./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 AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 09:49:01,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:49:01,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:49:01,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:49:01,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:49:01,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:49:01,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:49:01,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:49:01,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:49:01,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:49:01,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:49:01,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:49:01,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:49:01,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:49:01,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:49:01,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:49:01,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:49:01,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:49:01,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:49:01,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:49:01,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:49:01,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:49:01,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:49:01,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:49:01,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:49:01,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:49:01,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:49:01,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:49:01,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:49:01,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:49:01,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:49:01,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:49:01,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:49:01,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:49:01,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:49:01,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:49:01,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:49:01,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:49:01,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:49:01,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:49:01,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:49:01,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:49:01,765 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:49:01,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:49:01,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:49:01,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:49:01,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:49:01,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:49:01,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:49:01,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:49:01,769 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:49:01,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:49:01,770 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:49:01,770 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:49:01,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:49:01,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:49:01,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:49:01,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:49:01,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:49:01,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:49:01,771 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:49:01,771 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:49:01,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:49:01,772 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:49:01,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:49:01,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:49:01,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:49:01,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:49:01,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:49:01,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:49:01,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:49:01,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:49:01,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:49:01,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:49:01,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:49:01,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:49:01,774 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:49:01,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:49:01,775 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:49:01,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:49:02,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:49:02,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:49:02,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:49:02,090 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:49:02,091 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:49:02,092 INFO L432 ainManager$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 [2023-08-30 09:49:03,411 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:49:03,658 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:49:03,659 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-08-30 09:49:03,672 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c53f054/b58404680456498b81b45ce39e8e689e/FLAG1ae51b902 [2023-08-30 09:49:03,693 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c53f054/b58404680456498b81b45ce39e8e689e [2023-08-30 09:49:03,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:49:03,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:49:03,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:49:03,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:49:03,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:49:03,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:49:03" (1/1) ... [2023-08-30 09:49:03,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56cc3cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:03, skipping insertion in model container [2023-08-30 09:49:03,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:49:03" (1/1) ... [2023-08-30 09:49:03,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:49:03,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:49:03,885 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] [2023-08-30 09:49:04,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:49:04,012 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:49:04,024 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] [2023-08-30 09:49:04,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:49:04,120 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:49:04,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04 WrapperNode [2023-08-30 09:49:04,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:49:04,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:49:04,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:49:04,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:49:04,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,188 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2023-08-30 09:49:04,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:49:04,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:49:04,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:49:04,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:49:04,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:49:04,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:49:04,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:49:04,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:49:04,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (1/1) ... [2023-08-30 09:49:04,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:49:04,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:04,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 09:49:04,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 09:49:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-30 09:49:04,285 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-30 09:49:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:49:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:49:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:49:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:49:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:49:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:49:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:49:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:49:04,288 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 09:49:04,390 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:49:04,409 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:49:04,652 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:49:04,659 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:49:04,663 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 09:49:04,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:49:04 BoogieIcfgContainer [2023-08-30 09:49:04,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:49:04,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:49:04,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:49:04,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:49:04,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:49:03" (1/3) ... [2023-08-30 09:49:04,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db2da90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:49:04, skipping insertion in model container [2023-08-30 09:49:04,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:04" (2/3) ... [2023-08-30 09:49:04,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db2da90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:49:04, skipping insertion in model container [2023-08-30 09:49:04,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:49:04" (3/3) ... [2023-08-30 09:49:04,674 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-08-30 09:49:04,682 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:49:04,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:49:04,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 09:49:04,690 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:49:04,774 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 09:49:04,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 235 flow [2023-08-30 09:49:04,903 INFO L130 PetriNetUnfolder]: 10/114 cut-off events. [2023-08-30 09:49:04,903 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:04,908 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. [2023-08-30 09:49:04,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 235 flow [2023-08-30 09:49:04,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 114 transitions, 231 flow [2023-08-30 09:49:04,932 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:49:04,953 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 114 transitions, 231 flow [2023-08-30 09:49:04,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 114 transitions, 231 flow [2023-08-30 09:49:04,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 114 transitions, 231 flow [2023-08-30 09:49:04,983 INFO L130 PetriNetUnfolder]: 10/114 cut-off events. [2023-08-30 09:49:04,983 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:04,984 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. [2023-08-30 09:49:04,986 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312 [2023-08-30 09:49:07,791 INFO L134 LiptonReduction]: Checked pairs total: 6018 [2023-08-30 09:49:07,791 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-30 09:49:07,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:49:07,809 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;@115fec3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:49:07,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 09:49:07,815 INFO L130 PetriNetUnfolder]: 4/20 cut-off events. [2023-08-30 09:49:07,816 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:07,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:07,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:49:07,817 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)] === [2023-08-30 09:49:07,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:07,821 INFO L85 PathProgramCache]: Analyzing trace with hash 653838975, now seen corresponding path program 1 times [2023-08-30 09:49:07,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:07,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688319859] [2023-08-30 09:49:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:07,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:08,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:08,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688319859] [2023-08-30 09:49:08,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688319859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:08,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:08,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:49:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250581929] [2023-08-30 09:49:08,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:08,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:08,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:08,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 221 [2023-08-30 09:49:08,227 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) [2023-08-30 09:49:08,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:08,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 221 [2023-08-30 09:49:08,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:08,313 INFO L130 PetriNetUnfolder]: 146/279 cut-off events. [2023-08-30 09:49:08,313 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:49:08,314 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. [2023-08-30 09:49:08,316 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 31 selfloop transitions, 3 changer transitions 1/39 dead transitions. [2023-08-30 09:49:08,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 151 flow [2023-08-30 09:49:08,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-08-30 09:49:08,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-30 09:49:08,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-08-30 09:49:08,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-08-30 09:49:08,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:08,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-08-30 09:49:08,338 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) [2023-08-30 09:49:08,342 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) [2023-08-30 09:49:08,343 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) [2023-08-30 09:49:08,344 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 65 flow. Second operand 3 states and 340 transitions. [2023-08-30 09:49:08,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 151 flow [2023-08-30 09:49:08,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:08,348 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 88 flow [2023-08-30 09:49:08,350 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} [2023-08-30 09:49:08,352 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-30 09:49:08,353 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 88 flow [2023-08-30 09:49:08,353 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) [2023-08-30 09:49:08,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:08,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:08,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:49:08,354 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)] === [2023-08-30 09:49:08,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:08,354 INFO L85 PathProgramCache]: Analyzing trace with hash 840618020, now seen corresponding path program 1 times [2023-08-30 09:49:08,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:08,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026975448] [2023-08-30 09:49:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:08,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:08,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:08,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026975448] [2023-08-30 09:49:08,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026975448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:08,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:08,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:49:08,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919408148] [2023-08-30 09:49:08,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:08,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:08,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:08,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:08,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-08-30 09:49:08,433 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) [2023-08-30 09:49:08,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:08,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-08-30 09:49:08,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:08,535 INFO L130 PetriNetUnfolder]: 144/280 cut-off events. [2023-08-30 09:49:08,535 INFO L131 PetriNetUnfolder]: For 44/51 co-relation queries the response was YES. [2023-08-30 09:49:08,539 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. [2023-08-30 09:49:08,543 INFO L137 encePairwiseOnDemand]: 217/221 looper letters, 38 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-30 09:49:08,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 212 flow [2023-08-30 09:49:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-08-30 09:49:08,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526395173453997 [2023-08-30 09:49:08,549 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-08-30 09:49:08,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-08-30 09:49:08,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:08,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-08-30 09:49:08,551 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) [2023-08-30 09:49:08,552 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) [2023-08-30 09:49:08,552 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) [2023-08-30 09:49:08,553 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 88 flow. Second operand 3 states and 349 transitions. [2023-08-30 09:49:08,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 212 flow [2023-08-30 09:49:08,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:08,555 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 96 flow [2023-08-30 09:49:08,556 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} [2023-08-30 09:49:08,556 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-30 09:49:08,557 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 96 flow [2023-08-30 09:49:08,557 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) [2023-08-30 09:49:08,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:08,558 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:08,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:49:08,559 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)] === [2023-08-30 09:49:08,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:08,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1102290696, now seen corresponding path program 1 times [2023-08-30 09:49:08,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:08,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016234865] [2023-08-30 09:49:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:08,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 09:49:08,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:08,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016234865] [2023-08-30 09:49:08,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016234865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:08,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:08,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:49:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888919989] [2023-08-30 09:49:08,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:08,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:08,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:08,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:08,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 221 [2023-08-30 09:49:08,672 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) [2023-08-30 09:49:08,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:08,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 221 [2023-08-30 09:49:08,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:08,782 INFO L130 PetriNetUnfolder]: 270/530 cut-off events. [2023-08-30 09:49:08,783 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 09:49:08,785 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. [2023-08-30 09:49:08,788 INFO L137 encePairwiseOnDemand]: 209/221 looper letters, 38 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-08-30 09:49:08,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 52 transitions, 247 flow [2023-08-30 09:49:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-08-30 09:49:08,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143288084464555 [2023-08-30 09:49:08,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-08-30 09:49:08,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-08-30 09:49:08,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:08,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-08-30 09:49:08,792 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) [2023-08-30 09:49:08,796 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) [2023-08-30 09:49:08,796 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) [2023-08-30 09:49:08,797 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 96 flow. Second operand 3 states and 341 transitions. [2023-08-30 09:49:08,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 52 transitions, 247 flow [2023-08-30 09:49:08,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:08,800 INFO L231 Difference]: Finished difference. Result has 35 places, 40 transitions, 178 flow [2023-08-30 09:49:08,800 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} [2023-08-30 09:49:08,801 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-08-30 09:49:08,802 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 40 transitions, 178 flow [2023-08-30 09:49:08,802 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) [2023-08-30 09:49:08,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:08,803 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:08,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 09:49:08,804 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)] === [2023-08-30 09:49:08,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1102290751, now seen corresponding path program 1 times [2023-08-30 09:49:08,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:08,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559781801] [2023-08-30 09:49:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:08,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:08,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:08,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559781801] [2023-08-30 09:49:08,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559781801] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:08,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25931795] [2023-08-30 09:49:08,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:08,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:08,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:08,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:08,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 09:49:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:49:09,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:09,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:49:09,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25931795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:09,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:49:09,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 09:49:09,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187924439] [2023-08-30 09:49:09,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:09,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:49:09,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:09,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:49:09,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:09,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 221 [2023-08-30 09:49:09,147 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) [2023-08-30 09:49:09,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:09,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 221 [2023-08-30 09:49:09,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:09,287 INFO L130 PetriNetUnfolder]: 309/614 cut-off events. [2023-08-30 09:49:09,287 INFO L131 PetriNetUnfolder]: For 409/415 co-relation queries the response was YES. [2023-08-30 09:49:09,289 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. [2023-08-30 09:49:09,291 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 50 selfloop transitions, 19 changer transitions 0/75 dead transitions. [2023-08-30 09:49:09,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 75 transitions, 452 flow [2023-08-30 09:49:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:49:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:49:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 520 transitions. [2023-08-30 09:49:09,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2023-08-30 09:49:09,294 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 520 transitions. [2023-08-30 09:49:09,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 520 transitions. [2023-08-30 09:49:09,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:09,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 520 transitions. [2023-08-30 09:49:09,296 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) [2023-08-30 09:49:09,298 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) [2023-08-30 09:49:09,299 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) [2023-08-30 09:49:09,299 INFO L175 Difference]: Start difference. First operand has 35 places, 40 transitions, 178 flow. Second operand 5 states and 520 transitions. [2023-08-30 09:49:09,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 75 transitions, 452 flow [2023-08-30 09:49:09,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 75 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:09,303 INFO L231 Difference]: Finished difference. Result has 40 places, 51 transitions, 292 flow [2023-08-30 09:49:09,303 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} [2023-08-30 09:49:09,304 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2023-08-30 09:49:09,304 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 51 transitions, 292 flow [2023-08-30 09:49:09,305 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) [2023-08-30 09:49:09,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:09,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:09,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 09:49:09,510 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 [2023-08-30 09:49:09,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:09,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:09,511 INFO L85 PathProgramCache]: Analyzing trace with hash -95520777, now seen corresponding path program 1 times [2023-08-30 09:49:09,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:09,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739824295] [2023-08-30 09:49:09,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:09,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:09,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:09,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739824295] [2023-08-30 09:49:09,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739824295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:09,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:09,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:49:09,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374795748] [2023-08-30 09:49:09,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:09,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:09,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:09,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 221 [2023-08-30 09:49:09,612 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) [2023-08-30 09:49:09,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:09,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 221 [2023-08-30 09:49:09,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:09,691 INFO L130 PetriNetUnfolder]: 123/288 cut-off events. [2023-08-30 09:49:09,691 INFO L131 PetriNetUnfolder]: For 230/230 co-relation queries the response was YES. [2023-08-30 09:49:09,692 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. [2023-08-30 09:49:09,693 INFO L137 encePairwiseOnDemand]: 216/221 looper letters, 33 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2023-08-30 09:49:09,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 311 flow [2023-08-30 09:49:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-08-30 09:49:09,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49321266968325794 [2023-08-30 09:49:09,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-08-30 09:49:09,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-08-30 09:49:09,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:09,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-08-30 09:49:09,698 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) [2023-08-30 09:49:09,699 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) [2023-08-30 09:49:09,700 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) [2023-08-30 09:49:09,700 INFO L175 Difference]: Start difference. First operand has 40 places, 51 transitions, 292 flow. Second operand 3 states and 327 transitions. [2023-08-30 09:49:09,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 311 flow [2023-08-30 09:49:09,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 292 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:09,704 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 202 flow [2023-08-30 09:49:09,705 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} [2023-08-30 09:49:09,707 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-08-30 09:49:09,708 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 202 flow [2023-08-30 09:49:09,708 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) [2023-08-30 09:49:09,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:09,708 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:09,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 09:49:09,709 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)] === [2023-08-30 09:49:09,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:09,709 INFO L85 PathProgramCache]: Analyzing trace with hash 188723371, now seen corresponding path program 1 times [2023-08-30 09:49:09,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:09,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878436400] [2023-08-30 09:49:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:09,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:09,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:09,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878436400] [2023-08-30 09:49:09,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878436400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:09,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651016408] [2023-08-30 09:49:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:09,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:09,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:09,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:09,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 09:49:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:09,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:49:09,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:09,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:09,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651016408] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:09,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:09,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 09:49:09,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46587403] [2023-08-30 09:49:09,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:09,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 09:49:09,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 09:49:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 09:49:10,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 221 [2023-08-30 09:49:10,059 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) [2023-08-30 09:49:10,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:10,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 221 [2023-08-30 09:49:10,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:10,237 INFO L130 PetriNetUnfolder]: 220/445 cut-off events. [2023-08-30 09:49:10,237 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2023-08-30 09:49:10,238 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. [2023-08-30 09:49:10,240 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 60 selfloop transitions, 24 changer transitions 4/90 dead transitions. [2023-08-30 09:49:10,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 90 transitions, 570 flow [2023-08-30 09:49:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:49:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:49:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 903 transitions. [2023-08-30 09:49:10,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539969834087481 [2023-08-30 09:49:10,243 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 903 transitions. [2023-08-30 09:49:10,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 903 transitions. [2023-08-30 09:49:10,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:10,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 903 transitions. [2023-08-30 09:49:10,246 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) [2023-08-30 09:49:10,249 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) [2023-08-30 09:49:10,250 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) [2023-08-30 09:49:10,250 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 202 flow. Second operand 9 states and 903 transitions. [2023-08-30 09:49:10,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 90 transitions, 570 flow [2023-08-30 09:49:10,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 90 transitions, 549 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:10,253 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 346 flow [2023-08-30 09:49:10,253 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} [2023-08-30 09:49:10,254 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2023-08-30 09:49:10,254 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 346 flow [2023-08-30 09:49:10,255 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) [2023-08-30 09:49:10,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:10,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:10,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:10,460 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 [2023-08-30 09:49:10,461 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:10,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:10,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1678997361, now seen corresponding path program 1 times [2023-08-30 09:49:10,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:10,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52404863] [2023-08-30 09:49:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:10,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:10,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:10,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52404863] [2023-08-30 09:49:10,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52404863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:10,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:10,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:49:10,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758862563] [2023-08-30 09:49:10,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:10,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:49:10,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:49:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:49:10,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 221 [2023-08-30 09:49:10,529 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) [2023-08-30 09:49:10,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:10,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 221 [2023-08-30 09:49:10,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:10,596 INFO L130 PetriNetUnfolder]: 159/349 cut-off events. [2023-08-30 09:49:10,596 INFO L131 PetriNetUnfolder]: For 552/552 co-relation queries the response was YES. [2023-08-30 09:49:10,597 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. [2023-08-30 09:49:10,599 INFO L137 encePairwiseOnDemand]: 214/221 looper letters, 44 selfloop transitions, 8 changer transitions 1/55 dead transitions. [2023-08-30 09:49:10,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 453 flow [2023-08-30 09:49:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:49:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:49:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-30 09:49:10,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947209653092006 [2023-08-30 09:49:10,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-30 09:49:10,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-30 09:49:10,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:10,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-30 09:49:10,602 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) [2023-08-30 09:49:10,604 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) [2023-08-30 09:49:10,604 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) [2023-08-30 09:49:10,604 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 346 flow. Second operand 3 states and 328 transitions. [2023-08-30 09:49:10,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 453 flow [2023-08-30 09:49:10,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 442 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:10,607 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 331 flow [2023-08-30 09:49:10,608 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} [2023-08-30 09:49:10,608 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-08-30 09:49:10,608 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 331 flow [2023-08-30 09:49:10,609 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) [2023-08-30 09:49:10,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:10,609 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:49:10,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 09:49:10,609 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)] === [2023-08-30 09:49:10,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:10,610 INFO L85 PathProgramCache]: Analyzing trace with hash 976583335, now seen corresponding path program 1 times [2023-08-30 09:49:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:10,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590558913] [2023-08-30 09:49:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:10,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:10,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:10,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590558913] [2023-08-30 09:49:10,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590558913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:10,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101767465] [2023-08-30 09:49:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:10,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:10,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:10,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:10,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 09:49:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:10,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:49:10,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:10,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:10,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101767465] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:10,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:10,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 09:49:10,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17757693] [2023-08-30 09:49:10,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:10,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:10,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:10,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:10,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:10,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-08-30 09:49:10,804 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) [2023-08-30 09:49:10,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:10,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-08-30 09:49:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:10,956 INFO L130 PetriNetUnfolder]: 233/550 cut-off events. [2023-08-30 09:49:10,956 INFO L131 PetriNetUnfolder]: For 1213/1221 co-relation queries the response was YES. [2023-08-30 09:49:10,958 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. [2023-08-30 09:49:10,961 INFO L137 encePairwiseOnDemand]: 217/221 looper letters, 111 selfloop transitions, 9 changer transitions 3/132 dead transitions. [2023-08-30 09:49:10,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 132 transitions, 1178 flow [2023-08-30 09:49:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:49:10,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:49:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 812 transitions. [2023-08-30 09:49:10,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248868778280543 [2023-08-30 09:49:10,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 812 transitions. [2023-08-30 09:49:10,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 812 transitions. [2023-08-30 09:49:10,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:10,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 812 transitions. [2023-08-30 09:49:10,967 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) [2023-08-30 09:49:10,969 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) [2023-08-30 09:49:10,970 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) [2023-08-30 09:49:10,970 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 331 flow. Second operand 7 states and 812 transitions. [2023-08-30 09:49:10,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 132 transitions, 1178 flow [2023-08-30 09:49:10,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 132 transitions, 1110 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:10,975 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 364 flow [2023-08-30 09:49:10,975 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} [2023-08-30 09:49:10,976 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-08-30 09:49:10,976 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 364 flow [2023-08-30 09:49:10,976 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) [2023-08-30 09:49:10,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:10,976 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:49:10,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:11,182 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 [2023-08-30 09:49:11,183 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)] === [2023-08-30 09:49:11,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash 976583330, now seen corresponding path program 1 times [2023-08-30 09:49:11,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:11,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319984614] [2023-08-30 09:49:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:11,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:11,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:11,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319984614] [2023-08-30 09:49:11,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319984614] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:11,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843733314] [2023-08-30 09:49:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:11,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:11,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:11,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:11,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 09:49:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:11,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 09:49:11,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:11,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:49:11,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843733314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:11,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:49:11,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 09:49:11,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143553235] [2023-08-30 09:49:11,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:11,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:49:11,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:11,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:49:11,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:11,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-08-30 09:49:11,340 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) [2023-08-30 09:49:11,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:11,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-08-30 09:49:11,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:11,445 INFO L130 PetriNetUnfolder]: 178/475 cut-off events. [2023-08-30 09:49:11,445 INFO L131 PetriNetUnfolder]: For 1335/1343 co-relation queries the response was YES. [2023-08-30 09:49:11,447 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. [2023-08-30 09:49:11,449 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 44 selfloop transitions, 2 changer transitions 6/60 dead transitions. [2023-08-30 09:49:11,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 503 flow [2023-08-30 09:49:11,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:49:11,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:49:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2023-08-30 09:49:11,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505656108597285 [2023-08-30 09:49:11,451 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2023-08-30 09:49:11,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2023-08-30 09:49:11,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:11,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2023-08-30 09:49:11,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:49:11,454 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) [2023-08-30 09:49:11,457 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) [2023-08-30 09:49:11,457 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 364 flow. Second operand 4 states and 447 transitions. [2023-08-30 09:49:11,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 503 flow [2023-08-30 09:49:11,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 495 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:11,462 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 326 flow [2023-08-30 09:49:11,462 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} [2023-08-30 09:49:11,463 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-08-30 09:49:11,463 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 326 flow [2023-08-30 09:49:11,464 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) [2023-08-30 09:49:11,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:11,464 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:11,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:11,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:11,670 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)] === [2023-08-30 09:49:11,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1231779423, now seen corresponding path program 1 times [2023-08-30 09:49:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:11,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425060138] [2023-08-30 09:49:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:11,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:11,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:11,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425060138] [2023-08-30 09:49:11,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425060138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:11,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:11,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 09:49:11,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794717374] [2023-08-30 09:49:11,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:11,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:49:11,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:11,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:49:11,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:49:11,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-30 09:49:11,756 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) [2023-08-30 09:49:11,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:11,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-30 09:49:11,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:11,885 INFO L130 PetriNetUnfolder]: 245/577 cut-off events. [2023-08-30 09:49:11,886 INFO L131 PetriNetUnfolder]: For 1298/1298 co-relation queries the response was YES. [2023-08-30 09:49:11,887 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. [2023-08-30 09:49:11,889 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 58 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2023-08-30 09:49:11,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 633 flow [2023-08-30 09:49:11,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:49:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:49:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 507 transitions. [2023-08-30 09:49:11,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2023-08-30 09:49:11,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 507 transitions. [2023-08-30 09:49:11,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 507 transitions. [2023-08-30 09:49:11,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:11,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 507 transitions. [2023-08-30 09:49:11,894 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) [2023-08-30 09:49:11,895 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) [2023-08-30 09:49:11,896 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) [2023-08-30 09:49:11,896 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 326 flow. Second operand 5 states and 507 transitions. [2023-08-30 09:49:11,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 633 flow [2023-08-30 09:49:11,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 607 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 09:49:11,900 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 323 flow [2023-08-30 09:49:11,901 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} [2023-08-30 09:49:11,902 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-08-30 09:49:11,902 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 323 flow [2023-08-30 09:49:11,902 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) [2023-08-30 09:49:11,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:11,903 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:11,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 09:49:11,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:11,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1895118489, now seen corresponding path program 1 times [2023-08-30 09:49:11,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:11,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42583857] [2023-08-30 09:49:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:11,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:11,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42583857] [2023-08-30 09:49:11,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42583857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:49:11,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:49:11,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:49:11,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72031393] [2023-08-30 09:49:11,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:49:11,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:49:11,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:49:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:49:12,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 221 [2023-08-30 09:49:12,038 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) [2023-08-30 09:49:12,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:12,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 221 [2023-08-30 09:49:12,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:12,185 INFO L130 PetriNetUnfolder]: 225/532 cut-off events. [2023-08-30 09:49:12,185 INFO L131 PetriNetUnfolder]: For 1267/1267 co-relation queries the response was YES. [2023-08-30 09:49:12,186 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. [2023-08-30 09:49:12,189 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 50 selfloop transitions, 10 changer transitions 16/78 dead transitions. [2023-08-30 09:49:12,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 647 flow [2023-08-30 09:49:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:49:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:49:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 666 transitions. [2023-08-30 09:49:12,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305106658047835 [2023-08-30 09:49:12,208 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 666 transitions. [2023-08-30 09:49:12,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 666 transitions. [2023-08-30 09:49:12,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:12,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 666 transitions. [2023-08-30 09:49:12,211 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) [2023-08-30 09:49:12,213 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) [2023-08-30 09:49:12,214 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) [2023-08-30 09:49:12,214 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 323 flow. Second operand 7 states and 666 transitions. [2023-08-30 09:49:12,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 647 flow [2023-08-30 09:49:12,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 641 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:49:12,219 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 368 flow [2023-08-30 09:49:12,219 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} [2023-08-30 09:49:12,220 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-08-30 09:49:12,220 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 368 flow [2023-08-30 09:49:12,220 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) [2023-08-30 09:49:12,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:12,221 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:12,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 09:49:12,221 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 09:49:12,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash -801990731, now seen corresponding path program 1 times [2023-08-30 09:49:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856061406] [2023-08-30 09:49:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:12,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:12,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:12,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856061406] [2023-08-30 09:49:12,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856061406] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:12,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794187396] [2023-08-30 09:49:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:12,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:12,351 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:12,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 09:49:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:12,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:49:12,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:12,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794187396] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:12,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:12,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 09:49:12,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881242546] [2023-08-30 09:49:12,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:12,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 09:49:12,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:12,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 09:49:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 09:49:12,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-08-30 09:49:12,678 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) [2023-08-30 09:49:12,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:12,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-08-30 09:49:12,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:12,890 INFO L130 PetriNetUnfolder]: 267/632 cut-off events. [2023-08-30 09:49:12,891 INFO L131 PetriNetUnfolder]: For 1853/1853 co-relation queries the response was YES. [2023-08-30 09:49:12,893 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. [2023-08-30 09:49:12,895 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 63 selfloop transitions, 25 changer transitions 17/107 dead transitions. [2023-08-30 09:49:12,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 908 flow [2023-08-30 09:49:12,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 09:49:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 09:49:12,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1437 transitions. [2023-08-30 09:49:12,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334841628959276 [2023-08-30 09:49:12,900 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1437 transitions. [2023-08-30 09:49:12,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1437 transitions. [2023-08-30 09:49:12,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:12,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1437 transitions. [2023-08-30 09:49:12,904 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) [2023-08-30 09:49:12,909 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) [2023-08-30 09:49:12,911 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) [2023-08-30 09:49:12,911 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 368 flow. Second operand 15 states and 1437 transitions. [2023-08-30 09:49:12,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 908 flow [2023-08-30 09:49:12,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 902 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:49:12,918 INFO L231 Difference]: Finished difference. Result has 76 places, 54 transitions, 496 flow [2023-08-30 09:49:12,918 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} [2023-08-30 09:49:12,919 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2023-08-30 09:49:12,919 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 496 flow [2023-08-30 09:49:12,919 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) [2023-08-30 09:49:12,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:12,920 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2023-08-30 09:49:12,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:13,126 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 [2023-08-30 09:49:13,126 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)] === [2023-08-30 09:49:13,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:13,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1155858341, now seen corresponding path program 2 times [2023-08-30 09:49:13,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:13,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647665304] [2023-08-30 09:49:13,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:13,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:13,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:13,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647665304] [2023-08-30 09:49:13,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647665304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:13,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540379415] [2023-08-30 09:49:13,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:49:13,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:13,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:13,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:13,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 09:49:13,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:49:13,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:13,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 09:49:13,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:13,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:13,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540379415] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:13,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:13,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 25 [2023-08-30 09:49:13,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976643258] [2023-08-30 09:49:13,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:13,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 09:49:13,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 09:49:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2023-08-30 09:49:13,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 221 [2023-08-30 09:49:13,791 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) [2023-08-30 09:49:13,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:13,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 221 [2023-08-30 09:49:13,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:14,370 INFO L130 PetriNetUnfolder]: 272/701 cut-off events. [2023-08-30 09:49:14,371 INFO L131 PetriNetUnfolder]: For 3294/3294 co-relation queries the response was YES. [2023-08-30 09:49:14,373 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. [2023-08-30 09:49:14,377 INFO L137 encePairwiseOnDemand]: 211/221 looper letters, 172 selfloop transitions, 67 changer transitions 38/279 dead transitions. [2023-08-30 09:49:14,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 279 transitions, 2736 flow [2023-08-30 09:49:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-30 09:49:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-30 09:49:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3578 transitions. [2023-08-30 09:49:14,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4260538223386521 [2023-08-30 09:49:14,390 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3578 transitions. [2023-08-30 09:49:14,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3578 transitions. [2023-08-30 09:49:14,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:14,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3578 transitions. [2023-08-30 09:49:14,402 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) [2023-08-30 09:49:14,414 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) [2023-08-30 09:49:14,416 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) [2023-08-30 09:49:14,417 INFO L175 Difference]: Start difference. First operand has 76 places, 54 transitions, 496 flow. Second operand 38 states and 3578 transitions. [2023-08-30 09:49:14,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 279 transitions, 2736 flow [2023-08-30 09:49:14,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 279 transitions, 2612 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-08-30 09:49:14,429 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 1202 flow [2023-08-30 09:49:14,430 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} [2023-08-30 09:49:14,431 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2023-08-30 09:49:14,431 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 1202 flow [2023-08-30 09:49:14,432 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) [2023-08-30 09:49:14,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:14,432 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:14,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:14,638 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 [2023-08-30 09:49:14,639 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)] === [2023-08-30 09:49:14,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:14,639 INFO L85 PathProgramCache]: Analyzing trace with hash 907417041, now seen corresponding path program 1 times [2023-08-30 09:49:14,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:14,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357007476] [2023-08-30 09:49:14,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:14,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:14,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:14,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357007476] [2023-08-30 09:49:14,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357007476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483307140] [2023-08-30 09:49:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:14,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:14,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:14,786 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:14,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 09:49:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:14,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 09:49:14,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-30 09:49:14,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-30 09:49:15,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483307140] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:15,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:15,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16 [2023-08-30 09:49:15,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539745572] [2023-08-30 09:49:15,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:15,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 09:49:15,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 09:49:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-08-30 09:49:15,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 09:49:15,181 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) [2023-08-30 09:49:15,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:15,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 09:49:15,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:16,266 INFO L130 PetriNetUnfolder]: 402/1097 cut-off events. [2023-08-30 09:49:16,266 INFO L131 PetriNetUnfolder]: For 10910/10910 co-relation queries the response was YES. [2023-08-30 09:49:16,271 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. [2023-08-30 09:49:16,277 INFO L137 encePairwiseOnDemand]: 209/221 looper letters, 244 selfloop transitions, 159 changer transitions 20/425 dead transitions. [2023-08-30 09:49:16,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 425 transitions, 4622 flow [2023-08-30 09:49:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-08-30 09:49:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-08-30 09:49:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6108 transitions. [2023-08-30 09:49:16,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40055085579382255 [2023-08-30 09:49:16,288 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6108 transitions. [2023-08-30 09:49:16,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6108 transitions. [2023-08-30 09:49:16,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:16,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6108 transitions. [2023-08-30 09:49:16,300 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) [2023-08-30 09:49:16,326 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) [2023-08-30 09:49:16,332 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) [2023-08-30 09:49:16,332 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 1202 flow. Second operand 69 states and 6108 transitions. [2023-08-30 09:49:16,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 425 transitions, 4622 flow [2023-08-30 09:49:16,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 425 transitions, 4316 flow, removed 85 selfloop flow, removed 16 redundant places. [2023-08-30 09:49:16,367 INFO L231 Difference]: Finished difference. Result has 192 places, 228 transitions, 2968 flow [2023-08-30 09:49:16,367 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} [2023-08-30 09:49:16,368 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2023-08-30 09:49:16,368 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 228 transitions, 2968 flow [2023-08-30 09:49:16,369 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) [2023-08-30 09:49:16,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:16,369 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:16,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:16,575 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 [2023-08-30 09:49:16,575 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)] === [2023-08-30 09:49:16,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:16,575 INFO L85 PathProgramCache]: Analyzing trace with hash 97901477, now seen corresponding path program 2 times [2023-08-30 09:49:16,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:16,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103635446] [2023-08-30 09:49:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:16,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:16,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103635446] [2023-08-30 09:49:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103635446] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316151404] [2023-08-30 09:49:16,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:49:16,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:16,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:16,753 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:16,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 09:49:16,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:49:16,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:16,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 09:49:16,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-30 09:49:16,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-30 09:49:17,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316151404] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:17,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:17,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-08-30 09:49:17,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905440474] [2023-08-30 09:49:17,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:17,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 09:49:17,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:17,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 09:49:17,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-08-30 09:49:17,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 09:49:17,327 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) [2023-08-30 09:49:17,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:17,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 09:49:17,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:19,428 INFO L130 PetriNetUnfolder]: 747/2044 cut-off events. [2023-08-30 09:49:19,428 INFO L131 PetriNetUnfolder]: For 52489/52489 co-relation queries the response was YES. [2023-08-30 09:49:19,441 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. [2023-08-30 09:49:19,455 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 266 selfloop transitions, 392 changer transitions 26/686 dead transitions. [2023-08-30 09:49:19,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 686 transitions, 9338 flow [2023-08-30 09:49:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-08-30 09:49:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-08-30 09:49:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 8502 transitions. [2023-08-30 09:49:19,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39660400242571253 [2023-08-30 09:49:19,476 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 8502 transitions. [2023-08-30 09:49:19,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 8502 transitions. [2023-08-30 09:49:19,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:19,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 8502 transitions. [2023-08-30 09:49:19,496 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) [2023-08-30 09:49:19,529 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) [2023-08-30 09:49:19,536 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) [2023-08-30 09:49:19,537 INFO L175 Difference]: Start difference. First operand has 192 places, 228 transitions, 2968 flow. Second operand 97 states and 8502 transitions. [2023-08-30 09:49:19,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 686 transitions, 9338 flow [2023-08-30 09:49:19,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 686 transitions, 8639 flow, removed 271 selfloop flow, removed 13 redundant places. [2023-08-30 09:49:19,654 INFO L231 Difference]: Finished difference. Result has 298 places, 432 transitions, 6113 flow [2023-08-30 09:49:19,655 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} [2023-08-30 09:49:19,656 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 269 predicate places. [2023-08-30 09:49:19,656 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 432 transitions, 6113 flow [2023-08-30 09:49:19,656 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) [2023-08-30 09:49:19,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:19,657 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 7, 1, 1, 1, 1] [2023-08-30 09:49:19,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:19,862 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 [2023-08-30 09:49:19,863 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)] === [2023-08-30 09:49:19,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2098528539, now seen corresponding path program 2 times [2023-08-30 09:49:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:19,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480258511] [2023-08-30 09:49:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:20,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480258511] [2023-08-30 09:49:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480258511] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:20,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633720725] [2023-08-30 09:49:20,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:49:20,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:20,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:20,081 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:20,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 09:49:20,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:49:20,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:20,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 09:49:20,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:20,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:20,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633720725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:20,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:20,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-30 09:49:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252484594] [2023-08-30 09:49:20,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:20,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 09:49:20,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:20,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 09:49:20,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2023-08-30 09:49:20,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-08-30 09:49:20,444 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) [2023-08-30 09:49:20,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:20,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-08-30 09:49:20,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:22,084 INFO L130 PetriNetUnfolder]: 1391/4351 cut-off events. [2023-08-30 09:49:22,084 INFO L131 PetriNetUnfolder]: For 436607/436616 co-relation queries the response was YES. [2023-08-30 09:49:22,130 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. [2023-08-30 09:49:22,157 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 830 selfloop transitions, 116 changer transitions 29/995 dead transitions. [2023-08-30 09:49:22,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 995 transitions, 16521 flow [2023-08-30 09:49:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 09:49:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 09:49:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2060 transitions. [2023-08-30 09:49:22,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178481649069885 [2023-08-30 09:49:22,161 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2060 transitions. [2023-08-30 09:49:22,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2060 transitions. [2023-08-30 09:49:22,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:22,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2060 transitions. [2023-08-30 09:49:22,164 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) [2023-08-30 09:49:22,169 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) [2023-08-30 09:49:22,170 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) [2023-08-30 09:49:22,170 INFO L175 Difference]: Start difference. First operand has 298 places, 432 transitions, 6113 flow. Second operand 18 states and 2060 transitions. [2023-08-30 09:49:22,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 995 transitions, 16521 flow [2023-08-30 09:49:22,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 995 transitions, 15516 flow, removed 278 selfloop flow, removed 22 redundant places. [2023-08-30 09:49:22,449 INFO L231 Difference]: Finished difference. Result has 301 places, 440 transitions, 6228 flow [2023-08-30 09:49:22,450 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} [2023-08-30 09:49:22,450 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 272 predicate places. [2023-08-30 09:49:22,450 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 440 transitions, 6228 flow [2023-08-30 09:49:22,451 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) [2023-08-30 09:49:22,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:22,451 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 16, 12, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:22,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 09:49:22,657 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 [2023-08-30 09:49:22,658 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)] === [2023-08-30 09:49:22,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash -743466793, now seen corresponding path program 3 times [2023-08-30 09:49:22,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:22,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290420233] [2023-08-30 09:49:22,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:22,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:23,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:23,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290420233] [2023-08-30 09:49:23,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290420233] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:23,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367010210] [2023-08-30 09:49:23,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:49:23,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:23,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:23,161 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:23,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 09:49:23,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-30 09:49:23,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:23,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 09:49:23,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 32 proven. 262 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-30 09:49:23,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 32 proven. 262 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-30 09:49:23,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367010210] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:23,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:23,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 39 [2023-08-30 09:49:23,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504002830] [2023-08-30 09:49:23,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:23,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-30 09:49:23,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-30 09:49:23,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1197, Unknown=0, NotChecked=0, Total=1482 [2023-08-30 09:49:24,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 09:49:24,051 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) [2023-08-30 09:49:24,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:24,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 09:49:24,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:35,736 INFO L130 PetriNetUnfolder]: 2894/7957 cut-off events. [2023-08-30 09:49:35,737 INFO L131 PetriNetUnfolder]: For 673877/673877 co-relation queries the response was YES. [2023-08-30 09:49:35,797 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. [2023-08-30 09:49:35,863 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 1320 selfloop transitions, 1307 changer transitions 259/2888 dead transitions. [2023-08-30 09:49:35,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 2888 transitions, 47332 flow [2023-08-30 09:49:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 413 states. [2023-08-30 09:49:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2023-08-30 09:49:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 36435 transitions. [2023-08-30 09:49:35,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39918705422194956 [2023-08-30 09:49:35,900 INFO L72 ComplementDD]: Start complementDD. Operand 413 states and 36435 transitions. [2023-08-30 09:49:35,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 413 states and 36435 transitions. [2023-08-30 09:49:35,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:35,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 413 states and 36435 transitions. [2023-08-30 09:49:35,953 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) [2023-08-30 09:49:36,030 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) [2023-08-30 09:49:36,048 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) [2023-08-30 09:49:36,048 INFO L175 Difference]: Start difference. First operand has 301 places, 440 transitions, 6228 flow. Second operand 413 states and 36435 transitions. [2023-08-30 09:49:36,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 2888 transitions, 47332 flow [2023-08-30 09:49:36,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 2888 transitions, 41999 flow, removed 2142 selfloop flow, removed 9 redundant places. [2023-08-30 09:49:36,862 INFO L231 Difference]: Finished difference. Result has 833 places, 1409 transitions, 25608 flow [2023-08-30 09:49:36,863 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} [2023-08-30 09:49:36,864 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 804 predicate places. [2023-08-30 09:49:36,864 INFO L495 AbstractCegarLoop]: Abstraction has has 833 places, 1409 transitions, 25608 flow [2023-08-30 09:49:36,865 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) [2023-08-30 09:49:36,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:36,865 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 17, 9, 9, 9, 9, 1, 1, 1, 1] [2023-08-30 09:49:36,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:37,070 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 [2023-08-30 09:49:37,071 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)] === [2023-08-30 09:49:37,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1894708907, now seen corresponding path program 3 times [2023-08-30 09:49:37,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:37,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846528630] [2023-08-30 09:49:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:37,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:37,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846528630] [2023-08-30 09:49:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846528630] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683292130] [2023-08-30 09:49:37,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:49:37,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:37,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:37,530 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:37,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 09:49:37,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-08-30 09:49:37,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:37,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 09:49:37,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 34 proven. 506 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-08-30 09:49:38,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 34 proven. 506 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-08-30 09:49:38,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683292130] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:38,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:38,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 58 [2023-08-30 09:49:38,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044392534] [2023-08-30 09:49:38,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:38,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-30 09:49:38,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-30 09:49:38,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=2697, Unknown=0, NotChecked=0, Total=3306 [2023-08-30 09:49:38,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 221 [2023-08-30 09:49:38,948 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) [2023-08-30 09:49:38,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:38,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 221 [2023-08-30 09:49:38,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:49:45,831 INFO L130 PetriNetUnfolder]: 2719/8152 cut-off events. [2023-08-30 09:49:45,831 INFO L131 PetriNetUnfolder]: For 913008/913008 co-relation queries the response was YES. [2023-08-30 09:49:45,942 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. [2023-08-30 09:49:45,987 INFO L137 encePairwiseOnDemand]: 211/221 looper letters, 1191 selfloop transitions, 823 changer transitions 84/2100 dead transitions. [2023-08-30 09:49:45,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 2100 transitions, 42959 flow [2023-08-30 09:49:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-08-30 09:49:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2023-08-30 09:49:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 9678 transitions. [2023-08-30 09:49:45,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42516364275359136 [2023-08-30 09:49:45,997 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 9678 transitions. [2023-08-30 09:49:45,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 9678 transitions. [2023-08-30 09:49:46,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:49:46,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 9678 transitions. [2023-08-30 09:49:46,010 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) [2023-08-30 09:49:46,027 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) [2023-08-30 09:49:46,032 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) [2023-08-30 09:49:46,032 INFO L175 Difference]: Start difference. First operand has 833 places, 1409 transitions, 25608 flow. Second operand 103 states and 9678 transitions. [2023-08-30 09:49:46,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 2100 transitions, 42959 flow [2023-08-30 09:49:49,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 2100 transitions, 37956 flow, removed 1890 selfloop flow, removed 62 redundant places. [2023-08-30 09:49:49,578 INFO L231 Difference]: Finished difference. Result has 897 places, 1566 transitions, 27217 flow [2023-08-30 09:49:49,579 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} [2023-08-30 09:49:49,580 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 868 predicate places. [2023-08-30 09:49:49,580 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 1566 transitions, 27217 flow [2023-08-30 09:49:49,581 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) [2023-08-30 09:49:49,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:49:49,581 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 12, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:49:49,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 09:49:49,781 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 [2023-08-30 09:49:49,781 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)] === [2023-08-30 09:49:49,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:49:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash -987967957, now seen corresponding path program 4 times [2023-08-30 09:49:49,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:49:49,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998721272] [2023-08-30 09:49:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:49:49,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:49:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:49:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:49:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:49:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998721272] [2023-08-30 09:49:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998721272] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:49:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072361875] [2023-08-30 09:49:50,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 09:49:50,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:49:50,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:49:50,345 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:49:50,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 09:49:50,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 09:49:50,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:49:50,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 09:49:50,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:49:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 344 proven. 134 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-08-30 09:49:50,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:49:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 344 proven. 134 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-08-30 09:49:51,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072361875] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:49:51,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:49:51,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 49 [2023-08-30 09:49:51,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376220750] [2023-08-30 09:49:51,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:49:51,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-30 09:49:51,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:49:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-30 09:49:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1928, Unknown=0, NotChecked=0, Total=2352 [2023-08-30 09:49:51,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 09:49:51,440 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) [2023-08-30 09:49:51,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:49:51,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 09:49:51,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:50:15,146 INFO L130 PetriNetUnfolder]: 4450/13490 cut-off events. [2023-08-30 09:50:15,146 INFO L131 PetriNetUnfolder]: For 2128769/2128769 co-relation queries the response was YES. [2023-08-30 09:50:15,362 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. [2023-08-30 09:50:15,431 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 1829 selfloop transitions, 2564 changer transitions 43/4438 dead transitions. [2023-08-30 09:50:15,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1420 places, 4438 transitions, 90382 flow [2023-08-30 09:50:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 535 states. [2023-08-30 09:50:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2023-08-30 09:50:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 47067 transitions. [2023-08-30 09:50:15,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980800947266038 [2023-08-30 09:50:15,473 INFO L72 ComplementDD]: Start complementDD. Operand 535 states and 47067 transitions. [2023-08-30 09:50:15,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 535 states and 47067 transitions. [2023-08-30 09:50:15,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:50:15,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 535 states and 47067 transitions. [2023-08-30 09:50:15,532 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) [2023-08-30 09:50:15,624 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) [2023-08-30 09:50:15,646 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) [2023-08-30 09:50:15,646 INFO L175 Difference]: Start difference. First operand has 897 places, 1566 transitions, 27217 flow. Second operand 535 states and 47067 transitions. [2023-08-30 09:50:15,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1420 places, 4438 transitions, 90382 flow [2023-08-30 09:50:22,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1387 places, 4438 transitions, 85604 flow, removed 2187 selfloop flow, removed 33 redundant places. [2023-08-30 09:50:22,973 INFO L231 Difference]: Finished difference. Result has 1572 places, 2785 transitions, 60663 flow [2023-08-30 09:50:22,975 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} [2023-08-30 09:50:22,975 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1543 predicate places. [2023-08-30 09:50:22,975 INFO L495 AbstractCegarLoop]: Abstraction has has 1572 places, 2785 transitions, 60663 flow [2023-08-30 09:50:22,976 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) [2023-08-30 09:50:22,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:50:22,976 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 19, 11, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:50:22,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 09:50:23,176 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 [2023-08-30 09:50:23,177 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)] === [2023-08-30 09:50:23,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:50:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash -416934563, now seen corresponding path program 5 times [2023-08-30 09:50:23,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:50:23,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349068273] [2023-08-30 09:50:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:50:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:50:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:50:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:50:23,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:50:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349068273] [2023-08-30 09:50:23,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349068273] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:50:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211384443] [2023-08-30 09:50:23,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 09:50:23,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:50:23,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:50:23,714 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:50:23,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 09:50:23,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-08-30 09:50:23,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:50:23,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 09:50:23,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:50:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 390 proven. 296 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-08-30 09:50:24,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:50:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 390 proven. 296 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-08-30 09:50:24,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211384443] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:50:24,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:50:24,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 58 [2023-08-30 09:50:24,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035445423] [2023-08-30 09:50:24,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:50:24,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-30 09:50:24,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:50:24,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-30 09:50:24,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=2729, Unknown=0, NotChecked=0, Total=3306 [2023-08-30 09:50:25,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 09:50:25,022 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) [2023-08-30 09:50:25,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:50:25,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 09:50:25,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:51:12,937 INFO L130 PetriNetUnfolder]: 6454/19587 cut-off events. [2023-08-30 09:51:12,937 INFO L131 PetriNetUnfolder]: For 8193269/8193269 co-relation queries the response was YES. [2023-08-30 09:51:14,010 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. [2023-08-30 09:51:14,107 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 2293 selfloop transitions, 3929 changer transitions 61/6285 dead transitions. [2023-08-30 09:51:14,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2253 places, 6285 transitions, 172618 flow [2023-08-30 09:51:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2023-08-30 09:51:14,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2023-08-30 09:51:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 60032 transitions. [2023-08-30 09:51:14,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977130439967405 [2023-08-30 09:51:14,154 INFO L72 ComplementDD]: Start complementDD. Operand 683 states and 60032 transitions. [2023-08-30 09:51:14,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 683 states and 60032 transitions. [2023-08-30 09:51:14,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:51:14,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 683 states and 60032 transitions. [2023-08-30 09:51:14,231 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) [2023-08-30 09:51:14,339 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) [2023-08-30 09:51:14,360 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) [2023-08-30 09:51:14,361 INFO L175 Difference]: Start difference. First operand has 1572 places, 2785 transitions, 60663 flow. Second operand 683 states and 60032 transitions. [2023-08-30 09:51:14,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2253 places, 6285 transitions, 172618 flow [2023-08-30 09:52:00,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2225 places, 6285 transitions, 158987 flow, removed 6654 selfloop flow, removed 28 redundant places. [2023-08-30 09:52:00,332 INFO L231 Difference]: Finished difference. Result has 2423 places, 4181 transitions, 112641 flow [2023-08-30 09:52:00,336 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} [2023-08-30 09:52:00,336 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2394 predicate places. [2023-08-30 09:52:00,336 INFO L495 AbstractCegarLoop]: Abstraction has has 2423 places, 4181 transitions, 112641 flow [2023-08-30 09:52:00,337 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) [2023-08-30 09:52:00,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:52:00,338 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 14, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:52:00,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 09:52:00,543 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 [2023-08-30 09:52:00,543 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)] === [2023-08-30 09:52:00,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:52:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1203149103, now seen corresponding path program 6 times [2023-08-30 09:52:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:52:00,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655805898] [2023-08-30 09:52:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:00,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:52:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:52:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 0 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:52:01,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:52:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655805898] [2023-08-30 09:52:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655805898] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:52:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828828909] [2023-08-30 09:52:01,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 09:52:01,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:52:01,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:52:01,050 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:52:01,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 09:52:01,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-08-30 09:52:01,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:52:01,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 09:52:01,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:52:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 40 proven. 447 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-08-30 09:52:01,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:52:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 40 proven. 447 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-08-30 09:52:02,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828828909] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:52:02,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:52:02,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 49 [2023-08-30 09:52:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600447476] [2023-08-30 09:52:02,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:52:02,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-30 09:52:02,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:52:02,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-30 09:52:02,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1930, Unknown=0, NotChecked=0, Total=2352 [2023-08-30 09:52:02,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 09:52:02,309 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) [2023-08-30 09:52:02,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:52:02,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 09:52:02,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:11,917 INFO L130 PetriNetUnfolder]: 13917/42001 cut-off events. [2023-08-30 09:54:11,917 INFO L131 PetriNetUnfolder]: For 38931729/38931729 co-relation queries the response was YES. [2023-08-30 09:54:20,077 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. [2023-08-30 09:54:20,318 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 2630 selfloop transitions, 7860 changer transitions 118/10610 dead transitions. [2023-08-30 09:54:20,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2889 places, 10610 transitions, 365370 flow [2023-08-30 09:54:20,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 468 states. [2023-08-30 09:54:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2023-08-30 09:54:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 41114 transitions. [2023-08-30 09:54:20,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975132459295355 [2023-08-30 09:54:20,352 INFO L72 ComplementDD]: Start complementDD. Operand 468 states and 41114 transitions. [2023-08-30 09:54:20,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 468 states and 41114 transitions. [2023-08-30 09:54:20,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:20,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 468 states and 41114 transitions. [2023-08-30 09:54:20,397 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) [2023-08-30 09:54:20,470 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) [2023-08-30 09:54:20,487 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) [2023-08-30 09:54:20,487 INFO L175 Difference]: Start difference. First operand has 2423 places, 4181 transitions, 112641 flow. Second operand 468 states and 41114 transitions. [2023-08-30 09:54:20,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2889 places, 10610 transitions, 365370 flow [2023-08-30 10:00:55,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2800 places, 10610 transitions, 303858 flow, removed 29791 selfloop flow, removed 89 redundant places. [2023-08-30 10:00:55,815 INFO L231 Difference]: Finished difference. Result has 2930 places, 8719 transitions, 264582 flow [2023-08-30 10:00:55,819 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} [2023-08-30 10:00:55,820 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2901 predicate places. [2023-08-30 10:00:55,820 INFO L495 AbstractCegarLoop]: Abstraction has has 2930 places, 8719 transitions, 264582 flow [2023-08-30 10:00:55,820 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) [2023-08-30 10:00:55,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:55,821 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 22, 21, 12, 12, 12, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:00:55,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:00:56,021 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 [2023-08-30 10:00:56,021 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)] === [2023-08-30 10:00:56,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:56,022 INFO L85 PathProgramCache]: Analyzing trace with hash -994563883, now seen corresponding path program 7 times [2023-08-30 10:00:56,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:56,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982004323] [2023-08-30 10:00:56,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:56,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:00:56,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:56,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982004323] [2023-08-30 10:00:56,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982004323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:00:56,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633714716] [2023-08-30 10:00:56,554 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 10:00:56,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:00:56,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:00:56,555 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:00:56,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:00:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:56,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 10:00:56,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:00:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 474 proven. 414 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-08-30 10:00:57,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:00:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 474 proven. 414 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-08-30 10:00:57,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633714716] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:00:57,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:00:57,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 72 [2023-08-30 10:00:57,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291034141] [2023-08-30 10:00:57,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:00:57,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-08-30 10:00:57,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-08-30 10:00:57,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=4232, Unknown=0, NotChecked=0, Total=5112 [2023-08-30 10:00:58,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 10:00:58,140 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) [2023-08-30 10:00:58,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:58,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 10:00:58,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15