00,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 06:25:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:25:00,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 06:25:00,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:25:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:00,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:25:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120742396] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:25:00,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:25:00,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 06:25:00,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470164448] [2023-09-01 06:25:00,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:25:00,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 06:25:00,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:25:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 06:25:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-09-01 06:25:00,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-09-01 06:25:00,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 368 flow. Second operand has 18 states, 18 states have (on average 92.83333333333333) internal successors, (1671), 18 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:00,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:25:00,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-09-01 06:25:00,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:25:00,487 INFO L130 PetriNetUnfolder]: 267/632 cut-off events. [2023-09-01 06:25:00,487 INFO L131 PetriNetUnfolder]: For 1853/1853 co-relation queries the response was YES. [2023-09-01 06:25:00,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2441 conditions, 632 events. 267/632 cut-off events. For 1853/1853 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2757 event pairs, 106 based on Foata normal form. 26/657 useless extension candidates. Maximal degree in co-relation 2408. Up to 204 conditions per place. [2023-09-01 06:25:00,491 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 63 selfloop transitions, 25 changer transitions 17/107 dead transitions. [2023-09-01 06:25:00,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 908 flow [2023-09-01 06:25:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 06:25:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 06:25:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1437 transitions. [2023-09-01 06:25:00,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334841628959276 [2023-09-01 06:25:00,517 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1437 transitions. [2023-09-01 06:25:00,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1437 transitions. [2023-09-01 06:25:00,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:25:00,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1437 transitions. [2023-09-01 06:25:00,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 95.8) internal successors, (1437), 15 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:00,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:00,526 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:00,526 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 368 flow. Second operand 15 states and 1437 transitions. [2023-09-01 06:25:00,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 908 flow [2023-09-01 06:25:00,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 902 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:25:00,532 INFO L231 Difference]: Finished difference. Result has 76 places, 54 transitions, 496 flow [2023-09-01 06:25:00,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=496, PETRI_PLACES=76, PETRI_TRANSITIONS=54} [2023-09-01 06:25:00,534 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2023-09-01 06:25:00,534 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 496 flow [2023-09-01 06:25:00,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 92.83333333333333) internal successors, (1671), 18 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:00,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:00,535 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2023-09-01 06:25:00,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 06:25:00,741 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,SelfDestructingSolverStorable11 [2023-09-01 06:25:00,742 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:25:00,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:00,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1155858341, now seen corresponding path program 2 times [2023-09-01 06:25:00,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:00,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547162514] [2023-09-01 06:25:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:00,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:25:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:00,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:25:00,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547162514] [2023-09-01 06:25:00,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547162514] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:25:00,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209338111] [2023-09-01 06:25:00,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:25:00,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:25:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:25:00,849 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) [2023-09-01 06:25:00,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 06:25:00,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:25:00,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:25:00,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 06:25:00,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:25:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:01,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:25:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:01,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209338111] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:25:01,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:25:01,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 25 [2023-09-01 06:25:01,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015525593] [2023-09-01 06:25:01,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:25:01,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 06:25:01,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:25:01,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 06:25:01,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2023-09-01 06:25:01,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 221 [2023-09-01 06:25:01,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 54 transitions, 496 flow. Second operand has 25 states, 25 states have (on average 91.08) internal successors, (2277), 25 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:01,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:25:01,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 221 [2023-09-01 06:25:01,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:25:02,129 INFO L130 PetriNetUnfolder]: 272/701 cut-off events. [2023-09-01 06:25:02,129 INFO L131 PetriNetUnfolder]: For 3294/3294 co-relation queries the response was YES. [2023-09-01 06:25:02,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 701 events. 272/701 cut-off events. For 3294/3294 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2819 event pairs, 44 based on Foata normal form. 32/733 useless extension candidates. Maximal degree in co-relation 3050. Up to 157 conditions per place. [2023-09-01 06:25:02,135 INFO L137 encePairwiseOnDemand]: 211/221 looper letters, 172 selfloop transitions, 67 changer transitions 38/279 dead transitions. [2023-09-01 06:25:02,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 279 transitions, 2736 flow [2023-09-01 06:25:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-09-01 06:25:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-09-01 06:25:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3578 transitions. [2023-09-01 06:25:02,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4260538223386521 [2023-09-01 06:25:02,158 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3578 transitions. [2023-09-01 06:25:02,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3578 transitions. [2023-09-01 06:25:02,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:25:02,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3578 transitions. [2023-09-01 06:25:02,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 94.15789473684211) internal successors, (3578), 38 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:02,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 221.0) internal successors, (8619), 39 states have internal predecessors, (8619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:02,181 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 221.0) internal successors, (8619), 39 states have internal predecessors, (8619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:02,181 INFO L175 Difference]: Start difference. First operand has 76 places, 54 transitions, 496 flow. Second operand 38 states and 3578 transitions. [2023-09-01 06:25:02,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 279 transitions, 2736 flow [2023-09-01 06:25:02,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 279 transitions, 2612 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-09-01 06:25:02,195 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 1202 flow [2023-09-01 06:25:02,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1202, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2023-09-01 06:25:02,196 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2023-09-01 06:25:02,196 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 1202 flow [2023-09-01 06:25:02,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 91.08) internal successors, (2277), 25 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:02,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:02,197 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:25:02,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 06:25:02,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:25:02,403 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:25:02,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:02,403 INFO L85 PathProgramCache]: Analyzing trace with hash 907417041, now seen corresponding path program 1 times [2023-09-01 06:25:02,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:02,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497920041] [2023-09-01 06:25:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:02,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:25:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:25:02,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497920041] [2023-09-01 06:25:02,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497920041] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:25:02,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632352113] [2023-09-01 06:25:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:02,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:25:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:25:02,513 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) [2023-09-01 06:25:02,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 06:25:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:25:02,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 06:25:02,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:25:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-09-01 06:25:02,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:25:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-09-01 06:25:02,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632352113] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:25:02,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:25:02,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16 [2023-09-01 06:25:02,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216185199] [2023-09-01 06:25:02,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:25:02,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 06:25:02,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:25:02,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 06:25:02,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-09-01 06:25:02,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-09-01 06:25:02,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 1202 flow. Second operand has 16 states, 16 states have (on average 87.5) internal successors, (1400), 16 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:02,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:25:02,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-09-01 06:25:02,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:25:03,930 INFO L130 PetriNetUnfolder]: 402/1097 cut-off events. [2023-09-01 06:25:03,931 INFO L131 PetriNetUnfolder]: For 10910/10910 co-relation queries the response was YES. [2023-09-01 06:25:03,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5625 conditions, 1097 events. 402/1097 cut-off events. For 10910/10910 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4452 event pairs, 44 based on Foata normal form. 80/1177 useless extension candidates. Maximal degree in co-relation 5579. Up to 263 conditions per place. [2023-09-01 06:25:03,946 INFO L137 encePairwiseOnDemand]: 209/221 looper letters, 244 selfloop transitions, 159 changer transitions 20/425 dead transitions. [2023-09-01 06:25:03,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 425 transitions, 4622 flow [2023-09-01 06:25:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-09-01 06:25:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-09-01 06:25:03,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6108 transitions. [2023-09-01 06:25:03,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40055085579382255 [2023-09-01 06:25:03,962 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6108 transitions. [2023-09-01 06:25:03,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6108 transitions. [2023-09-01 06:25:03,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:25:03,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6108 transitions. [2023-09-01 06:25:03,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 88.52173913043478) internal successors, (6108), 69 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:04,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 221.0) internal successors, (15470), 70 states have internal predecessors, (15470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:04,009 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 221.0) internal successors, (15470), 70 states have internal predecessors, (15470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:04,009 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 1202 flow. Second operand 69 states and 6108 transitions. [2023-09-01 06:25:04,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 425 transitions, 4622 flow [2023-09-01 06:25:04,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 425 transitions, 4316 flow, removed 85 selfloop flow, removed 16 redundant places. [2023-09-01 06:25:04,069 INFO L231 Difference]: Finished difference. Result has 192 places, 228 transitions, 2968 flow [2023-09-01 06:25:04,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=2968, PETRI_PLACES=192, PETRI_TRANSITIONS=228} [2023-09-01 06:25:04,070 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2023-09-01 06:25:04,070 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 228 transitions, 2968 flow [2023-09-01 06:25:04,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.5) internal successors, (1400), 16 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:04,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:04,071 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:25:04,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-01 06:25:04,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:25:04,277 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:25:04,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash 97901477, now seen corresponding path program 2 times [2023-09-01 06:25:04,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:04,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522052623] [2023-09-01 06:25:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:04,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:25:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:04,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:25:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522052623] [2023-09-01 06:25:04,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522052623] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:25:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75239865] [2023-09-01 06:25:04,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:25:04,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:25:04,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:25:04,410 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) [2023-09-01 06:25:04,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 06:25:04,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:25:04,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:25:04,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 06:25:04,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:25:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-09-01 06:25:04,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:25:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-09-01 06:25:04,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75239865] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:25:04,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:25:04,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-09-01 06:25:04,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945246579] [2023-09-01 06:25:04,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:25:04,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 06:25:04,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:25:04,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 06:25:04,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-09-01 06:25:04,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-09-01 06:25:04,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 228 transitions, 2968 flow. Second operand has 25 states, 25 states have (on average 86.68) internal successors, (2167), 25 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:04,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:25:04,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-09-01 06:25:04,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:25:06,984 INFO L130 PetriNetUnfolder]: 747/2044 cut-off events. [2023-09-01 06:25:06,985 INFO L131 PetriNetUnfolder]: For 52489/52489 co-relation queries the response was YES. [2023-09-01 06:25:07,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13454 conditions, 2044 events. 747/2044 cut-off events. For 52489/52489 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9899 event pairs, 41 based on Foata normal form. 112/2156 useless extension candidates. Maximal degree in co-relation 13384. Up to 517 conditions per place. [2023-09-01 06:25:07,013 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 266 selfloop transitions, 392 changer transitions 26/686 dead transitions. [2023-09-01 06:25:07,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 686 transitions, 9338 flow [2023-09-01 06:25:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-09-01 06:25:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-09-01 06:25:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 8502 transitions. [2023-09-01 06:25:07,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39660400242571253 [2023-09-01 06:25:07,033 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 8502 transitions. [2023-09-01 06:25:07,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 8502 transitions. [2023-09-01 06:25:07,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:25:07,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 8502 transitions. [2023-09-01 06:25:07,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 87.64948453608247) internal successors, (8502), 97 states have internal predecessors, (8502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:07,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 221.0) internal successors, (21658), 98 states have internal predecessors, (21658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:07,090 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 221.0) internal successors, (21658), 98 states have internal predecessors, (21658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:07,091 INFO L175 Difference]: Start difference. First operand has 192 places, 228 transitions, 2968 flow. Second operand 97 states and 8502 transitions. [2023-09-01 06:25:07,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 686 transitions, 9338 flow [2023-09-01 06:25:07,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 686 transitions, 8639 flow, removed 271 selfloop flow, removed 13 redundant places. [2023-09-01 06:25:07,253 INFO L231 Difference]: Finished difference. Result has 298 places, 432 transitions, 6113 flow [2023-09-01 06:25:07,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=2568, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=6113, PETRI_PLACES=298, PETRI_TRANSITIONS=432} [2023-09-01 06:25:07,253 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 269 predicate places. [2023-09-01 06:25:07,253 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 432 transitions, 6113 flow [2023-09-01 06:25:07,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 86.68) internal successors, (2167), 25 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:07,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:07,254 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 7, 1, 1, 1, 1] [2023-09-01 06:25:07,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-09-01 06:25:07,455 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,SelfDestructingSolverStorable14 [2023-09-01 06:25:07,455 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:25:07,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2098528539, now seen corresponding path program 2 times [2023-09-01 06:25:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:07,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927018861] [2023-09-01 06:25:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:07,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:25:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:07,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:25:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927018861] [2023-09-01 06:25:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927018861] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:25:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721731753] [2023-09-01 06:25:07,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:25:07,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:25:07,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:25:07,654 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:25:07,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 06:25:07,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:25:07,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:25:07,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 06:25:07,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:25:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:07,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:25:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:07,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721731753] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:25:07,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:25:07,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-09-01 06:25:07,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952259069] [2023-09-01 06:25:07,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:25:07,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 06:25:07,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:25:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 06:25:07,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2023-09-01 06:25:08,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-09-01 06:25:08,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 432 transitions, 6113 flow. Second operand has 19 states, 19 states have (on average 107.73684210526316) internal successors, (2047), 19 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:08,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:25:08,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-09-01 06:25:08,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:25:09,523 INFO L130 PetriNetUnfolder]: 1391/4351 cut-off events. [2023-09-01 06:25:09,523 INFO L131 PetriNetUnfolder]: For 436607/436616 co-relation queries the response was YES. [2023-09-01 06:25:09,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38435 conditions, 4351 events. 1391/4351 cut-off events. For 436607/436616 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 23799 event pairs, 89 based on Foata normal form. 579/4930 useless extension candidates. Maximal degree in co-relation 38346. Up to 940 conditions per place. [2023-09-01 06:25:09,602 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 830 selfloop transitions, 116 changer transitions 29/995 dead transitions. [2023-09-01 06:25:09,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 995 transitions, 16521 flow [2023-09-01 06:25:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 06:25:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 06:25:09,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2060 transitions. [2023-09-01 06:25:09,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178481649069885 [2023-09-01 06:25:09,605 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2060 transitions. [2023-09-01 06:25:09,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2060 transitions. [2023-09-01 06:25:09,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:25:09,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2060 transitions. [2023-09-01 06:25:09,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 114.44444444444444) internal successors, (2060), 18 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:09,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 221.0) internal successors, (4199), 19 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:09,612 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 221.0) internal successors, (4199), 19 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:09,613 INFO L175 Difference]: Start difference. First operand has 298 places, 432 transitions, 6113 flow. Second operand 18 states and 2060 transitions. [2023-09-01 06:25:09,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 995 transitions, 16521 flow [2023-09-01 06:25:09,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 995 transitions, 15516 flow, removed 278 selfloop flow, removed 22 redundant places. [2023-09-01 06:25:09,948 INFO L231 Difference]: Finished difference. Result has 301 places, 440 transitions, 6228 flow [2023-09-01 06:25:09,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=5554, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6228, PETRI_PLACES=301, PETRI_TRANSITIONS=440} [2023-09-01 06:25:09,950 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 272 predicate places. [2023-09-01 06:25:09,950 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 440 transitions, 6228 flow [2023-09-01 06:25:09,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.73684210526316) internal successors, (2047), 19 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:09,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:09,951 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 16, 12, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:25:09,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 06:25:10,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 06:25:10,158 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:25:10,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash -743466793, now seen corresponding path program 3 times [2023-09-01 06:25:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586202242] [2023-09-01 06:25:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:10,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:25:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:25:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586202242] [2023-09-01 06:25:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586202242] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:25:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493181079] [2023-09-01 06:25:10,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:25:10,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:25:10,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:25:10,625 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:25:10,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 06:25:10,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-09-01 06:25:10,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:25:10,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 06:25:10,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:25:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 32 proven. 262 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-09-01 06:25:11,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:25:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 32 proven. 262 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-09-01 06:25:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493181079] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:25:11,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:25:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 39 [2023-09-01 06:25:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086799347] [2023-09-01 06:25:11,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:25:11,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-09-01 06:25:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:25:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-09-01 06:25:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1197, Unknown=0, NotChecked=0, Total=1482 [2023-09-01 06:25:11,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-09-01 06:25:11,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 440 transitions, 6228 flow. Second operand has 39 states, 39 states have (on average 86.53846153846153) internal successors, (3375), 39 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:11,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:25:11,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-09-01 06:25:11,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:25:22,945 INFO L130 PetriNetUnfolder]: 2894/7957 cut-off events. [2023-09-01 06:25:22,945 INFO L131 PetriNetUnfolder]: For 673877/673877 co-relation queries the response was YES. [2023-09-01 06:25:23,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77005 conditions, 7957 events. 2894/7957 cut-off events. For 673877/673877 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 45939 event pairs, 72 based on Foata normal form. 193/8150 useless extension candidates. Maximal degree in co-relation 76911. Up to 1977 conditions per place. [2023-09-01 06:25:23,043 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 1320 selfloop transitions, 1307 changer transitions 259/2888 dead transitions. [2023-09-01 06:25:23,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 2888 transitions, 47332 flow [2023-09-01 06:25:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 413 states. [2023-09-01 06:25:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2023-09-01 06:25:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 36435 transitions. [2023-09-01 06:25:23,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39918705422194956 [2023-09-01 06:25:23,207 INFO L72 ComplementDD]: Start complementDD. Operand 413 states and 36435 transitions. [2023-09-01 06:25:23,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 413 states and 36435 transitions. [2023-09-01 06:25:23,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:25:23,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 413 states and 36435 transitions. [2023-09-01 06:25:23,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 414 states, 413 states have (on average 88.22033898305085) internal successors, (36435), 413 states have internal predecessors, (36435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:23,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 414 states, 414 states have (on average 221.0) internal successors, (91494), 414 states have internal predecessors, (91494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:23,418 INFO L81 ComplementDD]: Finished complementDD. Result has 414 states, 414 states have (on average 221.0) internal successors, (91494), 414 states have internal predecessors, (91494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:23,419 INFO L175 Difference]: Start difference. First operand has 301 places, 440 transitions, 6228 flow. Second operand 413 states and 36435 transitions. [2023-09-01 06:25:23,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 2888 transitions, 47332 flow [2023-09-01 06:25:24,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 2888 transitions, 41999 flow, removed 2142 selfloop flow, removed 9 redundant places. [2023-09-01 06:25:24,043 INFO L231 Difference]: Finished difference. Result has 833 places, 1409 transitions, 25608 flow [2023-09-01 06:25:24,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=5650, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=413, PETRI_FLOW=25608, PETRI_PLACES=833, PETRI_TRANSITIONS=1409} [2023-09-01 06:25:24,044 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 804 predicate places. [2023-09-01 06:25:24,044 INFO L495 AbstractCegarLoop]: Abstraction has has 833 places, 1409 transitions, 25608 flow [2023-09-01 06:25:24,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 86.53846153846153) internal successors, (3375), 39 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:24,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:24,046 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 17, 9, 9, 9, 9, 1, 1, 1, 1] [2023-09-01 06:25:24,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 06:25:24,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 06:25:24,253 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:25:24,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:24,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1894708907, now seen corresponding path program 3 times [2023-09-01 06:25:24,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:24,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515171716] [2023-09-01 06:25:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:24,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:25:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:24,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:25:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515171716] [2023-09-01 06:25:24,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515171716] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:25:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174940785] [2023-09-01 06:25:24,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:25:24,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:25:24,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:25:24,707 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:25:24,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 06:25:24,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-09-01 06:25:24,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:25:24,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 06:25:24,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:25:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 34 proven. 506 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-09-01 06:25:25,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:25:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 34 proven. 506 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-09-01 06:25:25,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174940785] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:25:25,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:25:25,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 58 [2023-09-01 06:25:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486620125] [2023-09-01 06:25:25,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:25:25,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-09-01 06:25:25,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:25:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-09-01 06:25:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=2697, Unknown=0, NotChecked=0, Total=3306 [2023-09-01 06:25:26,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 221 [2023-09-01 06:25:26,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 833 places, 1409 transitions, 25608 flow. Second operand has 58 states, 58 states have (on average 91.06896551724138) internal successors, (5282), 58 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:26,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:25:26,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 221 [2023-09-01 06:25:26,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:25:32,857 INFO L130 PetriNetUnfolder]: 2719/8152 cut-off events. [2023-09-01 06:25:32,857 INFO L131 PetriNetUnfolder]: For 913008/913008 co-relation queries the response was YES. [2023-09-01 06:25:32,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80557 conditions, 8152 events. 2719/8152 cut-off events. For 913008/913008 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 48891 event pairs, 109 based on Foata normal form. 144/8296 useless extension candidates. Maximal degree in co-relation 80334. Up to 2138 conditions per place. [2023-09-01 06:25:33,008 INFO L137 encePairwiseOnDemand]: 211/221 looper letters, 1191 selfloop transitions, 823 changer transitions 84/2100 dead transitions. [2023-09-01 06:25:33,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 2100 transitions, 42959 flow [2023-09-01 06:25:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-09-01 06:25:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2023-09-01 06:25:33,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 9678 transitions. [2023-09-01 06:25:33,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42516364275359136 [2023-09-01 06:25:33,018 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 9678 transitions. [2023-09-01 06:25:33,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 9678 transitions. [2023-09-01 06:25:33,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:25:33,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 9678 transitions. [2023-09-01 06:25:33,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 104 states, 103 states have (on average 93.96116504854369) internal successors, (9678), 103 states have internal predecessors, (9678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:33,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 104 states, 104 states have (on average 221.0) internal successors, (22984), 104 states have internal predecessors, (22984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:33,048 INFO L81 ComplementDD]: Finished complementDD. Result has 104 states, 104 states have (on average 221.0) internal successors, (22984), 104 states have internal predecessors, (22984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:33,048 INFO L175 Difference]: Start difference. First operand has 833 places, 1409 transitions, 25608 flow. Second operand 103 states and 9678 transitions. [2023-09-01 06:25:33,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 2100 transitions, 42959 flow [2023-09-01 06:25:36,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 2100 transitions, 37956 flow, removed 1890 selfloop flow, removed 62 redundant places. [2023-09-01 06:25:36,390 INFO L231 Difference]: Finished difference. Result has 897 places, 1566 transitions, 27217 flow [2023-09-01 06:25:36,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=21070, PETRI_DIFFERENCE_MINUEND_PLACES=771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=677, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=27217, PETRI_PLACES=897, PETRI_TRANSITIONS=1566} [2023-09-01 06:25:36,392 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 868 predicate places. [2023-09-01 06:25:36,392 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 1566 transitions, 27217 flow [2023-09-01 06:25:36,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 91.06896551724138) internal successors, (5282), 58 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:36,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:36,393 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 12, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:25:36,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 06:25:36,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 06:25:36,593 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:25:36,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:36,594 INFO L85 PathProgramCache]: Analyzing trace with hash -987967957, now seen corresponding path program 4 times [2023-09-01 06:25:36,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:36,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230035106] [2023-09-01 06:25:36,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:36,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:25:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:25:37,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:25:37,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230035106] [2023-09-01 06:25:37,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230035106] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:25:37,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227949302] [2023-09-01 06:25:37,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 06:25:37,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:25:37,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:25:37,153 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:25:37,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 06:25:37,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 06:25:37,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:25:37,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 06:25:37,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:25:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 344 proven. 134 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-09-01 06:25:37,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:25:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 344 proven. 134 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-09-01 06:25:37,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227949302] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:25:37,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:25:37,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 49 [2023-09-01 06:25:37,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457813208] [2023-09-01 06:25:37,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:25:37,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-09-01 06:25:37,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:25:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-09-01 06:25:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1928, Unknown=0, NotChecked=0, Total=2352 [2023-09-01 06:25:38,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-09-01 06:25:38,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 1566 transitions, 27217 flow. Second operand has 49 states, 49 states have (on average 86.44897959183673) internal successors, (4236), 49 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:25:38,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:25:38,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-09-01 06:25:38,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:26:00,412 INFO L130 PetriNetUnfolder]: 4450/13490 cut-off events. [2023-09-01 06:26:00,412 INFO L131 PetriNetUnfolder]: For 2128769/2128769 co-relation queries the response was YES. [2023-09-01 06:26:00,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135256 conditions, 13490 events. 4450/13490 cut-off events. For 2128769/2128769 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 93376 event pairs, 136 based on Foata normal form. 311/13801 useless extension candidates. Maximal degree in co-relation 135007. Up to 3511 conditions per place. [2023-09-01 06:26:00,707 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 1829 selfloop transitions, 2564 changer transitions 43/4438 dead transitions. [2023-09-01 06:26:00,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1420 places, 4438 transitions, 90382 flow [2023-09-01 06:26:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 535 states. [2023-09-01 06:26:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2023-09-01 06:26:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 47067 transitions. [2023-09-01 06:26:00,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980800947266038 [2023-09-01 06:26:00,764 INFO L72 ComplementDD]: Start complementDD. Operand 535 states and 47067 transitions. [2023-09-01 06:26:00,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 535 states and 47067 transitions. [2023-09-01 06:26:00,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:26:00,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 535 states and 47067 transitions. [2023-09-01 06:26:00,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 536 states, 535 states have (on average 87.97570093457944) internal successors, (47067), 535 states have internal predecessors, (47067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:26:00,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 536 states, 536 states have (on average 221.0) internal successors, (118456), 536 states have internal predecessors, (118456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:26:00,973 INFO L81 ComplementDD]: Finished complementDD. Result has 536 states, 536 states have (on average 221.0) internal successors, (118456), 536 states have internal predecessors, (118456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:26:00,973 INFO L175 Difference]: Start difference. First operand has 897 places, 1566 transitions, 27217 flow. Second operand 535 states and 47067 transitions. [2023-09-01 06:26:00,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1420 places, 4438 transitions, 90382 flow [2023-09-01 06:26:08,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1387 places, 4438 transitions, 85604 flow, removed 2187 selfloop flow, removed 33 redundant places. [2023-09-01 06:26:08,210 INFO L231 Difference]: Finished difference. Result has 1572 places, 2785 transitions, 60663 flow [2023-09-01 06:26:08,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=25692, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=535, PETRI_FLOW=60663, PETRI_PLACES=1572, PETRI_TRANSITIONS=2785} [2023-09-01 06:26:08,212 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1543 predicate places. [2023-09-01 06:26:08,213 INFO L495 AbstractCegarLoop]: Abstraction has has 1572 places, 2785 transitions, 60663 flow [2023-09-01 06:26:08,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 86.44897959183673) internal successors, (4236), 49 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:26:08,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:26:08,214 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 19, 11, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:26:08,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 06:26:08,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:26:08,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:26:08,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:26:08,421 INFO L85 PathProgramCache]: Analyzing trace with hash -416934563, now seen corresponding path program 5 times [2023-09-01 06:26:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:26:08,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314717876] [2023-09-01 06:26:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:26:08,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:26:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:26:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:26:08,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:26:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314717876] [2023-09-01 06:26:08,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314717876] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:26:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810533228] [2023-09-01 06:26:08,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 06:26:08,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:26:08,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:26:08,957 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:26:08,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 06:26:09,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-09-01 06:26:09,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:26:09,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 06:26:09,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:26:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 390 proven. 296 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-09-01 06:26:09,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:26:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 390 proven. 296 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-09-01 06:26:09,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810533228] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:26:09,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:26:09,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 58 [2023-09-01 06:26:09,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154541008] [2023-09-01 06:26:09,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:26:09,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-09-01 06:26:09,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:26:09,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-09-01 06:26:09,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=2729, Unknown=0, NotChecked=0, Total=3306 [2023-09-01 06:26:10,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-09-01 06:26:10,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1572 places, 2785 transitions, 60663 flow. Second operand has 58 states, 58 states have (on average 86.41379310344827) internal successors, (5012), 58 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:26:10,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:26:10,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-09-01 06:26:10,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:26:53,934 INFO L130 PetriNetUnfolder]: 6454/19587 cut-off events. [2023-09-01 06:26:53,935 INFO L131 PetriNetUnfolder]: For 8193269/8193269 co-relation queries the response was YES. [2023-09-01 06:26:54,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275944 conditions, 19587 events. 6454/19587 cut-off events. For 8193269/8193269 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 148967 event pairs, 209 based on Foata normal form. 434/20021 useless extension candidates. Maximal degree in co-relation 275511. Up to 5083 conditions per place. [2023-09-01 06:26:54,612 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 2293 selfloop transitions, 3929 changer transitions 61/6285 dead transitions. [2023-09-01 06:26:54,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2253 places, 6285 transitions, 172618 flow [2023-09-01 06:26:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2023-09-01 06:26:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2023-09-01 06:26:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 60032 transitions. [2023-09-01 06:26:54,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977130439967405 [2023-09-01 06:26:54,667 INFO L72 ComplementDD]: Start complementDD. Operand 683 states and 60032 transitions. [2023-09-01 06:26:54,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 683 states and 60032 transitions. [2023-09-01 06:26:54,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:26:54,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 683 states and 60032 transitions. [2023-09-01 06:26:54,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 684 states, 683 states have (on average 87.89458272327965) internal successors, (60032), 683 states have internal predecessors, (60032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:26:55,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 684 states, 684 states have (on average 221.0) internal successors, (151164), 684 states have internal predecessors, (151164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:26:55,083 INFO L81 ComplementDD]: Finished complementDD. Result has 684 states, 684 states have (on average 221.0) internal successors, (151164), 684 states have internal predecessors, (151164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:26:55,084 INFO L175 Difference]: Start difference. First operand has 1572 places, 2785 transitions, 60663 flow. Second operand 683 states and 60032 transitions. [2023-09-01 06:26:55,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2253 places, 6285 transitions, 172618 flow [2023-09-01 06:27:42,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2225 places, 6285 transitions, 158987 flow, removed 6654 selfloop flow, removed 28 redundant places. [2023-09-01 06:27:42,433 INFO L231 Difference]: Finished difference. Result has 2423 places, 4181 transitions, 112641 flow [2023-09-01 06:27:42,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=52677, PETRI_DIFFERENCE_MINUEND_PLACES=1543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2577, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=683, PETRI_FLOW=112641, PETRI_PLACES=2423, PETRI_TRANSITIONS=4181} [2023-09-01 06:27:42,437 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2394 predicate places. [2023-09-01 06:27:42,438 INFO L495 AbstractCegarLoop]: Abstraction has has 2423 places, 4181 transitions, 112641 flow [2023-09-01 06:27:42,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 86.41379310344827) internal successors, (5012), 58 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:27:42,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:27:42,439 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 14, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 06:27:42,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 06:27:42,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-09-01 06:27:42,645 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:27:42,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:27:42,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1203149103, now seen corresponding path program 6 times [2023-09-01 06:27:42,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:27:42,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790678148] [2023-09-01 06:27:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:27:42,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:27:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:27:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 0 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:27:43,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:27:43,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790678148] [2023-09-01 06:27:43,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790678148] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:27:43,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236847961] [2023-09-01 06:27:43,193 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 06:27:43,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:27:43,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:27:43,194 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:27:43,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 06:27:43,461 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-09-01 06:27:43,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:27:43,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 06:27:43,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:27:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 40 proven. 447 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-09-01 06:27:43,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:27:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 40 proven. 447 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-09-01 06:27:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236847961] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:27:44,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:27:44,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 49 [2023-09-01 06:27:44,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195207135] [2023-09-01 06:27:44,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:27:44,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-09-01 06:27:44,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:27:44,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-09-01 06:27:44,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1930, Unknown=0, NotChecked=0, Total=2352 [2023-09-01 06:27:44,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-09-01 06:27:44,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2423 places, 4181 transitions, 112641 flow. Second operand has 49 states, 49 states have (on average 86.77551020408163) internal successors, (4252), 49 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:27:44,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:27:44,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-09-01 06:27:44,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:29:33,912 INFO L130 PetriNetUnfolder]: 13917/42001 cut-off events. [2023-09-01 06:29:33,913 INFO L131 PetriNetUnfolder]: For 38931729/38931729 co-relation queries the response was YES. [2023-09-01 06:29:40,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822298 conditions, 42001 events. 13917/42001 cut-off events. For 38931729/38931729 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 375413 event pairs, 388 based on Foata normal form. 785/42786 useless extension candidates. Maximal degree in co-relation 821668. Up to 11015 conditions per place. [2023-09-01 06:29:41,052 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 2630 selfloop transitions, 7860 changer transitions 118/10610 dead transitions. [2023-09-01 06:29:41,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2889 places, 10610 transitions, 365370 flow [2023-09-01 06:29:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 468 states. [2023-09-01 06:29:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2023-09-01 06:29:41,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 41114 transitions. [2023-09-01 06:29:41,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975132459295355 [2023-09-01 06:29:41,089 INFO L72 ComplementDD]: Start complementDD. Operand 468 states and 41114 transitions. [2023-09-01 06:29:41,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 468 states and 41114 transitions. [2023-09-01 06:29:41,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:29:41,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 468 states and 41114 transitions. [2023-09-01 06:29:41,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 469 states, 468 states have (on average 87.85042735042735) internal successors, (41114), 468 states have internal predecessors, (41114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:29:41,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 469 states, 469 states have (on average 221.0) internal successors, (103649), 469 states have internal predecessors, (103649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:29:41,226 INFO L81 ComplementDD]: Finished complementDD. Result has 469 states, 469 states have (on average 221.0) internal successors, (103649), 469 states have internal predecessors, (103649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:29:41,227 INFO L175 Difference]: Start difference. First operand has 2423 places, 4181 transitions, 112641 flow. Second operand 468 states and 41114 transitions. [2023-09-01 06:29:41,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2889 places, 10610 transitions, 365370 flow [2023-09-01 06:36:31,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2800 places, 10610 transitions, 303858 flow, removed 29791 selfloop flow, removed 89 redundant places. [2023-09-01 06:36:31,309 INFO L231 Difference]: Finished difference. Result has 2930 places, 8719 transitions, 264582 flow [2023-09-01 06:36:31,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=87922, PETRI_DIFFERENCE_MINUEND_PLACES=2333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3782, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=468, PETRI_FLOW=264582, PETRI_PLACES=2930, PETRI_TRANSITIONS=8719} [2023-09-01 06:36:31,314 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2901 predicate places. [2023-09-01 06:36:31,315 INFO L495 AbstractCegarLoop]: Abstraction has has 2930 places, 8719 transitions, 264582 flow [2023-09-01 06:36:31,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 86.77551020408163) internal successors, (4252), 49 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:36:31,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:36:31,316 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 22, 21, 12, 12, 12, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:36:31,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 06:36:31,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:36:31,517 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 06:36:31,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:36:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash -994563883, now seen corresponding path program 7 times [2023-09-01 06:36:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:36:31,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894593338] [2023-09-01 06:36:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:36:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:36:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:36:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:36:32,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:36:32,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894593338] [2023-09-01 06:36:32,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894593338] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:36:32,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140496255] [2023-09-01 06:36:32,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 06:36:32,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:36:32,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:36:32,069 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:36:32,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 06:36:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:36:32,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 06:36:32,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:36:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 474 proven. 414 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-09-01 06:36:32,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:36:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 474 proven. 414 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-09-01 06:36:33,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140496255] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:36:33,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:36:33,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 72 [2023-09-01 06:36:33,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102215765] [2023-09-01 06:36:33,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:36:33,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-09-01 06:36:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:36:33,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-09-01 06:36:33,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=4232, Unknown=0, NotChecked=0, Total=5112 [2023-09-01 06:36:33,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-09-01 06:36:33,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2930 places, 8719 transitions, 264582 flow. Second operand has 72 states, 72 states have (on average 86.30555555555556) internal successors, (6214), 72 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:36:33,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:36:33,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-09-01 06:36:33,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15