./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack-2.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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:35:06,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:35:06,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:35:06,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:35:06,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:35:06,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:35:06,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:35:06,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:35:06,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:35:06,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:35:06,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:35:06,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:35:06,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:35:06,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:35:06,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:35:06,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:35:06,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:35:06,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:35:06,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:35:06,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:35:06,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:35:06,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:35:06,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:35:06,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:35:06,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:35:06,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:35:06,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:35:06,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:35:06,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:35:06,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:35:06,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:35:06,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:35:06,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:35:06,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:35:06,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:35:06,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:35:06,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:35:06,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:35:06,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:35:06,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:35:06,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:35:06,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:35:06,697 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:35:06,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:35:06,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:35:06,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:35:06,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:35:06,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:35:06,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:35:06,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:35:06,700 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:35:06,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:35:06,701 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:35:06,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:35:06,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:35:06,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:35:06,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:35:06,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:35:06,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:35:06,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:35:06,703 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:35:06,703 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:35:06,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:35:06,703 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:35:06,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:35:06,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:35:06,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:35:06,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:35:06,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:35:06,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:35:06,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:35:06,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:35:06,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:35:06,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:35:06,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:35:06,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:35:06,706 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:35:06,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:35:06,706 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:35:06,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:35:07,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:35:07,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:35:07,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:35:07,063 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:35:07,064 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:35:07,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2023-08-30 12:35:08,179 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:35:08,390 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:35:08,391 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2023-08-30 12:35:08,403 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469ed7af6/47d290b3425047bf8f153f8dbd2fc112/FLAGb83345d1d [2023-08-30 12:35:08,419 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469ed7af6/47d290b3425047bf8f153f8dbd2fc112 [2023-08-30 12:35:08,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:35:08,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:35:08,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:35:08,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:35:08,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:35:08,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:35:08" (1/1) ... [2023-08-30 12:35:08,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc97cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:08, skipping insertion in model container [2023-08-30 12:35:08,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:35:08" (1/1) ... [2023-08-30 12:35:08,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:35:08,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:35:08,891 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2023-08-30 12:35:08,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:35:08,934 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:35:08,968 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2023-08-30 12:35:08,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:35:09,063 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:35:09,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09 WrapperNode [2023-08-30 12:35:09,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:35:09,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:35:09,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:35:09,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:35:09,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,136 INFO L138 Inliner]: procedures = 277, calls = 44, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 168 [2023-08-30 12:35:09,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:35:09,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:35:09,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:35:09,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:35:09,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:35:09,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:35:09,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:35:09,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:35:09,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (1/1) ... [2023-08-30 12:35:09,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:35:09,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:09,219 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 12:35:09,242 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 12:35:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 12:35:09,257 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 12:35:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 12:35:09,258 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 12:35:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:35:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:35:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:35:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:35:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 12:35:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:35:09,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:35:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:35:09,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:35:09,268 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 12:35:09,411 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:35:09,412 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:35:09,718 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:35:09,729 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:35:09,729 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:35:09,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:35:09 BoogieIcfgContainer [2023-08-30 12:35:09,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:35:09,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:35:09,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:35:09,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:35:09,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:35:08" (1/3) ... [2023-08-30 12:35:09,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6134a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:35:09, skipping insertion in model container [2023-08-30 12:35:09,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:35:09" (2/3) ... [2023-08-30 12:35:09,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6134a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:35:09, skipping insertion in model container [2023-08-30 12:35:09,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:35:09" (3/3) ... [2023-08-30 12:35:09,739 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2023-08-30 12:35:09,745 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:35:09,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:35:09,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:35:09,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:35:09,887 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:35:09,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 176 transitions, 368 flow [2023-08-30 12:35:09,998 INFO L130 PetriNetUnfolder]: 10/174 cut-off events. [2023-08-30 12:35:10,000 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:35:10,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 10/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 451 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-08-30 12:35:10,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 176 transitions, 368 flow [2023-08-30 12:35:10,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 165 transitions, 339 flow [2023-08-30 12:35:10,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:35:10,031 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 165 transitions, 339 flow [2023-08-30 12:35:10,033 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 165 transitions, 339 flow [2023-08-30 12:35:10,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 339 flow [2023-08-30 12:35:10,072 INFO L130 PetriNetUnfolder]: 10/165 cut-off events. [2023-08-30 12:35:10,072 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:35:10,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 165 events. 10/165 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 379 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-08-30 12:35:10,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 9140 [2023-08-30 12:35:13,732 INFO L134 LiptonReduction]: Checked pairs total: 12517 [2023-08-30 12:35:13,733 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-08-30 12:35:13,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:35:13,770 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;@7adb8fc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:35:13,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:35:13,778 INFO L130 PetriNetUnfolder]: 1/17 cut-off events. [2023-08-30 12:35:13,779 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:35:13,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:13,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:13,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:13,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash -175126251, now seen corresponding path program 1 times [2023-08-30 12:35:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:13,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208929447] [2023-08-30 12:35:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:13,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:14,147 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 12:35:14,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:14,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208929447] [2023-08-30 12:35:14,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208929447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:14,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:14,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:35:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402058498] [2023-08-30 12:35:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:14,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:14,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:14,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:14,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:14,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-30 12:35:14,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:14,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:14,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-30 12:35:14,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:14,546 INFO L130 PetriNetUnfolder]: 1406/2275 cut-off events. [2023-08-30 12:35:14,547 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-08-30 12:35:14,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4597 conditions, 2275 events. 1406/2275 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10416 event pairs, 409 based on Foata normal form. 0/1576 useless extension candidates. Maximal degree in co-relation 4306. Up to 1406 conditions per place. [2023-08-30 12:35:14,565 INFO L137 encePairwiseOnDemand]: 322/331 looper letters, 65 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-30 12:35:14,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 293 flow [2023-08-30 12:35:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-30 12:35:14,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609264853977844 [2023-08-30 12:35:14,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-30 12:35:14,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-30 12:35:14,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:14,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-30 12:35:14,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:14,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:14,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:14,600 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 557 transitions. [2023-08-30 12:35:14,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 293 flow [2023-08-30 12:35:14,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 70 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:35:14,606 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 122 flow [2023-08-30 12:35:14,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-30 12:35:14,610 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-30 12:35:14,610 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 122 flow [2023-08-30 12:35:14,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:14,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:14,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:14,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:35:14,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:14,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1109344561, now seen corresponding path program 1 times [2023-08-30 12:35:14,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:14,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297473396] [2023-08-30 12:35:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:14,722 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 12:35:14,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:14,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297473396] [2023-08-30 12:35:14,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297473396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:14,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:14,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:35:14,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918408640] [2023-08-30 12:35:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:14,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:14,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-30 12:35:14,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:14,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:14,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-30 12:35:14,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:15,064 INFO L130 PetriNetUnfolder]: 2094/3475 cut-off events. [2023-08-30 12:35:15,065 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2023-08-30 12:35:15,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 3475 events. 2094/3475 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 18415 event pairs, 990 based on Foata normal form. 0/2825 useless extension candidates. Maximal degree in co-relation 5818. Up to 2104 conditions per place. [2023-08-30 12:35:15,082 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 74 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 12:35:15,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 371 flow [2023-08-30 12:35:15,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-08-30 12:35:15,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599194360523666 [2023-08-30 12:35:15,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-08-30 12:35:15,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-08-30 12:35:15,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:15,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-08-30 12:35:15,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,089 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 122 flow. Second operand 3 states and 556 transitions. [2023-08-30 12:35:15,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 371 flow [2023-08-30 12:35:15,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:35:15,095 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 130 flow [2023-08-30 12:35:15,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-08-30 12:35:15,096 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-30 12:35:15,096 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 130 flow [2023-08-30 12:35:15,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:15,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:15,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:35:15,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:15,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:15,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1551284684, now seen corresponding path program 1 times [2023-08-30 12:35:15,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:15,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086632813] [2023-08-30 12:35:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:15,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:15,149 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 12:35:15,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:15,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086632813] [2023-08-30 12:35:15,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086632813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:15,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:15,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:35:15,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104862077] [2023-08-30 12:35:15,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:15,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:15,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:15,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:15,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:15,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-30 12:35:15,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:15,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-30 12:35:15,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:15,642 INFO L130 PetriNetUnfolder]: 3346/5369 cut-off events. [2023-08-30 12:35:15,642 INFO L131 PetriNetUnfolder]: For 679/679 co-relation queries the response was YES. [2023-08-30 12:35:15,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12561 conditions, 5369 events. 3346/5369 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 30613 event pairs, 1584 based on Foata normal form. 0/4481 useless extension candidates. Maximal degree in co-relation 10280. Up to 3274 conditions per place. [2023-08-30 12:35:15,671 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-30 12:35:15,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 394 flow [2023-08-30 12:35:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:15,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-08-30 12:35:15,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599194360523666 [2023-08-30 12:35:15,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-08-30 12:35:15,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-08-30 12:35:15,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:15,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-08-30 12:35:15,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,678 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 130 flow. Second operand 3 states and 556 transitions. [2023-08-30 12:35:15,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 394 flow [2023-08-30 12:35:15,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:35:15,682 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 144 flow [2023-08-30 12:35:15,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-08-30 12:35:15,684 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 12:35:15,684 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 144 flow [2023-08-30 12:35:15,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:15,685 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:15,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:35:15,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:15,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:15,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1398898743, now seen corresponding path program 1 times [2023-08-30 12:35:15,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:15,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100116125] [2023-08-30 12:35:15,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:15,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:15,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:15,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100116125] [2023-08-30 12:35:15,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100116125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208475381] [2023-08-30 12:35:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:15,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:15,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:15,791 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 12:35:15,816 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 12:35:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:15,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:35:15,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:15,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:35:15,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208475381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:15,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:35:15,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:35:15,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528692853] [2023-08-30 12:35:15,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:15,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:35:15,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:15,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:35:15,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:35:15,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-30 12:35:15,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:15,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-30 12:35:15,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:16,486 INFO L130 PetriNetUnfolder]: 2912/4835 cut-off events. [2023-08-30 12:35:16,487 INFO L131 PetriNetUnfolder]: For 809/809 co-relation queries the response was YES. [2023-08-30 12:35:16,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11402 conditions, 4835 events. 2912/4835 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 27863 event pairs, 189 based on Foata normal form. 0/4273 useless extension candidates. Maximal degree in co-relation 10670. Up to 3012 conditions per place. [2023-08-30 12:35:16,513 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 95 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-08-30 12:35:16,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 98 transitions, 504 flow [2023-08-30 12:35:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:35:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:35:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 732 transitions. [2023-08-30 12:35:16,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552870090634441 [2023-08-30 12:35:16,516 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 732 transitions. [2023-08-30 12:35:16,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 732 transitions. [2023-08-30 12:35:16,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:16,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 732 transitions. [2023-08-30 12:35:16,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:16,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:16,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:16,522 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 144 flow. Second operand 4 states and 732 transitions. [2023-08-30 12:35:16,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 98 transitions, 504 flow [2023-08-30 12:35:16,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 98 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:35:16,525 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 142 flow [2023-08-30 12:35:16,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-30 12:35:16,526 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 12:35:16,526 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 142 flow [2023-08-30 12:35:16,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:16,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:16,527 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:16,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 12:35:16,737 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 12:35:16,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:16,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:16,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1398898774, now seen corresponding path program 1 times [2023-08-30 12:35:16,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:16,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976445117] [2023-08-30 12:35:16,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:16,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:35:16,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:16,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976445117] [2023-08-30 12:35:16,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976445117] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:16,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:16,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:35:16,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972327182] [2023-08-30 12:35:16,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:16,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:16,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:16,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:16,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-08-30 12:35:16,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:16,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:16,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-08-30 12:35:16,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:17,122 INFO L130 PetriNetUnfolder]: 2809/4632 cut-off events. [2023-08-30 12:35:17,122 INFO L131 PetriNetUnfolder]: For 881/881 co-relation queries the response was YES. [2023-08-30 12:35:17,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10952 conditions, 4632 events. 2809/4632 cut-off events. For 881/881 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26447 event pairs, 537 based on Foata normal form. 0/4182 useless extension candidates. Maximal degree in co-relation 10244. Up to 3740 conditions per place. [2023-08-30 12:35:17,143 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 59 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-30 12:35:17,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 329 flow [2023-08-30 12:35:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2023-08-30 12:35:17,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540785498489426 [2023-08-30 12:35:17,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2023-08-30 12:35:17,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2023-08-30 12:35:17,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:17,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2023-08-30 12:35:17,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:17,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:17,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:17,150 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 142 flow. Second operand 3 states and 537 transitions. [2023-08-30 12:35:17,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 329 flow [2023-08-30 12:35:17,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:35:17,153 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 151 flow [2023-08-30 12:35:17,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-30 12:35:17,153 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 12:35:17,154 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 151 flow [2023-08-30 12:35:17,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:17,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:17,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:17,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:35:17,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:17,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1784702985, now seen corresponding path program 1 times [2023-08-30 12:35:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977139880] [2023-08-30 12:35:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:17,242 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 12:35:17,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977139880] [2023-08-30 12:35:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977139880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:17,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593023119] [2023-08-30 12:35:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:17,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:17,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:17,253 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 12:35:17,271 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 12:35:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:17,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:35:17,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:17,388 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 12:35:17,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:35:17,422 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 12:35:17,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593023119] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:35:17,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:35:17,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 12:35:17,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768510768] [2023-08-30 12:35:17,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:35:17,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 12:35:17,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:17,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 12:35:17,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 12:35:17,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2023-08-30 12:35:17,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 151 flow. Second operand has 10 states, 10 states have (on average 159.7) internal successors, (1597), 10 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:17,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:17,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2023-08-30 12:35:17,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:18,409 INFO L130 PetriNetUnfolder]: 5222/8549 cut-off events. [2023-08-30 12:35:18,410 INFO L131 PetriNetUnfolder]: For 3764/3764 co-relation queries the response was YES. [2023-08-30 12:35:18,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21494 conditions, 8549 events. 5222/8549 cut-off events. For 3764/3764 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 49415 event pairs, 1050 based on Foata normal form. 110/7907 useless extension candidates. Maximal degree in co-relation 20552. Up to 2827 conditions per place. [2023-08-30 12:35:18,454 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 248 selfloop transitions, 42 changer transitions 0/291 dead transitions. [2023-08-30 12:35:18,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 291 transitions, 1587 flow [2023-08-30 12:35:18,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 12:35:18,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 12:35:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2773 transitions. [2023-08-30 12:35:18,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236027190332326 [2023-08-30 12:35:18,464 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2773 transitions. [2023-08-30 12:35:18,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2773 transitions. [2023-08-30 12:35:18,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:18,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2773 transitions. [2023-08-30 12:35:18,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 173.3125) internal successors, (2773), 16 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:18,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:18,482 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:18,482 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 151 flow. Second operand 16 states and 2773 transitions. [2023-08-30 12:35:18,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 291 transitions, 1587 flow [2023-08-30 12:35:18,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 291 transitions, 1544 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:35:18,498 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 449 flow [2023-08-30 12:35:18,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=449, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2023-08-30 12:35:18,501 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-30 12:35:18,501 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 449 flow [2023-08-30 12:35:18,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 159.7) internal successors, (1597), 10 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:18,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:18,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:18,511 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 12:35:18,707 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 12:35:18,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:18,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:18,709 INFO L85 PathProgramCache]: Analyzing trace with hash -527172851, now seen corresponding path program 1 times [2023-08-30 12:35:18,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:18,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280015388] [2023-08-30 12:35:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:18,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:18,782 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 12:35:18,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:18,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280015388] [2023-08-30 12:35:18,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280015388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:18,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:18,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:35:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548573565] [2023-08-30 12:35:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:18,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:18,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:18,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 331 [2023-08-30 12:35:18,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:18,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:18,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 331 [2023-08-30 12:35:18,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:19,087 INFO L130 PetriNetUnfolder]: 1681/3028 cut-off events. [2023-08-30 12:35:19,087 INFO L131 PetriNetUnfolder]: For 2736/2736 co-relation queries the response was YES. [2023-08-30 12:35:19,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8839 conditions, 3028 events. 1681/3028 cut-off events. For 2736/2736 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 16658 event pairs, 301 based on Foata normal form. 288/3166 useless extension candidates. Maximal degree in co-relation 8099. Up to 2344 conditions per place. [2023-08-30 12:35:19,100 INFO L137 encePairwiseOnDemand]: 324/331 looper letters, 59 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-08-30 12:35:19,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 463 flow [2023-08-30 12:35:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-08-30 12:35:19,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307150050352467 [2023-08-30 12:35:19,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-08-30 12:35:19,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-08-30 12:35:19,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:19,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-08-30 12:35:19,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,106 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 449 flow. Second operand 3 states and 527 transitions. [2023-08-30 12:35:19,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 463 flow [2023-08-30 12:35:19,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 427 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-30 12:35:19,128 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 265 flow [2023-08-30 12:35:19,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-08-30 12:35:19,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-08-30 12:35:19,129 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 265 flow [2023-08-30 12:35:19,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:19,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:19,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:35:19,130 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:19,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 507482433, now seen corresponding path program 1 times [2023-08-30 12:35:19,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:19,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559308788] [2023-08-30 12:35:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:19,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:19,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:19,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559308788] [2023-08-30 12:35:19,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559308788] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:19,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092937712] [2023-08-30 12:35:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:19,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:19,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:19,234 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 12:35:19,259 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 12:35:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:19,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:35:19,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:19,368 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 12:35:19,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:35:19,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092937712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:19,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:35:19,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 12:35:19,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762877364] [2023-08-30 12:35:19,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:19,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:35:19,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:19,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:35:19,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:35:19,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2023-08-30 12:35:19,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:19,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2023-08-30 12:35:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:19,767 INFO L130 PetriNetUnfolder]: 1720/3175 cut-off events. [2023-08-30 12:35:19,767 INFO L131 PetriNetUnfolder]: For 2231/2231 co-relation queries the response was YES. [2023-08-30 12:35:19,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9177 conditions, 3175 events. 1720/3175 cut-off events. For 2231/2231 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 16910 event pairs, 375 based on Foata normal form. 126/3129 useless extension candidates. Maximal degree in co-relation 8178. Up to 1602 conditions per place. [2023-08-30 12:35:19,783 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 96 selfloop transitions, 18 changer transitions 0/115 dead transitions. [2023-08-30 12:35:19,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 723 flow [2023-08-30 12:35:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:35:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:35:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1038 transitions. [2023-08-30 12:35:19,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226586102719033 [2023-08-30 12:35:19,787 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1038 transitions. [2023-08-30 12:35:19,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1038 transitions. [2023-08-30 12:35:19,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:19,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1038 transitions. [2023-08-30 12:35:19,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,794 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,794 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 265 flow. Second operand 6 states and 1038 transitions. [2023-08-30 12:35:19,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 723 flow [2023-08-30 12:35:19,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 704 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:35:19,802 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 344 flow [2023-08-30 12:35:19,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-08-30 12:35:19,805 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 12:35:19,805 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 344 flow [2023-08-30 12:35:19,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:19,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:19,806 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:19,813 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 12:35:20,011 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 12:35:20,012 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:20,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:20,012 INFO L85 PathProgramCache]: Analyzing trace with hash -698507269, now seen corresponding path program 1 times [2023-08-30 12:35:20,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:20,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046866143] [2023-08-30 12:35:20,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:20,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:20,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:20,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046866143] [2023-08-30 12:35:20,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046866143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:20,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:20,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:35:20,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293054812] [2023-08-30 12:35:20,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:20,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:35:20,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:20,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:35:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:35:20,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 331 [2023-08-30 12:35:20,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:20,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:20,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 331 [2023-08-30 12:35:20,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:20,467 INFO L130 PetriNetUnfolder]: 2039/3746 cut-off events. [2023-08-30 12:35:20,467 INFO L131 PetriNetUnfolder]: For 3648/3648 co-relation queries the response was YES. [2023-08-30 12:35:20,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11238 conditions, 3746 events. 2039/3746 cut-off events. For 3648/3648 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 20411 event pairs, 461 based on Foata normal form. 18/3534 useless extension candidates. Maximal degree in co-relation 10396. Up to 2141 conditions per place. [2023-08-30 12:35:20,489 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 110 selfloop transitions, 6 changer transitions 3/120 dead transitions. [2023-08-30 12:35:20,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 849 flow [2023-08-30 12:35:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:35:20,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:35:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 881 transitions. [2023-08-30 12:35:20,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323262839879154 [2023-08-30 12:35:20,492 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 881 transitions. [2023-08-30 12:35:20,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 881 transitions. [2023-08-30 12:35:20,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:20,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 881 transitions. [2023-08-30 12:35:20,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:20,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 331.0) internal successors, (1986), 6 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:20,499 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 331.0) internal successors, (1986), 6 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:20,499 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 344 flow. Second operand 5 states and 881 transitions. [2023-08-30 12:35:20,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 849 flow [2023-08-30 12:35:20,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 833 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 12:35:20,511 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 367 flow [2023-08-30 12:35:20,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-08-30 12:35:20,513 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-30 12:35:20,513 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 367 flow [2023-08-30 12:35:20,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:20,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:20,514 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 12:35:20,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:35:20,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:20,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash 124965910, now seen corresponding path program 1 times [2023-08-30 12:35:20,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:20,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466425630] [2023-08-30 12:35:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:20,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:35:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:20,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466425630] [2023-08-30 12:35:20,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466425630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:20,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:20,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:35:20,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703074593] [2023-08-30 12:35:20,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:20,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:20,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:20,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:20,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-08-30 12:35:20,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:20,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:20,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-08-30 12:35:20,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:20,882 INFO L130 PetriNetUnfolder]: 1831/3354 cut-off events. [2023-08-30 12:35:20,883 INFO L131 PetriNetUnfolder]: For 3650/3656 co-relation queries the response was YES. [2023-08-30 12:35:20,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10372 conditions, 3354 events. 1831/3354 cut-off events. For 3650/3656 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 18198 event pairs, 582 based on Foata normal form. 6/3206 useless extension candidates. Maximal degree in co-relation 6817. Up to 2007 conditions per place. [2023-08-30 12:35:20,905 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 81 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-30 12:35:20,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 693 flow [2023-08-30 12:35:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-30 12:35:20,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5397784491440081 [2023-08-30 12:35:20,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-30 12:35:20,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-30 12:35:20,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:20,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-30 12:35:20,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:20,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:20,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:20,911 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 367 flow. Second operand 3 states and 536 transitions. [2023-08-30 12:35:20,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 693 flow [2023-08-30 12:35:20,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 86 transitions, 683 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 12:35:20,922 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 373 flow [2023-08-30 12:35:20,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=373, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2023-08-30 12:35:20,923 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-08-30 12:35:20,923 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 373 flow [2023-08-30 12:35:20,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:20,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:20,924 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 12:35:20,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:35:20,925 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:20,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash 124965909, now seen corresponding path program 1 times [2023-08-30 12:35:20,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:20,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404959179] [2023-08-30 12:35:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:21,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:21,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404959179] [2023-08-30 12:35:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404959179] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:21,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466990132] [2023-08-30 12:35:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:21,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:21,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:21,006 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 12:35:21,032 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 12:35:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:21,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:35:21,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:21,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:35:21,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466990132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:21,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:35:21,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:35:21,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162921118] [2023-08-30 12:35:21,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:21,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:35:21,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:21,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:35:21,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:35:21,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-30 12:35:21,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:21,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:21,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-30 12:35:21,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:21,551 INFO L130 PetriNetUnfolder]: 1713/3084 cut-off events. [2023-08-30 12:35:21,551 INFO L131 PetriNetUnfolder]: For 3701/3719 co-relation queries the response was YES. [2023-08-30 12:35:21,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9782 conditions, 3084 events. 1713/3084 cut-off events. For 3701/3719 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 15726 event pairs, 384 based on Foata normal form. 76/3082 useless extension candidates. Maximal degree in co-relation 9290. Up to 2505 conditions per place. [2023-08-30 12:35:21,571 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 88 selfloop transitions, 2 changer transitions 2/93 dead transitions. [2023-08-30 12:35:21,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 703 flow [2023-08-30 12:35:21,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:35:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:35:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 712 transitions. [2023-08-30 12:35:21,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377643504531722 [2023-08-30 12:35:21,574 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 712 transitions. [2023-08-30 12:35:21,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 712 transitions. [2023-08-30 12:35:21,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:21,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 712 transitions. [2023-08-30 12:35:21,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:21,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:21,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:21,580 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 373 flow. Second operand 4 states and 712 transitions. [2023-08-30 12:35:21,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 703 flow [2023-08-30 12:35:21,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 93 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:35:21,591 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 368 flow [2023-08-30 12:35:21,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-08-30 12:35:21,591 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-08-30 12:35:21,592 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 368 flow [2023-08-30 12:35:21,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:21,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:21,592 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:21,601 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 12:35:21,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:21,802 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:21,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:21,802 INFO L85 PathProgramCache]: Analyzing trace with hash 350299545, now seen corresponding path program 1 times [2023-08-30 12:35:21,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:21,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183065541] [2023-08-30 12:35:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:21,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183065541] [2023-08-30 12:35:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183065541] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:21,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546924404] [2023-08-30 12:35:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:21,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:21,931 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 12:35:21,934 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 12:35:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:22,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:35:22,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:35:22,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:35:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546924404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:22,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:35:22,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 12:35:22,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235475862] [2023-08-30 12:35:22,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:22,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:35:22,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:22,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:35:22,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:35:22,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-30 12:35:22,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:22,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:22,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-30 12:35:22,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:22,603 INFO L130 PetriNetUnfolder]: 2042/3657 cut-off events. [2023-08-30 12:35:22,603 INFO L131 PetriNetUnfolder]: For 4683/4683 co-relation queries the response was YES. [2023-08-30 12:35:22,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11477 conditions, 3657 events. 2042/3657 cut-off events. For 4683/4683 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 19022 event pairs, 527 based on Foata normal form. 44/3611 useless extension candidates. Maximal degree in co-relation 10606. Up to 1741 conditions per place. [2023-08-30 12:35:22,622 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 109 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2023-08-30 12:35:22,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 131 transitions, 947 flow [2023-08-30 12:35:22,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:35:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:35:22,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1165 transitions. [2023-08-30 12:35:22,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028053517479499 [2023-08-30 12:35:22,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1165 transitions. [2023-08-30 12:35:22,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1165 transitions. [2023-08-30 12:35:22,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:22,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1165 transitions. [2023-08-30 12:35:22,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.42857142857142) internal successors, (1165), 7 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:22,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:22,632 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:22,632 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 368 flow. Second operand 7 states and 1165 transitions. [2023-08-30 12:35:22,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 131 transitions, 947 flow [2023-08-30 12:35:22,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 131 transitions, 944 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:35:22,643 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 547 flow [2023-08-30 12:35:22,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=547, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-08-30 12:35:22,644 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2023-08-30 12:35:22,644 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 547 flow [2023-08-30 12:35:22,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:22,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:22,645 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:22,650 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 12:35:22,850 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 12:35:22,850 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:22,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash -770938367, now seen corresponding path program 1 times [2023-08-30 12:35:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864308104] [2023-08-30 12:35:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864308104] [2023-08-30 12:35:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864308104] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59595129] [2023-08-30 12:35:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:22,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:22,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:22,953 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 12:35:22,956 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 12:35:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:23,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:35:23,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:35:23,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:35:23,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59595129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:23,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:35:23,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 12:35:23,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963063280] [2023-08-30 12:35:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:23,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:35:23,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:23,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:35:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:35:23,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-30 12:35:23,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:23,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:23,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-30 12:35:23,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:23,668 INFO L130 PetriNetUnfolder]: 2554/4555 cut-off events. [2023-08-30 12:35:23,668 INFO L131 PetriNetUnfolder]: For 7165/7165 co-relation queries the response was YES. [2023-08-30 12:35:23,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14818 conditions, 4555 events. 2554/4555 cut-off events. For 7165/7165 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 24153 event pairs, 611 based on Foata normal form. 68/4509 useless extension candidates. Maximal degree in co-relation 13974. Up to 2194 conditions per place. [2023-08-30 12:35:23,698 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 110 selfloop transitions, 39 changer transitions 0/150 dead transitions. [2023-08-30 12:35:23,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 150 transitions, 1308 flow [2023-08-30 12:35:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:35:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:35:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1164 transitions. [2023-08-30 12:35:23,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023737591713423 [2023-08-30 12:35:23,701 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1164 transitions. [2023-08-30 12:35:23,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1164 transitions. [2023-08-30 12:35:23,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:23,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1164 transitions. [2023-08-30 12:35:23,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.28571428571428) internal successors, (1164), 7 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:23,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:23,708 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:23,708 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 547 flow. Second operand 7 states and 1164 transitions. [2023-08-30 12:35:23,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 150 transitions, 1308 flow [2023-08-30 12:35:23,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 150 transitions, 1262 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-08-30 12:35:23,723 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 946 flow [2023-08-30 12:35:23,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=946, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2023-08-30 12:35:23,724 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-30 12:35:23,724 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 946 flow [2023-08-30 12:35:23,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:23,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:23,725 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 12:35:23,733 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 12:35:23,931 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 12:35:23,931 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:23,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:23,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1836905027, now seen corresponding path program 1 times [2023-08-30 12:35:23,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:23,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448007235] [2023-08-30 12:35:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:23,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:24,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:24,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448007235] [2023-08-30 12:35:24,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448007235] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:24,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305856131] [2023-08-30 12:35:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:24,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:24,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:24,121 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 12:35:24,142 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 12:35:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:24,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:35:24,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:24,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:35:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:24,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305856131] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:35:24,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:35:24,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 12:35:24,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019710434] [2023-08-30 12:35:24,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:35:24,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 12:35:24,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 12:35:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 12:35:24,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2023-08-30 12:35:24,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 946 flow. Second operand has 18 states, 18 states have (on average 160.05555555555554) internal successors, (2881), 18 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:24,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:24,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2023-08-30 12:35:24,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:25,628 INFO L130 PetriNetUnfolder]: 4444/7925 cut-off events. [2023-08-30 12:35:25,628 INFO L131 PetriNetUnfolder]: For 17777/17777 co-relation queries the response was YES. [2023-08-30 12:35:25,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26866 conditions, 7925 events. 4444/7925 cut-off events. For 17777/17777 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 42378 event pairs, 1003 based on Foata normal form. 192/7913 useless extension candidates. Maximal degree in co-relation 25330. Up to 2524 conditions per place. [2023-08-30 12:35:25,673 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 302 selfloop transitions, 42 changer transitions 3/348 dead transitions. [2023-08-30 12:35:25,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 348 transitions, 2829 flow [2023-08-30 12:35:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:35:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:35:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3245 transitions. [2023-08-30 12:35:25,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159802830338687 [2023-08-30 12:35:25,681 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3245 transitions. [2023-08-30 12:35:25,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3245 transitions. [2023-08-30 12:35:25,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:25,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3245 transitions. [2023-08-30 12:35:25,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 170.78947368421052) internal successors, (3245), 19 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:25,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:25,696 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:25,696 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 946 flow. Second operand 19 states and 3245 transitions. [2023-08-30 12:35:25,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 348 transitions, 2829 flow [2023-08-30 12:35:25,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 348 transitions, 2783 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-08-30 12:35:25,728 INFO L231 Difference]: Finished difference. Result has 113 places, 111 transitions, 1269 flow [2023-08-30 12:35:25,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1269, PETRI_PLACES=113, PETRI_TRANSITIONS=111} [2023-08-30 12:35:25,729 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-08-30 12:35:25,729 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 111 transitions, 1269 flow [2023-08-30 12:35:25,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 160.05555555555554) internal successors, (2881), 18 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:25,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:25,730 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:25,737 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 12:35:25,937 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 12:35:25,937 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:25,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1957238620, now seen corresponding path program 1 times [2023-08-30 12:35:25,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:25,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220792370] [2023-08-30 12:35:25,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:25,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:35:26,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:26,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220792370] [2023-08-30 12:35:26,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220792370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:26,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:26,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:35:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039699840] [2023-08-30 12:35:26,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:35:26,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:26,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:35:26,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:35:26,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 331 [2023-08-30 12:35:26,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 111 transitions, 1269 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:26,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:26,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 331 [2023-08-30 12:35:26,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:26,787 INFO L130 PetriNetUnfolder]: 4308/7765 cut-off events. [2023-08-30 12:35:26,788 INFO L131 PetriNetUnfolder]: For 18792/18792 co-relation queries the response was YES. [2023-08-30 12:35:26,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27215 conditions, 7765 events. 4308/7765 cut-off events. For 18792/18792 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 42644 event pairs, 3408 based on Foata normal form. 30/7591 useless extension candidates. Maximal degree in co-relation 25600. Up to 7597 conditions per place. [2023-08-30 12:35:26,825 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 107 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2023-08-30 12:35:26,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1426 flow [2023-08-30 12:35:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:35:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:35:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 667 transitions. [2023-08-30 12:35:26,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037764350453172 [2023-08-30 12:35:26,827 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 667 transitions. [2023-08-30 12:35:26,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 667 transitions. [2023-08-30 12:35:26,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:26,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 667 transitions. [2023-08-30 12:35:26,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:26,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:26,831 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:26,831 INFO L175 Difference]: Start difference. First operand has 113 places, 111 transitions, 1269 flow. Second operand 4 states and 667 transitions. [2023-08-30 12:35:26,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1426 flow [2023-08-30 12:35:26,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 1333 flow, removed 37 selfloop flow, removed 5 redundant places. [2023-08-30 12:35:26,876 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 1108 flow [2023-08-30 12:35:26,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1108, PETRI_PLACES=110, PETRI_TRANSITIONS=107} [2023-08-30 12:35:26,876 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2023-08-30 12:35:26,876 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 1108 flow [2023-08-30 12:35:26,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:26,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:26,877 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 12:35:26,877 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:26,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1935694427, now seen corresponding path program 2 times [2023-08-30 12:35:26,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:26,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574704934] [2023-08-30 12:35:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:26,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:35:27,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:27,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574704934] [2023-08-30 12:35:27,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574704934] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:27,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901644685] [2023-08-30 12:35:27,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:35:27,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:27,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:27,056 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 12:35:27,082 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 12:35:27,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:35:27,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:35:27,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:35:27,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:35:27,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:35:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:35:27,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901644685] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:35:27,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:35:27,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 12:35:27,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343220921] [2023-08-30 12:35:27,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:35:27,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:35:27,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:27,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:35:27,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:35:27,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 331 [2023-08-30 12:35:27,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 107 transitions, 1108 flow. Second operand has 16 states, 16 states have (on average 154.625) internal successors, (2474), 16 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:27,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:27,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 331 [2023-08-30 12:35:27,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:28,655 INFO L130 PetriNetUnfolder]: 5617/10008 cut-off events. [2023-08-30 12:35:28,655 INFO L131 PetriNetUnfolder]: For 20858/20858 co-relation queries the response was YES. [2023-08-30 12:35:28,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33840 conditions, 10008 events. 5617/10008 cut-off events. For 20858/20858 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 56741 event pairs, 1067 based on Foata normal form. 78/9828 useless extension candidates. Maximal degree in co-relation 32156. Up to 2943 conditions per place. [2023-08-30 12:35:28,707 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 217 selfloop transitions, 99 changer transitions 3/320 dead transitions. [2023-08-30 12:35:28,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 320 transitions, 2888 flow [2023-08-30 12:35:28,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 12:35:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 12:35:28,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3223 transitions. [2023-08-30 12:35:28,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48685800604229607 [2023-08-30 12:35:28,715 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3223 transitions. [2023-08-30 12:35:28,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3223 transitions. [2023-08-30 12:35:28,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:28,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3223 transitions. [2023-08-30 12:35:28,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 161.15) internal successors, (3223), 20 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:28,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 331.0) internal successors, (6951), 21 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:28,731 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 331.0) internal successors, (6951), 21 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:28,731 INFO L175 Difference]: Start difference. First operand has 110 places, 107 transitions, 1108 flow. Second operand 20 states and 3223 transitions. [2023-08-30 12:35:28,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 320 transitions, 2888 flow [2023-08-30 12:35:28,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 320 transitions, 2878 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:35:28,790 INFO L231 Difference]: Finished difference. Result has 130 places, 147 transitions, 1899 flow [2023-08-30 12:35:28,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1899, PETRI_PLACES=130, PETRI_TRANSITIONS=147} [2023-08-30 12:35:28,790 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2023-08-30 12:35:28,791 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 147 transitions, 1899 flow [2023-08-30 12:35:28,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 154.625) internal successors, (2474), 16 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:28,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:28,792 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:28,807 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 12:35:29,005 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,SelfDestructingSolverStorable15 [2023-08-30 12:35:29,006 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:29,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1252909443, now seen corresponding path program 1 times [2023-08-30 12:35:29,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:29,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733839008] [2023-08-30 12:35:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:29,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:29,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:29,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733839008] [2023-08-30 12:35:29,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733839008] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:29,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860221205] [2023-08-30 12:35:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:29,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:29,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:29,175 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 12:35:29,200 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 12:35:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:29,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:35:29,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:29,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:35:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:29,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860221205] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:35:29,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:35:29,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-08-30 12:35:29,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509999509] [2023-08-30 12:35:29,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:35:29,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:35:29,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:29,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:35:29,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:35:29,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 331 [2023-08-30 12:35:29,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 147 transitions, 1899 flow. Second operand has 16 states, 16 states have (on average 155.25) internal successors, (2484), 16 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:29,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:29,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 331 [2023-08-30 12:35:29,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:30,835 INFO L130 PetriNetUnfolder]: 6026/10771 cut-off events. [2023-08-30 12:35:30,836 INFO L131 PetriNetUnfolder]: For 27006/27006 co-relation queries the response was YES. [2023-08-30 12:35:30,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37688 conditions, 10771 events. 6026/10771 cut-off events. For 27006/27006 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 62796 event pairs, 1079 based on Foata normal form. 102/10591 useless extension candidates. Maximal degree in co-relation 35948. Up to 6086 conditions per place. [2023-08-30 12:35:30,896 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 168 selfloop transitions, 122 changer transitions 3/294 dead transitions. [2023-08-30 12:35:30,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 294 transitions, 3133 flow [2023-08-30 12:35:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:35:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:35:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3040 transitions. [2023-08-30 12:35:30,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48338368580060426 [2023-08-30 12:35:30,901 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3040 transitions. [2023-08-30 12:35:30,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3040 transitions. [2023-08-30 12:35:30,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:30,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3040 transitions. [2023-08-30 12:35:30,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:30,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:30,913 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:30,914 INFO L175 Difference]: Start difference. First operand has 130 places, 147 transitions, 1899 flow. Second operand 19 states and 3040 transitions. [2023-08-30 12:35:30,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 294 transitions, 3133 flow [2023-08-30 12:35:31,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 294 transitions, 2885 flow, removed 84 selfloop flow, removed 6 redundant places. [2023-08-30 12:35:31,105 INFO L231 Difference]: Finished difference. Result has 138 places, 162 transitions, 2079 flow [2023-08-30 12:35:31,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2079, PETRI_PLACES=138, PETRI_TRANSITIONS=162} [2023-08-30 12:35:31,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2023-08-30 12:35:31,106 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 162 transitions, 2079 flow [2023-08-30 12:35:31,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 155.25) internal successors, (2484), 16 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:31,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:31,107 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:31,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 12:35:31,313 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,SelfDestructingSolverStorable16 [2023-08-30 12:35:31,313 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:31,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash 650444663, now seen corresponding path program 1 times [2023-08-30 12:35:31,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:31,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118174704] [2023-08-30 12:35:31,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:31,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:31,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:31,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118174704] [2023-08-30 12:35:31,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118174704] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:31,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354620365] [2023-08-30 12:35:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:31,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:31,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:31,585 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 12:35:31,612 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 12:35:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:31,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 12:35:31,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:31,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:35:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:31,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354620365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:35:31,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:35:31,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-08-30 12:35:31,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393083192] [2023-08-30 12:35:31,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:35:31,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 12:35:31,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:31,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 12:35:31,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-08-30 12:35:32,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-30 12:35:32,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 162 transitions, 2079 flow. Second operand has 20 states, 20 states have (on average 156.1) internal successors, (3122), 20 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:32,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:32,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-30 12:35:32,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:33,818 INFO L130 PetriNetUnfolder]: 7934/14173 cut-off events. [2023-08-30 12:35:33,818 INFO L131 PetriNetUnfolder]: For 36501/36501 co-relation queries the response was YES. [2023-08-30 12:35:33,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49505 conditions, 14173 events. 7934/14173 cut-off events. For 36501/36501 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 83493 event pairs, 1371 based on Foata normal form. 72/13867 useless extension candidates. Maximal degree in co-relation 47728. Up to 6122 conditions per place. [2023-08-30 12:35:33,890 INFO L137 encePairwiseOnDemand]: 322/331 looper letters, 274 selfloop transitions, 180 changer transitions 3/458 dead transitions. [2023-08-30 12:35:33,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 458 transitions, 4902 flow [2023-08-30 12:35:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 12:35:33,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 12:35:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4070 transitions. [2023-08-30 12:35:33,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918429003021148 [2023-08-30 12:35:33,895 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4070 transitions. [2023-08-30 12:35:33,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4070 transitions. [2023-08-30 12:35:33,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:33,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4070 transitions. [2023-08-30 12:35:33,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 162.8) internal successors, (4070), 25 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:33,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 331.0) internal successors, (8606), 26 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:33,910 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 331.0) internal successors, (8606), 26 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:33,911 INFO L175 Difference]: Start difference. First operand has 138 places, 162 transitions, 2079 flow. Second operand 25 states and 4070 transitions. [2023-08-30 12:35:33,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 458 transitions, 4902 flow [2023-08-30 12:35:34,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 458 transitions, 3963 flow, removed 222 selfloop flow, removed 16 redundant places. [2023-08-30 12:35:34,014 INFO L231 Difference]: Finished difference. Result has 152 places, 239 transitions, 2798 flow [2023-08-30 12:35:34,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2798, PETRI_PLACES=152, PETRI_TRANSITIONS=239} [2023-08-30 12:35:34,015 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2023-08-30 12:35:34,015 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 239 transitions, 2798 flow [2023-08-30 12:35:34,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.1) internal successors, (3122), 20 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:34,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:34,016 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:34,024 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 12:35:34,221 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,SelfDestructingSolverStorable17 [2023-08-30 12:35:34,222 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:34,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:34,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1592052127, now seen corresponding path program 3 times [2023-08-30 12:35:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:34,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787245747] [2023-08-30 12:35:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:34,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:35:34,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:34,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787245747] [2023-08-30 12:35:34,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787245747] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:34,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168307232] [2023-08-30 12:35:34,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:35:34,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:34,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:34,493 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 12:35:34,518 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 12:35:34,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 12:35:34,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:35:34,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 12:35:34,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:35:34,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:35:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:35:34,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168307232] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:35:34,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:35:34,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-30 12:35:34,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055278819] [2023-08-30 12:35:34,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:35:34,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 12:35:34,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:34,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 12:35:34,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-08-30 12:35:35,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 331 [2023-08-30 12:35:35,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 239 transitions, 2798 flow. Second operand has 21 states, 21 states have (on average 152.76190476190476) internal successors, (3208), 21 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:35,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:35,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 331 [2023-08-30 12:35:35,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:37,748 INFO L130 PetriNetUnfolder]: 11210/20015 cut-off events. [2023-08-30 12:35:37,748 INFO L131 PetriNetUnfolder]: For 46104/46104 co-relation queries the response was YES. [2023-08-30 12:35:37,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66852 conditions, 20015 events. 11210/20015 cut-off events. For 46104/46104 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 122815 event pairs, 2559 based on Foata normal form. 144/19625 useless extension candidates. Maximal degree in co-relation 65124. Up to 4156 conditions per place. [2023-08-30 12:35:37,873 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 340 selfloop transitions, 301 changer transitions 3/645 dead transitions. [2023-08-30 12:35:37,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 645 transitions, 6745 flow [2023-08-30 12:35:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-30 12:35:37,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-30 12:35:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4164 transitions. [2023-08-30 12:35:37,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48384847780618173 [2023-08-30 12:35:37,881 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4164 transitions. [2023-08-30 12:35:37,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4164 transitions. [2023-08-30 12:35:37,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:37,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4164 transitions. [2023-08-30 12:35:37,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.15384615384616) internal successors, (4164), 26 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:37,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 331.0) internal successors, (8937), 27 states have internal predecessors, (8937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:37,895 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 331.0) internal successors, (8937), 27 states have internal predecessors, (8937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:37,896 INFO L175 Difference]: Start difference. First operand has 152 places, 239 transitions, 2798 flow. Second operand 26 states and 4164 transitions. [2023-08-30 12:35:37,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 645 transitions, 6745 flow [2023-08-30 12:35:38,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 645 transitions, 6429 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-08-30 12:35:38,039 INFO L231 Difference]: Finished difference. Result has 172 places, 382 transitions, 5137 flow [2023-08-30 12:35:38,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5137, PETRI_PLACES=172, PETRI_TRANSITIONS=382} [2023-08-30 12:35:38,040 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-08-30 12:35:38,040 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 382 transitions, 5137 flow [2023-08-30 12:35:38,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 152.76190476190476) internal successors, (3208), 21 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:38,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:38,041 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-08-30 12:35:38,048 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 12:35:38,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:38,241 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:38,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash -18560069, now seen corresponding path program 2 times [2023-08-30 12:35:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:38,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138073506] [2023-08-30 12:35:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:38,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:38,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138073506] [2023-08-30 12:35:38,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138073506] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:38,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785050516] [2023-08-30 12:35:38,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:35:38,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:38,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:38,605 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 12:35:38,606 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 12:35:38,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:35:38,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:35:38,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:35:38,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:35:38,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:35:38,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785050516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:38,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:35:38,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 23 [2023-08-30 12:35:38,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945474252] [2023-08-30 12:35:38,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:38,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 12:35:38,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:38,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 12:35:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-08-30 12:35:38,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-08-30 12:35:38,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 382 transitions, 5137 flow. Second operand has 8 states, 8 states have (on average 166.625) internal successors, (1333), 8 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:38,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:38,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-08-30 12:35:38,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:42,862 INFO L130 PetriNetUnfolder]: 16675/29008 cut-off events. [2023-08-30 12:35:42,862 INFO L131 PetriNetUnfolder]: For 66609/66627 co-relation queries the response was YES. [2023-08-30 12:35:42,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99999 conditions, 29008 events. 16675/29008 cut-off events. For 66609/66627 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 185947 event pairs, 3440 based on Foata normal form. 462/28740 useless extension candidates. Maximal degree in co-relation 99957. Up to 11782 conditions per place. [2023-08-30 12:35:43,026 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 902 selfloop transitions, 10 changer transitions 9/922 dead transitions. [2023-08-30 12:35:43,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 922 transitions, 13602 flow [2023-08-30 12:35:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:35:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:35:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1442 transitions. [2023-08-30 12:35:43,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445619335347432 [2023-08-30 12:35:43,028 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1442 transitions. [2023-08-30 12:35:43,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1442 transitions. [2023-08-30 12:35:43,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:43,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1442 transitions. [2023-08-30 12:35:43,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 180.25) internal successors, (1442), 8 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:43,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:43,032 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:43,032 INFO L175 Difference]: Start difference. First operand has 172 places, 382 transitions, 5137 flow. Second operand 8 states and 1442 transitions. [2023-08-30 12:35:43,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 922 transitions, 13602 flow [2023-08-30 12:35:43,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 922 transitions, 11600 flow, removed 38 selfloop flow, removed 27 redundant places. [2023-08-30 12:35:43,342 INFO L231 Difference]: Finished difference. Result has 150 places, 333 transitions, 3572 flow [2023-08-30 12:35:43,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=3510, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3572, PETRI_PLACES=150, PETRI_TRANSITIONS=333} [2023-08-30 12:35:43,342 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2023-08-30 12:35:43,343 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 333 transitions, 3572 flow [2023-08-30 12:35:43,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 166.625) internal successors, (1333), 8 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:43,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:43,343 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:43,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 12:35:43,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:43,549 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:43,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:43,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1778077739, now seen corresponding path program 2 times [2023-08-30 12:35:43,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:43,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165592116] [2023-08-30 12:35:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:43,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 81 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:43,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:43,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165592116] [2023-08-30 12:35:43,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165592116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:43,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570696196] [2023-08-30 12:35:43,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:35:43,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:43,852 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 12:35:43,879 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 12:35:44,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:35:44,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:35:44,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:35:44,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:44,130 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:44,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:35:44,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570696196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:44,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:35:44,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-30 12:35:44,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530596853] [2023-08-30 12:35:44,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:44,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 12:35:44,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:44,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 12:35:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-30 12:35:44,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-08-30 12:35:44,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 333 transitions, 3572 flow. Second operand has 8 states, 8 states have (on average 169.875) internal successors, (1359), 8 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:44,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:44,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-08-30 12:35:44,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:49,710 INFO L130 PetriNetUnfolder]: 25572/47823 cut-off events. [2023-08-30 12:35:49,710 INFO L131 PetriNetUnfolder]: For 108561/108561 co-relation queries the response was YES. [2023-08-30 12:35:49,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162863 conditions, 47823 events. 25572/47823 cut-off events. For 108561/108561 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 394458 event pairs, 150 based on Foata normal form. 638/47063 useless extension candidates. Maximal degree in co-relation 162835. Up to 15143 conditions per place. [2023-08-30 12:35:49,898 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 0 selfloop transitions, 0 changer transitions 1075/1075 dead transitions. [2023-08-30 12:35:49,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 1075 transitions, 12521 flow [2023-08-30 12:35:49,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:35:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:35:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1439 transitions. [2023-08-30 12:35:49,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543429003021148 [2023-08-30 12:35:49,899 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1439 transitions. [2023-08-30 12:35:49,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1439 transitions. [2023-08-30 12:35:49,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:49,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1439 transitions. [2023-08-30 12:35:49,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:49,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:49,903 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:49,903 INFO L175 Difference]: Start difference. First operand has 150 places, 333 transitions, 3572 flow. Second operand 8 states and 1439 transitions. [2023-08-30 12:35:49,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 1075 transitions, 12521 flow [2023-08-30 12:35:50,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 1075 transitions, 12300 flow, removed 63 selfloop flow, removed 5 redundant places. [2023-08-30 12:35:50,162 INFO L231 Difference]: Finished difference. Result has 145 places, 0 transitions, 0 flow [2023-08-30 12:35:50,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=145, PETRI_TRANSITIONS=0} [2023-08-30 12:35:50,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2023-08-30 12:35:50,162 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 0 transitions, 0 flow [2023-08-30 12:35:50,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.875) internal successors, (1359), 8 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:50,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-30 12:35:50,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-08-30 12:35:50,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 12:35:50,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 12:35:50,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 12:35:50,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 12:35:50,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 12:35:50,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 12:35:50,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 12:35:50,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 12:35:50,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 12:35:50,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 12:35:50,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 12:35:50,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 12:35:50,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 12:35:50,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 12:35:50,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 12:35:50,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 12:35:50,173 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 12:35:50,372 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,SelfDestructingSolverStorable20 [2023-08-30 12:35:50,372 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:50,376 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:35:50,376 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:35:50,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:35:50 BasicIcfg [2023-08-30 12:35:50,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:35:50,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:35:50,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:35:50,379 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:35:50,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:35:09" (3/4) ... [2023-08-30 12:35:50,381 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:35:50,385 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-08-30 12:35:50,385 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-08-30 12:35:50,387 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 12:35:50,387 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:35:50,387 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:35:50,387 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:35:50,412 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:35:50,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:35:50,413 INFO L158 Benchmark]: Toolchain (without parser) took 41990.53ms. Allocated memory was 67.1MB in the beginning and 5.9GB in the end (delta: 5.8GB). Free memory was 34.5MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-08-30 12:35:50,413 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory is still 29.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:35:50,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.44ms. Allocated memory is still 67.1MB. Free memory was 34.3MB in the beginning and 36.4MB in the end (delta: -2.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2023-08-30 12:35:50,414 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.26ms. Allocated memory is still 67.1MB. Free memory was 36.4MB in the beginning and 33.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:35:50,414 INFO L158 Benchmark]: Boogie Preprocessor took 50.06ms. Allocated memory is still 67.1MB. Free memory was 33.6MB in the beginning and 31.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:35:50,414 INFO L158 Benchmark]: RCFGBuilder took 543.29ms. Allocated memory is still 67.1MB. Free memory was 31.7MB in the beginning and 28.6MB in the end (delta: 3.1MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2023-08-30 12:35:50,415 INFO L158 Benchmark]: TraceAbstraction took 40645.24ms. Allocated memory was 67.1MB in the beginning and 5.9GB in the end (delta: 5.8GB). Free memory was 27.9MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-08-30 12:35:50,415 INFO L158 Benchmark]: Witness Printer took 33.76ms. Allocated memory is still 5.9GB. Free memory was 4.8GB in the beginning and 4.8GB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:35:50,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory is still 29.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.44ms. Allocated memory is still 67.1MB. Free memory was 34.3MB in the beginning and 36.4MB in the end (delta: -2.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.26ms. Allocated memory is still 67.1MB. Free memory was 36.4MB in the beginning and 33.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.06ms. Allocated memory is still 67.1MB. Free memory was 33.6MB in the beginning and 31.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 543.29ms. Allocated memory is still 67.1MB. Free memory was 31.7MB in the beginning and 28.6MB in the end (delta: 3.1MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * TraceAbstraction took 40645.24ms. Allocated memory was 67.1MB in the beginning and 5.9GB in the end (delta: 5.8GB). Free memory was 27.9MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 33.76ms. Allocated memory is still 5.9GB. Free memory was 4.8GB in the beginning and 4.8GB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 162 PlacesBefore, 42 PlacesAfterwards, 165 TransitionsBefore, 40 TransitionsAfterwards, 9140 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 103 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 155 TotalNumberOfCompositions, 12517 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9577, independent: 9350, independent conditional: 0, independent unconditional: 9350, dependent: 227, dependent conditional: 0, dependent unconditional: 227, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5367, independent: 5317, independent conditional: 0, independent unconditional: 5317, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9577, independent: 4033, independent conditional: 0, independent unconditional: 4033, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 5367, unknown conditional: 0, unknown unconditional: 5367] , Statistics on independence cache: Total cache size (in pairs): 264, Positive cache size: 243, Positive conditional cache size: 0, Positive unconditional cache size: 243, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1007]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1007]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 282 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 40.5s, OverallIterations: 21, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 27.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3803 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3481 mSDsluCounter, 1338 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1231 mSDsCounter, 325 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6871 IncrementalHoareTripleChecker+Invalid, 7196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 325 mSolverCounterUnsat, 107 mSDtfsCounter, 6871 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 838 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5137occurred in iteration=19, InterpolantAutomatonStates: 196, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1046 NumberOfCodeBlocks, 1046 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1220 ConstructedInterpolants, 0 QuantifiedInterpolants, 3674 SizeOfPredicates, 24 NumberOfNonLiveVariables, 4199 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 40 InterpolantComputations, 15 PerfectInterpolantSequences, 518/1299 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:35:50,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE