./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 AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:12:03,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:12:03,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:12:03,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:12:03,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:12:03,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:12:03,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:12:03,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:12:03,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:12:03,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:12:03,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:12:03,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:12:03,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:12:03,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:12:03,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:12:03,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:12:03,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:12:03,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:12:03,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:12:03,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:12:03,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:12:03,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:12:03,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:12:03,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:12:03,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:12:03,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:12:03,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:12:03,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:12:03,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:12:03,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:12:03,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:12:03,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:12:03,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:12:03,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:12:03,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:12:03,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:12:03,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:12:03,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:12:03,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:12:03,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:12:03,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:12:03,631 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:12:03,669 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:12:03,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:12:03,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:12:03,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:12:03,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:12:03,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:12:03,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:12:03,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:12:03,673 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:12:03,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:12:03,674 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:12:03,674 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:12:03,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:12:03,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:12:03,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:12:03,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:12:03,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:12:03,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:12:03,675 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:12:03,675 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:12:03,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:12:03,676 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:12:03,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:12:03,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:12:03,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:12:03,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:12:03,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:12:03,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:12:03,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:12:03,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:12:03,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:12:03,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:12:03,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:12:03,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:12:03,678 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:12:03,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:12:03,679 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:12:03,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:12:03,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:12:03,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:12:03,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:12:03,985 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:12:03,985 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:12:03,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2023-08-30 08:12:05,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:12:05,563 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:12:05,567 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2023-08-30 08:12:05,588 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720408ff4/dab88fd44d48499185419a17f96f3086/FLAG59c00f2c1 [2023-08-30 08:12:05,600 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720408ff4/dab88fd44d48499185419a17f96f3086 [2023-08-30 08:12:05,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:12:05,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:12:05,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:12:05,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:12:05,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:12:05,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:12:05" (1/1) ... [2023-08-30 08:12:05,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7e3cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:05, skipping insertion in model container [2023-08-30 08:12:05,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:12:05" (1/1) ... [2023-08-30 08:12:05,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:12:05,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:12:05,976 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 08:12:06,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:12:06,032 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:12:06,065 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 08:12:06,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:12:06,138 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:12:06,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06 WrapperNode [2023-08-30 08:12:06,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:12:06,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:12:06,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:12:06,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:12:06,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,189 INFO L138 Inliner]: procedures = 277, calls = 44, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 168 [2023-08-30 08:12:06,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:12:06,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:12:06,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:12:06,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:12:06,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,240 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:12:06,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:12:06,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:12:06,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:12:06,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (1/1) ... [2023-08-30 08:12:06,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:12:06,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:06,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 08:12:06,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 08:12:06,322 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 08:12:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 08:12:06,323 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 08:12:06,323 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 08:12:06,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:12:06,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:12:06,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:12:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:12:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 08:12:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:12:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:12:06,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:12:06,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:12:06,325 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 08:12:06,510 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:12:06,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:12:06,745 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:12:06,753 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:12:06,753 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 08:12:06,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:12:06 BoogieIcfgContainer [2023-08-30 08:12:06,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:12:06,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:12:06,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:12:06,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:12:06,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:12:05" (1/3) ... [2023-08-30 08:12:06,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510b8831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:12:06, skipping insertion in model container [2023-08-30 08:12:06,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:12:06" (2/3) ... [2023-08-30 08:12:06,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510b8831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:12:06, skipping insertion in model container [2023-08-30 08:12:06,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:12:06" (3/3) ... [2023-08-30 08:12:06,778 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2023-08-30 08:12:06,785 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:12:06,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:12:06,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 08:12:06,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:12:06,926 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 08:12:06,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 176 transitions, 368 flow [2023-08-30 08:12:07,077 INFO L130 PetriNetUnfolder]: 10/174 cut-off events. [2023-08-30 08:12:07,078 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:12:07,084 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 08:12:07,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 176 transitions, 368 flow [2023-08-30 08:12:07,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 165 transitions, 339 flow [2023-08-30 08:12:07,094 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:12:07,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 165 transitions, 339 flow [2023-08-30 08:12:07,116 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 165 transitions, 339 flow [2023-08-30 08:12:07,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 339 flow [2023-08-30 08:12:07,181 INFO L130 PetriNetUnfolder]: 10/165 cut-off events. [2023-08-30 08:12:07,181 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:12:07,187 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 08:12:07,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 9140 [2023-08-30 08:12:11,025 INFO L134 LiptonReduction]: Checked pairs total: 12517 [2023-08-30 08:12:11,025 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-08-30 08:12:11,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:12:11,049 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;@2b1b7ccf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:12:11,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 08:12:11,055 INFO L130 PetriNetUnfolder]: 1/17 cut-off events. [2023-08-30 08:12:11,055 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:12:11,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:11,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:11,057 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 08:12:11,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:11,063 INFO L85 PathProgramCache]: Analyzing trace with hash -175126251, now seen corresponding path program 1 times [2023-08-30 08:12:11,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:11,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313984771] [2023-08-30 08:12:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:11,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313984771] [2023-08-30 08:12:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313984771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:11,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:11,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:12:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576944473] [2023-08-30 08:12:11,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:11,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:12:11,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:11,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:12:11,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:12:11,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-30 08:12:11,543 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 08:12:11,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:11,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-30 08:12:11,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:11,830 INFO L130 PetriNetUnfolder]: 1406/2275 cut-off events. [2023-08-30 08:12:11,831 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-08-30 08:12:11,833 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 08:12:11,847 INFO L137 encePairwiseOnDemand]: 322/331 looper letters, 65 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-30 08:12:11,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 293 flow [2023-08-30 08:12:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:12:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:12:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-30 08:12:11,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609264853977844 [2023-08-30 08:12:11,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-30 08:12:11,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-30 08:12:11,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:11,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-30 08:12:11,878 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 08:12:11,885 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 08:12:11,886 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 08:12:11,887 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 557 transitions. [2023-08-30 08:12:11,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 293 flow [2023-08-30 08:12:11,893 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 08:12:11,895 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 122 flow [2023-08-30 08:12:11,897 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 08:12:11,900 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-30 08:12:11,900 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 122 flow [2023-08-30 08:12:11,901 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 08:12:11,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:11,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:11,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:12:11,903 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 08:12:11,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:11,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1109344561, now seen corresponding path program 1 times [2023-08-30 08:12:11,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:11,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671282725] [2023-08-30 08:12:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:11,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:12,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:12,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671282725] [2023-08-30 08:12:12,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671282725] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:12,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:12,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:12:12,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270351689] [2023-08-30 08:12:12,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:12,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:12:12,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:12,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:12:12,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:12:12,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-30 08:12:12,035 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 08:12:12,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:12,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-30 08:12:12,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:12,377 INFO L130 PetriNetUnfolder]: 2094/3475 cut-off events. [2023-08-30 08:12:12,377 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2023-08-30 08:12:12,381 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 08:12:12,395 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 74 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 08:12:12,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 371 flow [2023-08-30 08:12:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:12:12,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:12:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-08-30 08:12:12,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599194360523666 [2023-08-30 08:12:12,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-08-30 08:12:12,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-08-30 08:12:12,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:12,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-08-30 08:12:12,400 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 08:12:12,402 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 08:12:12,403 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 08:12:12,403 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 122 flow. Second operand 3 states and 556 transitions. [2023-08-30 08:12:12,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 371 flow [2023-08-30 08:12:12,409 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 08:12:12,411 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 130 flow [2023-08-30 08:12:12,412 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 08:12:12,412 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-30 08:12:12,413 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 130 flow [2023-08-30 08:12:12,413 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 08:12:12,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:12,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:12,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:12:12,415 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 08:12:12,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1551284684, now seen corresponding path program 1 times [2023-08-30 08:12:12,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:12,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183676776] [2023-08-30 08:12:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:12,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:12,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:12,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183676776] [2023-08-30 08:12:12,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183676776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:12,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:12,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:12:12,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248617250] [2023-08-30 08:12:12,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:12,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:12:12,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:12,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:12:12,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:12:12,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-30 08:12:12,549 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 08:12:12,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:12,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-30 08:12:12,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:13,021 INFO L130 PetriNetUnfolder]: 3346/5369 cut-off events. [2023-08-30 08:12:13,021 INFO L131 PetriNetUnfolder]: For 679/679 co-relation queries the response was YES. [2023-08-30 08:12:13,028 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 08:12:13,051 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-30 08:12:13,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 394 flow [2023-08-30 08:12:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:12:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:12:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-08-30 08:12:13,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599194360523666 [2023-08-30 08:12:13,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-08-30 08:12:13,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-08-30 08:12:13,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:13,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-08-30 08:12:13,056 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 08:12:13,058 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 08:12:13,059 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 08:12:13,059 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 130 flow. Second operand 3 states and 556 transitions. [2023-08-30 08:12:13,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 394 flow [2023-08-30 08:12:13,062 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 08:12:13,063 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 144 flow [2023-08-30 08:12:13,063 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 08:12:13,064 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 08:12:13,064 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 144 flow [2023-08-30 08:12:13,064 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 08:12:13,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:13,065 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:13,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:12:13,065 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 08:12:13,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:13,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1398898743, now seen corresponding path program 1 times [2023-08-30 08:12:13,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:13,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318009864] [2023-08-30 08:12:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:13,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:13,124 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 08:12:13,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:13,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318009864] [2023-08-30 08:12:13,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318009864] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:13,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557713908] [2023-08-30 08:12:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:13,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:13,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:13,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:12:13,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 08:12:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:13,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:12:13,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:13,296 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 08:12:13,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:12:13,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557713908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:13,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:12:13,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 08:12:13,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888633952] [2023-08-30 08:12:13,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:13,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:12:13,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:13,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:12:13,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:12:13,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-30 08:12:13,309 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 08:12:13,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:13,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-30 08:12:13,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:13,853 INFO L130 PetriNetUnfolder]: 2912/4835 cut-off events. [2023-08-30 08:12:13,853 INFO L131 PetriNetUnfolder]: For 809/809 co-relation queries the response was YES. [2023-08-30 08:12:13,859 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 08:12:13,884 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 95 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-08-30 08:12:13,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 98 transitions, 504 flow [2023-08-30 08:12:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:12:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:12:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 732 transitions. [2023-08-30 08:12:13,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552870090634441 [2023-08-30 08:12:13,887 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 732 transitions. [2023-08-30 08:12:13,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 732 transitions. [2023-08-30 08:12:13,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:13,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 732 transitions. [2023-08-30 08:12:13,890 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 08:12:13,892 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 08:12:13,893 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 08:12:13,893 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 144 flow. Second operand 4 states and 732 transitions. [2023-08-30 08:12:13,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 98 transitions, 504 flow [2023-08-30 08:12:13,894 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 08:12:13,896 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 142 flow [2023-08-30 08:12:13,896 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 08:12:13,897 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 08:12:13,897 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 142 flow [2023-08-30 08:12:13,897 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 08:12:13,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:13,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:13,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 08:12:14,103 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 08:12:14,103 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 08:12:14,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:14,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1398898774, now seen corresponding path program 1 times [2023-08-30 08:12:14,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:14,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156919095] [2023-08-30 08:12:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:14,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:14,142 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 08:12:14,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:14,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156919095] [2023-08-30 08:12:14,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156919095] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:14,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:14,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:12:14,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380542232] [2023-08-30 08:12:14,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:14,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:12:14,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:14,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:12:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:12:14,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-08-30 08:12:14,151 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 08:12:14,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:14,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-08-30 08:12:14,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:14,490 INFO L130 PetriNetUnfolder]: 2809/4632 cut-off events. [2023-08-30 08:12:14,491 INFO L131 PetriNetUnfolder]: For 881/881 co-relation queries the response was YES. [2023-08-30 08:12:14,498 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 08:12:14,514 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 59 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-30 08:12:14,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 329 flow [2023-08-30 08:12:14,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:12:14,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:12:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2023-08-30 08:12:14,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540785498489426 [2023-08-30 08:12:14,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2023-08-30 08:12:14,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2023-08-30 08:12:14,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:14,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2023-08-30 08:12:14,519 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 08:12:14,521 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 08:12:14,521 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 08:12:14,521 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 142 flow. Second operand 3 states and 537 transitions. [2023-08-30 08:12:14,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 329 flow [2023-08-30 08:12:14,523 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 08:12:14,524 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 151 flow [2023-08-30 08:12:14,524 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 08:12:14,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 08:12:14,525 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 151 flow [2023-08-30 08:12:14,526 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 08:12:14,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:14,526 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:14,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:12:14,527 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 08:12:14,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1784702985, now seen corresponding path program 1 times [2023-08-30 08:12:14,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:14,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005518834] [2023-08-30 08:12:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:14,601 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 08:12:14,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005518834] [2023-08-30 08:12:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005518834] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121378945] [2023-08-30 08:12:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:14,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:14,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:14,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:12:14,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 08:12:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:14,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:12:14,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:14,760 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 08:12:14,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:12:14,803 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 08:12:14,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121378945] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:12:14,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:12:14,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 08:12:14,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742188741] [2023-08-30 08:12:14,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:12:14,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 08:12:14,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:14,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 08:12:14,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 08:12:14,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2023-08-30 08:12:14,861 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 08:12:14,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:14,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2023-08-30 08:12:14,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:15,903 INFO L130 PetriNetUnfolder]: 5222/8549 cut-off events. [2023-08-30 08:12:15,904 INFO L131 PetriNetUnfolder]: For 3764/3764 co-relation queries the response was YES. [2023-08-30 08:12:15,916 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 08:12:15,948 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 248 selfloop transitions, 42 changer transitions 0/291 dead transitions. [2023-08-30 08:12:15,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 291 transitions, 1587 flow [2023-08-30 08:12:15,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 08:12:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 08:12:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2773 transitions. [2023-08-30 08:12:15,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236027190332326 [2023-08-30 08:12:15,958 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2773 transitions. [2023-08-30 08:12:15,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2773 transitions. [2023-08-30 08:12:15,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:15,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2773 transitions. [2023-08-30 08:12:15,964 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 08:12:15,971 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 08:12:15,972 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 08:12:15,972 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 151 flow. Second operand 16 states and 2773 transitions. [2023-08-30 08:12:15,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 291 transitions, 1587 flow [2023-08-30 08:12:15,981 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 08:12:15,983 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 449 flow [2023-08-30 08:12:15,984 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 08:12:15,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-30 08:12:15,984 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 449 flow [2023-08-30 08:12:15,985 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 08:12:15,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:15,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:15,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 08:12:16,190 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 08:12:16,191 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 08:12:16,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:16,191 INFO L85 PathProgramCache]: Analyzing trace with hash -527172851, now seen corresponding path program 1 times [2023-08-30 08:12:16,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:16,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261183323] [2023-08-30 08:12:16,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:16,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:16,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:16,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:16,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261183323] [2023-08-30 08:12:16,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261183323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:16,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:16,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:12:16,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143308362] [2023-08-30 08:12:16,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:16,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:12:16,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:16,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:12:16,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:12:16,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 331 [2023-08-30 08:12:16,280 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 08:12:16,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:16,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 331 [2023-08-30 08:12:16,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:16,534 INFO L130 PetriNetUnfolder]: 1681/3028 cut-off events. [2023-08-30 08:12:16,534 INFO L131 PetriNetUnfolder]: For 2736/2736 co-relation queries the response was YES. [2023-08-30 08:12:16,541 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 08:12:16,551 INFO L137 encePairwiseOnDemand]: 324/331 looper letters, 59 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-08-30 08:12:16,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 463 flow [2023-08-30 08:12:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:12:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:12:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-08-30 08:12:16,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307150050352467 [2023-08-30 08:12:16,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-08-30 08:12:16,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-08-30 08:12:16,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:16,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-08-30 08:12:16,555 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 08:12:16,557 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 08:12:16,557 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 08:12:16,557 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 449 flow. Second operand 3 states and 527 transitions. [2023-08-30 08:12:16,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 463 flow [2023-08-30 08:12:16,572 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 08:12:16,573 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 265 flow [2023-08-30 08:12:16,574 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 08:12:16,574 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-08-30 08:12:16,575 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 265 flow [2023-08-30 08:12:16,575 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 08:12:16,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:16,575 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:16,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:12:16,575 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 08:12:16,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash 507482433, now seen corresponding path program 1 times [2023-08-30 08:12:16,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:16,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984564037] [2023-08-30 08:12:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:16,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:16,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:16,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984564037] [2023-08-30 08:12:16,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984564037] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:16,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682483875] [2023-08-30 08:12:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:16,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:16,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:16,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:12:16,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 08:12:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:16,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:12:16,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:16,798 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 08:12:16,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:12:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682483875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:16,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:12:16,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 08:12:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810218070] [2023-08-30 08:12:16,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:16,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:12:16,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:16,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:12:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:12:16,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2023-08-30 08:12:16,833 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 08:12:16,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:16,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2023-08-30 08:12:16,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:17,183 INFO L130 PetriNetUnfolder]: 1720/3175 cut-off events. [2023-08-30 08:12:17,183 INFO L131 PetriNetUnfolder]: For 2231/2231 co-relation queries the response was YES. [2023-08-30 08:12:17,190 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 08:12:17,201 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 96 selfloop transitions, 18 changer transitions 0/115 dead transitions. [2023-08-30 08:12:17,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 723 flow [2023-08-30 08:12:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:12:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:12:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1038 transitions. [2023-08-30 08:12:17,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226586102719033 [2023-08-30 08:12:17,205 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1038 transitions. [2023-08-30 08:12:17,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1038 transitions. [2023-08-30 08:12:17,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:17,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1038 transitions. [2023-08-30 08:12:17,208 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 08:12:17,211 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 08:12:17,212 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 08:12:17,212 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 265 flow. Second operand 6 states and 1038 transitions. [2023-08-30 08:12:17,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 723 flow [2023-08-30 08:12:17,216 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 08:12:17,218 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 344 flow [2023-08-30 08:12:17,218 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 08:12:17,218 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 08:12:17,219 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 344 flow [2023-08-30 08:12:17,219 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 08:12:17,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:17,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:17,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 08:12:17,424 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 08:12:17,425 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 08:12:17,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:17,426 INFO L85 PathProgramCache]: Analyzing trace with hash -698507269, now seen corresponding path program 1 times [2023-08-30 08:12:17,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:17,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487548836] [2023-08-30 08:12:17,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:17,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:17,462 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 08:12:17,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:17,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487548836] [2023-08-30 08:12:17,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487548836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:17,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:17,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:12:17,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163189710] [2023-08-30 08:12:17,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:17,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:12:17,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:17,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:12:17,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:12:17,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 331 [2023-08-30 08:12:17,491 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 08:12:17,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:17,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 331 [2023-08-30 08:12:17,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:17,866 INFO L130 PetriNetUnfolder]: 2039/3746 cut-off events. [2023-08-30 08:12:17,866 INFO L131 PetriNetUnfolder]: For 3648/3648 co-relation queries the response was YES. [2023-08-30 08:12:17,876 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 08:12:17,889 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 110 selfloop transitions, 6 changer transitions 3/120 dead transitions. [2023-08-30 08:12:17,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 849 flow [2023-08-30 08:12:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:12:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:12:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 881 transitions. [2023-08-30 08:12:17,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323262839879154 [2023-08-30 08:12:17,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 881 transitions. [2023-08-30 08:12:17,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 881 transitions. [2023-08-30 08:12:17,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:17,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 881 transitions. [2023-08-30 08:12:17,895 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 08:12:17,897 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 08:12:17,899 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 08:12:17,899 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 344 flow. Second operand 5 states and 881 transitions. [2023-08-30 08:12:17,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 849 flow [2023-08-30 08:12:17,909 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 08:12:17,912 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 367 flow [2023-08-30 08:12:17,912 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 08:12:17,913 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-30 08:12:17,913 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 367 flow [2023-08-30 08:12:17,914 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 08:12:17,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:17,914 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:12:17,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:12:17,914 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 08:12:17,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:17,915 INFO L85 PathProgramCache]: Analyzing trace with hash 124965910, now seen corresponding path program 1 times [2023-08-30 08:12:17,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:17,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545056296] [2023-08-30 08:12:17,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:17,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:17,983 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 08:12:17,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:17,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545056296] [2023-08-30 08:12:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545056296] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:17,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:17,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:12:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12970136] [2023-08-30 08:12:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:17,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:12:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:12:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:12:17,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-08-30 08:12:17,993 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 08:12:17,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:17,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-08-30 08:12:17,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:18,289 INFO L130 PetriNetUnfolder]: 1831/3354 cut-off events. [2023-08-30 08:12:18,290 INFO L131 PetriNetUnfolder]: For 3650/3656 co-relation queries the response was YES. [2023-08-30 08:12:18,301 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 08:12:18,313 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 81 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-30 08:12:18,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 693 flow [2023-08-30 08:12:18,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:12:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:12:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-30 08:12:18,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5397784491440081 [2023-08-30 08:12:18,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-30 08:12:18,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-30 08:12:18,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:18,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-30 08:12:18,318 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 08:12:18,319 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 08:12:18,320 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 08:12:18,320 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 367 flow. Second operand 3 states and 536 transitions. [2023-08-30 08:12:18,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 693 flow [2023-08-30 08:12:18,329 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 08:12:18,331 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 373 flow [2023-08-30 08:12:18,331 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 08:12:18,332 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-08-30 08:12:18,332 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 373 flow [2023-08-30 08:12:18,332 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 08:12:18,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:18,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:12:18,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:12:18,333 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 08:12:18,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash 124965909, now seen corresponding path program 1 times [2023-08-30 08:12:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:18,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501621848] [2023-08-30 08:12:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:18,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:18,391 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 08:12:18,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501621848] [2023-08-30 08:12:18,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501621848] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010880915] [2023-08-30 08:12:18,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:18,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:18,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:18,397 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:12:18,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 08:12:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:18,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:12:18,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:18,540 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 08:12:18,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:12:18,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010880915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:18,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:12:18,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 08:12:18,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382503377] [2023-08-30 08:12:18,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:18,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:12:18,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:18,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:12:18,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:12:18,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-30 08:12:18,551 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 08:12:18,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:18,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-30 08:12:18,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:18,886 INFO L130 PetriNetUnfolder]: 1713/3084 cut-off events. [2023-08-30 08:12:18,886 INFO L131 PetriNetUnfolder]: For 3701/3719 co-relation queries the response was YES. [2023-08-30 08:12:18,893 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 08:12:18,901 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 88 selfloop transitions, 2 changer transitions 2/93 dead transitions. [2023-08-30 08:12:18,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 703 flow [2023-08-30 08:12:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:12:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:12:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 712 transitions. [2023-08-30 08:12:18,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377643504531722 [2023-08-30 08:12:18,904 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 712 transitions. [2023-08-30 08:12:18,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 712 transitions. [2023-08-30 08:12:18,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:18,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 712 transitions. [2023-08-30 08:12:18,906 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 08:12:18,908 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 08:12:18,909 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 08:12:18,909 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 373 flow. Second operand 4 states and 712 transitions. [2023-08-30 08:12:18,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 703 flow [2023-08-30 08:12:18,917 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 08:12:18,918 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 368 flow [2023-08-30 08:12:18,918 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 08:12:18,919 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-08-30 08:12:18,919 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 368 flow [2023-08-30 08:12:18,920 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 08:12:18,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:18,920 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 08:12:18,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 08:12:19,125 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 08:12:19,126 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 08:12:19,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:19,127 INFO L85 PathProgramCache]: Analyzing trace with hash 350299545, now seen corresponding path program 1 times [2023-08-30 08:12:19,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:19,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292605742] [2023-08-30 08:12:19,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:19,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:19,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:19,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292605742] [2023-08-30 08:12:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292605742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:19,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394316286] [2023-08-30 08:12:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:19,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:19,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:19,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:12:19,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 08:12:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:19,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:12:19,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:19,424 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 08:12:19,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:12:19,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394316286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:19,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:12:19,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 08:12:19,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816644781] [2023-08-30 08:12:19,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:19,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:12:19,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:12:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:12:19,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-30 08:12:19,477 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 08:12:19,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:19,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-30 08:12:19,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:19,955 INFO L130 PetriNetUnfolder]: 2042/3657 cut-off events. [2023-08-30 08:12:19,956 INFO L131 PetriNetUnfolder]: For 4683/4683 co-relation queries the response was YES. [2023-08-30 08:12:19,970 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 08:12:19,985 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 109 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2023-08-30 08:12:19,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 131 transitions, 947 flow [2023-08-30 08:12:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:12:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:12:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1165 transitions. [2023-08-30 08:12:19,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028053517479499 [2023-08-30 08:12:19,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1165 transitions. [2023-08-30 08:12:19,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1165 transitions. [2023-08-30 08:12:19,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:19,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1165 transitions. [2023-08-30 08:12:19,993 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 08:12:19,996 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 08:12:19,997 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 08:12:19,997 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 368 flow. Second operand 7 states and 1165 transitions. [2023-08-30 08:12:19,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 131 transitions, 947 flow [2023-08-30 08:12:20,007 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 08:12:20,009 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 547 flow [2023-08-30 08:12:20,009 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 08:12:20,011 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2023-08-30 08:12:20,011 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 547 flow [2023-08-30 08:12:20,012 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 08:12:20,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:20,012 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 08:12:20,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 08:12:20,217 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 08:12:20,218 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 08:12:20,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:20,219 INFO L85 PathProgramCache]: Analyzing trace with hash -770938367, now seen corresponding path program 1 times [2023-08-30 08:12:20,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:20,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614523134] [2023-08-30 08:12:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:20,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:12:20,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:20,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614523134] [2023-08-30 08:12:20,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614523134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:20,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993569392] [2023-08-30 08:12:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:20,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:20,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:20,347 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:12:20,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 08:12:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:20,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:12:20,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:20,519 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 08:12:20,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:12:20,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993569392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:20,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:12:20,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 08:12:20,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339348850] [2023-08-30 08:12:20,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:20,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:12:20,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:20,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:12:20,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:12:20,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-30 08:12:20,577 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 08:12:20,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:20,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-30 08:12:20,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:21,225 INFO L130 PetriNetUnfolder]: 2554/4555 cut-off events. [2023-08-30 08:12:21,225 INFO L131 PetriNetUnfolder]: For 7165/7165 co-relation queries the response was YES. [2023-08-30 08:12:21,246 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 08:12:21,266 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 110 selfloop transitions, 39 changer transitions 0/150 dead transitions. [2023-08-30 08:12:21,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 150 transitions, 1308 flow [2023-08-30 08:12:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:12:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:12:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1164 transitions. [2023-08-30 08:12:21,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023737591713423 [2023-08-30 08:12:21,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1164 transitions. [2023-08-30 08:12:21,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1164 transitions. [2023-08-30 08:12:21,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:21,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1164 transitions. [2023-08-30 08:12:21,274 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 08:12:21,277 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 08:12:21,278 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 08:12:21,278 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 547 flow. Second operand 7 states and 1164 transitions. [2023-08-30 08:12:21,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 150 transitions, 1308 flow [2023-08-30 08:12:21,294 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 08:12:21,297 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 946 flow [2023-08-30 08:12:21,297 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 08:12:21,298 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-30 08:12:21,298 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 946 flow [2023-08-30 08:12:21,298 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 08:12:21,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:21,299 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 08:12:21,309 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 08:12:21,509 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 08:12:21,509 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 08:12:21,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:21,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1836905027, now seen corresponding path program 1 times [2023-08-30 08:12:21,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:21,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50859962] [2023-08-30 08:12:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:21,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:21,704 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 08:12:21,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:21,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50859962] [2023-08-30 08:12:21,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50859962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:21,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439997197] [2023-08-30 08:12:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:21,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:21,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:21,709 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:12:21,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 08:12:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:21,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:12:21,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:21,896 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 08:12:21,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:12:21,994 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 08:12:21,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439997197] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:12:21,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:12:21,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 08:12:21,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705481270] [2023-08-30 08:12:21,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:12:21,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 08:12:21,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 08:12:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 08:12:22,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2023-08-30 08:12:22,095 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 08:12:22,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:22,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2023-08-30 08:12:22,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:23,285 INFO L130 PetriNetUnfolder]: 4444/7925 cut-off events. [2023-08-30 08:12:23,285 INFO L131 PetriNetUnfolder]: For 17777/17777 co-relation queries the response was YES. [2023-08-30 08:12:23,318 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 08:12:23,349 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 302 selfloop transitions, 42 changer transitions 3/348 dead transitions. [2023-08-30 08:12:23,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 348 transitions, 2829 flow [2023-08-30 08:12:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:12:23,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:12:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3245 transitions. [2023-08-30 08:12:23,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159802830338687 [2023-08-30 08:12:23,356 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3245 transitions. [2023-08-30 08:12:23,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3245 transitions. [2023-08-30 08:12:23,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:23,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3245 transitions. [2023-08-30 08:12:23,364 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 08:12:23,372 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 08:12:23,372 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 08:12:23,373 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 946 flow. Second operand 19 states and 3245 transitions. [2023-08-30 08:12:23,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 348 transitions, 2829 flow [2023-08-30 08:12:23,405 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 08:12:23,409 INFO L231 Difference]: Finished difference. Result has 113 places, 111 transitions, 1269 flow [2023-08-30 08:12:23,409 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 08:12:23,409 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-08-30 08:12:23,410 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 111 transitions, 1269 flow [2023-08-30 08:12:23,410 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 08:12:23,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:23,411 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 08:12:23,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 08:12:23,622 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 08:12:23,622 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 08:12:23,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:23,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1957238620, now seen corresponding path program 1 times [2023-08-30 08:12:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:23,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396365078] [2023-08-30 08:12:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:23,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:23,754 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 08:12:23,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:23,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396365078] [2023-08-30 08:12:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396365078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:23,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:12:23,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:12:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099248425] [2023-08-30 08:12:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:23,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:12:23,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:12:23,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:12:23,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 331 [2023-08-30 08:12:23,787 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 08:12:23,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:23,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 331 [2023-08-30 08:12:23,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:24,628 INFO L130 PetriNetUnfolder]: 4308/7765 cut-off events. [2023-08-30 08:12:24,629 INFO L131 PetriNetUnfolder]: For 18792/18792 co-relation queries the response was YES. [2023-08-30 08:12:24,662 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 08:12:24,689 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 107 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2023-08-30 08:12:24,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1426 flow [2023-08-30 08:12:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:12:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:12:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 667 transitions. [2023-08-30 08:12:24,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037764350453172 [2023-08-30 08:12:24,692 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 667 transitions. [2023-08-30 08:12:24,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 667 transitions. [2023-08-30 08:12:24,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:24,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 667 transitions. [2023-08-30 08:12:24,694 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 08:12:24,696 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 08:12:24,696 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 08:12:24,696 INFO L175 Difference]: Start difference. First operand has 113 places, 111 transitions, 1269 flow. Second operand 4 states and 667 transitions. [2023-08-30 08:12:24,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1426 flow [2023-08-30 08:12:24,750 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 08:12:24,752 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 1108 flow [2023-08-30 08:12:24,752 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 08:12:24,752 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2023-08-30 08:12:24,752 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 1108 flow [2023-08-30 08:12:24,753 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 08:12:24,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:24,753 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 08:12:24,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 08:12:24,753 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 08:12:24,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:24,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1935694427, now seen corresponding path program 2 times [2023-08-30 08:12:24,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:24,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775669345] [2023-08-30 08:12:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:24,881 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 08:12:24,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:24,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775669345] [2023-08-30 08:12:24,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775669345] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:24,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861411047] [2023-08-30 08:12:24,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:12:24,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:24,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:24,885 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:12:24,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 08:12:25,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:12:25,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:12:25,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:12:25,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:25,083 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 08:12:25,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:12:25,179 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 08:12:25,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861411047] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:12:25,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:12:25,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 08:12:25,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119815326] [2023-08-30 08:12:25,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:12:25,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 08:12:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:25,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 08:12:25,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-30 08:12:25,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 331 [2023-08-30 08:12:25,314 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 08:12:25,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:25,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 331 [2023-08-30 08:12:25,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:26,579 INFO L130 PetriNetUnfolder]: 5617/10008 cut-off events. [2023-08-30 08:12:26,579 INFO L131 PetriNetUnfolder]: For 20858/20858 co-relation queries the response was YES. [2023-08-30 08:12:26,625 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 08:12:26,659 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 217 selfloop transitions, 99 changer transitions 3/320 dead transitions. [2023-08-30 08:12:26,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 320 transitions, 2888 flow [2023-08-30 08:12:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 08:12:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 08:12:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3223 transitions. [2023-08-30 08:12:26,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48685800604229607 [2023-08-30 08:12:26,666 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3223 transitions. [2023-08-30 08:12:26,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3223 transitions. [2023-08-30 08:12:26,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:26,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3223 transitions. [2023-08-30 08:12:26,674 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 08:12:26,681 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 08:12:26,683 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 08:12:26,683 INFO L175 Difference]: Start difference. First operand has 110 places, 107 transitions, 1108 flow. Second operand 20 states and 3223 transitions. [2023-08-30 08:12:26,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 320 transitions, 2888 flow [2023-08-30 08:12:26,745 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 08:12:26,749 INFO L231 Difference]: Finished difference. Result has 130 places, 147 transitions, 1899 flow [2023-08-30 08:12:26,749 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 08:12:26,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2023-08-30 08:12:26,750 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 147 transitions, 1899 flow [2023-08-30 08:12:26,750 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 08:12:26,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:26,751 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 08:12:26,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 08:12:26,965 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 08:12:26,966 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 08:12:26,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1252909443, now seen corresponding path program 1 times [2023-08-30 08:12:26,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:26,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064301427] [2023-08-30 08:12:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:26,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:27,121 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 08:12:27,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:27,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064301427] [2023-08-30 08:12:27,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064301427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:27,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792265737] [2023-08-30 08:12:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:27,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:27,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:27,125 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:12:27,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 08:12:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:27,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:12:27,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:27,318 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 08:12:27,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:12:27,419 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 08:12:27,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792265737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:12:27,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:12:27,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-08-30 08:12:27,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695529698] [2023-08-30 08:12:27,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:12:27,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 08:12:27,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:27,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 08:12:27,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-30 08:12:27,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 331 [2023-08-30 08:12:27,519 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 08:12:27,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:27,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 331 [2023-08-30 08:12:27,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:29,043 INFO L130 PetriNetUnfolder]: 6026/10771 cut-off events. [2023-08-30 08:12:29,043 INFO L131 PetriNetUnfolder]: For 27006/27006 co-relation queries the response was YES. [2023-08-30 08:12:29,078 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 08:12:29,103 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 168 selfloop transitions, 122 changer transitions 3/294 dead transitions. [2023-08-30 08:12:29,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 294 transitions, 3133 flow [2023-08-30 08:12:29,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:12:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:12:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3040 transitions. [2023-08-30 08:12:29,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48338368580060426 [2023-08-30 08:12:29,108 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3040 transitions. [2023-08-30 08:12:29,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3040 transitions. [2023-08-30 08:12:29,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:29,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3040 transitions. [2023-08-30 08:12:29,114 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 08:12:29,121 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 08:12:29,122 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 08:12:29,123 INFO L175 Difference]: Start difference. First operand has 130 places, 147 transitions, 1899 flow. Second operand 19 states and 3040 transitions. [2023-08-30 08:12:29,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 294 transitions, 3133 flow [2023-08-30 08:12:29,201 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 08:12:29,205 INFO L231 Difference]: Finished difference. Result has 138 places, 162 transitions, 2079 flow [2023-08-30 08:12:29,205 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 08:12:29,205 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2023-08-30 08:12:29,205 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 162 transitions, 2079 flow [2023-08-30 08:12:29,206 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 08:12:29,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:29,207 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 08:12:29,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 08:12:29,411 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 08:12:29,412 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 08:12:29,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:29,412 INFO L85 PathProgramCache]: Analyzing trace with hash 650444663, now seen corresponding path program 1 times [2023-08-30 08:12:29,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:29,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7099110] [2023-08-30 08:12:29,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:29,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:29,715 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 08:12:29,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:29,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7099110] [2023-08-30 08:12:29,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7099110] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:29,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586375692] [2023-08-30 08:12:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:29,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:29,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:29,718 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 08:12:29,721 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 08:12:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:29,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 08:12:29,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:29,936 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 08:12:29,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:12:30,087 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 08:12:30,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586375692] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:12:30,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:12:30,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-08-30 08:12:30,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015966087] [2023-08-30 08:12:30,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:12:30,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 08:12:30,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:30,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 08:12:30,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-08-30 08:12:30,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-30 08:12:30,187 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 08:12:30,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:30,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-30 08:12:30,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:32,138 INFO L130 PetriNetUnfolder]: 7934/14173 cut-off events. [2023-08-30 08:12:32,139 INFO L131 PetriNetUnfolder]: For 36501/36501 co-relation queries the response was YES. [2023-08-30 08:12:32,198 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 08:12:32,233 INFO L137 encePairwiseOnDemand]: 322/331 looper letters, 274 selfloop transitions, 180 changer transitions 3/458 dead transitions. [2023-08-30 08:12:32,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 458 transitions, 4902 flow [2023-08-30 08:12:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 08:12:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 08:12:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4070 transitions. [2023-08-30 08:12:32,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918429003021148 [2023-08-30 08:12:32,239 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4070 transitions. [2023-08-30 08:12:32,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4070 transitions. [2023-08-30 08:12:32,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:32,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4070 transitions. [2023-08-30 08:12:32,246 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 08:12:32,255 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 08:12:32,257 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 08:12:32,257 INFO L175 Difference]: Start difference. First operand has 138 places, 162 transitions, 2079 flow. Second operand 25 states and 4070 transitions. [2023-08-30 08:12:32,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 458 transitions, 4902 flow [2023-08-30 08:12:32,369 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 08:12:32,374 INFO L231 Difference]: Finished difference. Result has 152 places, 239 transitions, 2798 flow [2023-08-30 08:12:32,374 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 08:12:32,375 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2023-08-30 08:12:32,375 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 239 transitions, 2798 flow [2023-08-30 08:12:32,376 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 08:12:32,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:32,376 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 08:12:32,382 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 08:12:32,581 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 08:12:32,581 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 08:12:32,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1592052127, now seen corresponding path program 3 times [2023-08-30 08:12:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:32,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672500054] [2023-08-30 08:12:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:32,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:32,886 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 08:12:32,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:32,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672500054] [2023-08-30 08:12:32,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672500054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:32,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576389167] [2023-08-30 08:12:32,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:12:32,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:32,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:32,888 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 08:12:32,891 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 08:12:33,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 08:12:33,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:12:33,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 08:12:33,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:33,245 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 08:12:33,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:12:33,356 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 08:12:33,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576389167] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:12:33,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:12:33,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-30 08:12:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278692365] [2023-08-30 08:12:33,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:12:33,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 08:12:33,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 08:12:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-08-30 08:12:33,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 331 [2023-08-30 08:12:33,475 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 08:12:33,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:33,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 331 [2023-08-30 08:12:33,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:36,219 INFO L130 PetriNetUnfolder]: 11210/20015 cut-off events. [2023-08-30 08:12:36,219 INFO L131 PetriNetUnfolder]: For 46104/46104 co-relation queries the response was YES. [2023-08-30 08:12:36,304 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 08:12:36,517 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 340 selfloop transitions, 301 changer transitions 3/645 dead transitions. [2023-08-30 08:12:36,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 645 transitions, 6745 flow [2023-08-30 08:12:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-30 08:12:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-30 08:12:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4164 transitions. [2023-08-30 08:12:36,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48384847780618173 [2023-08-30 08:12:36,523 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4164 transitions. [2023-08-30 08:12:36,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4164 transitions. [2023-08-30 08:12:36,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:36,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4164 transitions. [2023-08-30 08:12:36,530 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 08:12:36,539 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 08:12:36,540 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 08:12:36,541 INFO L175 Difference]: Start difference. First operand has 152 places, 239 transitions, 2798 flow. Second operand 26 states and 4164 transitions. [2023-08-30 08:12:36,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 645 transitions, 6745 flow [2023-08-30 08:12:36,753 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 08:12:36,759 INFO L231 Difference]: Finished difference. Result has 172 places, 382 transitions, 5137 flow [2023-08-30 08:12:36,759 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 08:12:36,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-08-30 08:12:36,759 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 382 transitions, 5137 flow [2023-08-30 08:12:36,760 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 08:12:36,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:36,760 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-08-30 08:12:36,767 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 08:12:36,966 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 08:12:36,967 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 08:12:36,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:36,967 INFO L85 PathProgramCache]: Analyzing trace with hash -18560069, now seen corresponding path program 2 times [2023-08-30 08:12:36,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:36,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342831216] [2023-08-30 08:12:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:36,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:37,447 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 08:12:37,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342831216] [2023-08-30 08:12:37,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342831216] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931586107] [2023-08-30 08:12:37,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:12:37,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:37,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:37,450 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 08:12:37,453 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 08:12:37,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:12:37,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:12:37,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:12:37,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:37,755 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 08:12:37,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:12:37,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931586107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:37,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:12:37,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 23 [2023-08-30 08:12:37,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995795097] [2023-08-30 08:12:37,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:37,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 08:12:37,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:37,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 08:12:37,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-08-30 08:12:37,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-08-30 08:12:37,774 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 08:12:37,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:37,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-08-30 08:12:37,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:42,038 INFO L130 PetriNetUnfolder]: 16675/29008 cut-off events. [2023-08-30 08:12:42,039 INFO L131 PetriNetUnfolder]: For 66609/66627 co-relation queries the response was YES. [2023-08-30 08:12:42,257 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 08:12:42,323 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 902 selfloop transitions, 10 changer transitions 9/922 dead transitions. [2023-08-30 08:12:42,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 922 transitions, 13602 flow [2023-08-30 08:12:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:12:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:12:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1442 transitions. [2023-08-30 08:12:42,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445619335347432 [2023-08-30 08:12:42,325 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1442 transitions. [2023-08-30 08:12:42,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1442 transitions. [2023-08-30 08:12:42,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:42,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1442 transitions. [2023-08-30 08:12:42,326 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 08:12:42,327 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 08:12:42,328 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 08:12:42,328 INFO L175 Difference]: Start difference. First operand has 172 places, 382 transitions, 5137 flow. Second operand 8 states and 1442 transitions. [2023-08-30 08:12:42,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 922 transitions, 13602 flow [2023-08-30 08:12:42,814 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 08:12:42,820 INFO L231 Difference]: Finished difference. Result has 150 places, 333 transitions, 3572 flow [2023-08-30 08:12:42,821 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 08:12:42,821 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2023-08-30 08:12:42,821 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 333 transitions, 3572 flow [2023-08-30 08:12:42,822 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 08:12:42,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:12:42,822 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 08:12:42,827 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 08:12:43,022 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 08:12:43,022 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 08:12:43,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:12:43,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1778077739, now seen corresponding path program 2 times [2023-08-30 08:12:43,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:12:43,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730176310] [2023-08-30 08:12:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:12:43,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:12:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:12:43,222 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 08:12:43,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:12:43,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730176310] [2023-08-30 08:12:43,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730176310] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:12:43,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635086758] [2023-08-30 08:12:43,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:12:43,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:43,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:12:43,224 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 08:12:43,244 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 08:12:43,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:12:43,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:12:43,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:12:43,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:12:43,513 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 08:12:43,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:12:43,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635086758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:12:43,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:12:43,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-30 08:12:43,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711231041] [2023-08-30 08:12:43,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:12:43,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 08:12:43,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:12:43,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 08:12:43,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-30 08:12:43,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-08-30 08:12:43,529 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 08:12:43,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:12:43,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-08-30 08:12:43,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:49,140 INFO L130 PetriNetUnfolder]: 25572/47823 cut-off events. [2023-08-30 08:12:49,140 INFO L131 PetriNetUnfolder]: For 108561/108561 co-relation queries the response was YES. [2023-08-30 08:12:49,407 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 08:12:49,439 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 0 selfloop transitions, 0 changer transitions 1075/1075 dead transitions. [2023-08-30 08:12:49,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 1075 transitions, 12521 flow [2023-08-30 08:12:49,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:12:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:12:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1439 transitions. [2023-08-30 08:12:49,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543429003021148 [2023-08-30 08:12:49,441 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1439 transitions. [2023-08-30 08:12:49,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1439 transitions. [2023-08-30 08:12:49,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:49,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1439 transitions. [2023-08-30 08:12:49,443 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 08:12:49,444 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 08:12:49,445 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 08:12:49,445 INFO L175 Difference]: Start difference. First operand has 150 places, 333 transitions, 3572 flow. Second operand 8 states and 1439 transitions. [2023-08-30 08:12:49,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 1075 transitions, 12521 flow [2023-08-30 08:12:49,888 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 08:12:49,893 INFO L231 Difference]: Finished difference. Result has 145 places, 0 transitions, 0 flow [2023-08-30 08:12:49,894 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 08:12:49,894 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2023-08-30 08:12:49,894 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 0 transitions, 0 flow [2023-08-30 08:12:49,894 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 08:12:49,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-30 08:12:49,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-08-30 08:12:49,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 08:12:49,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 08:12:49,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 08:12:49,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 08:12:49,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 08:12:49,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 08:12:49,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 08:12:49,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 08:12:49,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 08:12:49,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 08:12:49,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 08:12:49,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 08:12:49,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 08:12:49,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 08:12:49,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 08:12:49,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 08:12:49,912 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 08:12:50,105 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 08:12:50,106 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 08:12:50,111 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 08:12:50,111 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 08:12:50,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 08:12:50 BasicIcfg [2023-08-30 08:12:50,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 08:12:50,114 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 08:12:50,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 08:12:50,115 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 08:12:50,115 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:12:06" (3/4) ... [2023-08-30 08:12:50,118 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 08:12:50,124 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-08-30 08:12:50,124 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-08-30 08:12:50,128 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 08:12:50,128 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 08:12:50,128 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 08:12:50,128 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 08:12:50,163 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 08:12:50,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 08:12:50,164 INFO L158 Benchmark]: Toolchain (without parser) took 44559.72ms. Allocated memory was 67.1MB in the beginning and 8.1GB in the end (delta: 8.1GB). Free memory was 31.0MB in the beginning and 7.1GB in the end (delta: -7.1GB). Peak memory consumption was 963.7MB. Max. memory is 16.1GB. [2023-08-30 08:12:50,164 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 08:12:50,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.14ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 30.8MB in the beginning and 49.3MB in the end (delta: -18.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2023-08-30 08:12:50,166 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.85ms. Allocated memory is still 81.8MB. Free memory was 49.3MB in the beginning and 46.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 08:12:50,167 INFO L158 Benchmark]: Boogie Preprocessor took 53.79ms. Allocated memory is still 81.8MB. Free memory was 46.5MB in the beginning and 44.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:12:50,167 INFO L158 Benchmark]: RCFGBuilder took 510.75ms. Allocated memory is still 81.8MB. Free memory was 44.8MB in the beginning and 49.7MB in the end (delta: -4.9MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-08-30 08:12:50,168 INFO L158 Benchmark]: TraceAbstraction took 43356.82ms. Allocated memory was 81.8MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 48.8MB in the beginning and 7.1GB in the end (delta: -7.1GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-08-30 08:12:50,168 INFO L158 Benchmark]: Witness Printer took 48.57ms. Allocated memory is still 8.1GB. Free memory was 7.1GB in the beginning and 7.1GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:12:50,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.14ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 30.8MB in the beginning and 49.3MB in the end (delta: -18.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.85ms. Allocated memory is still 81.8MB. Free memory was 49.3MB in the beginning and 46.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.79ms. Allocated memory is still 81.8MB. Free memory was 46.5MB in the beginning and 44.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 510.75ms. Allocated memory is still 81.8MB. Free memory was 44.8MB in the beginning and 49.7MB in the end (delta: -4.9MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 43356.82ms. Allocated memory was 81.8MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 48.8MB in the beginning and 7.1GB in the end (delta: -7.1GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 48.57ms. Allocated memory is still 8.1GB. Free memory was 7.1GB in the beginning and 7.1GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 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: 43.1s, OverallIterations: 21, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 29.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3803 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3481 mSDsluCounter, 1338 SdHoareTripleChecker+Invalid, 3.4s 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, 1.3s 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, 1.0s 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 08:12:50,187 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