./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.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 cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --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 10:05:48,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:05:48,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:05:48,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:05:48,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:05:48,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:05:48,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:05:48,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:05:48,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:05:48,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:05:48,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:05:48,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:05:48,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:05:48,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:05:48,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:05:48,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:05:48,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:05:48,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:05:48,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:05:48,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:05:48,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:05:48,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:05:48,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:05:48,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:05:48,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:05:48,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:05:48,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:05:48,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:05:48,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:05:48,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:05:48,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:05:48,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:05:48,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:05:48,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:05:48,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:05:48,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:05:48,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:05:48,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:05:48,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:05:48,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:05:48,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:05:48,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:05:48,656 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:05:48,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:05:48,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:05:48,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:05:48,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:05:48,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:05:48,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:05:48,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:05:48,659 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:05:48,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:05:48,659 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:05:48,660 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:05:48,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:05:48,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:05:48,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:05:48,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:05:48,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:05:48,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:05:48,661 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:05:48,661 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:05:48,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:05:48,661 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:05:48,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:05:48,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:05:48,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:05:48,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:05:48,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:05:48,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:05:48,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:05:48,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:05:48,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:05:48,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:05:48,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:05:48,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:05:48,663 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:05:48,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:05:48,663 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:05:48,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:05:48,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:05:48,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:05:48,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:05:48,931 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:05:48,931 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:05:48,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-08-30 10:05:49,936 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:05:50,183 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:05:50,184 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-08-30 10:05:50,199 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5de29d791/b7ff24aa1a9e498fb8a5afbec9becf3d/FLAG751e707d8 [2023-08-30 10:05:50,209 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5de29d791/b7ff24aa1a9e498fb8a5afbec9becf3d [2023-08-30 10:05:50,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:05:50,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:05:50,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:05:50,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:05:50,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:05:50,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798433c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50, skipping insertion in model container [2023-08-30 10:05:50,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:05:50,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:05:50,462 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2023-08-30 10:05:50,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:05:50,484 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:05:50,519 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2023-08-30 10:05:50,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:05:50,619 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:05:50,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50 WrapperNode [2023-08-30 10:05:50,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:05:50,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:05:50,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:05:50,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:05:50,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,670 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-08-30 10:05:50,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:05:50,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:05:50,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:05:50,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:05:50,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,698 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:05:50,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:05:50,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:05:50,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:05:50,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (1/1) ... [2023-08-30 10:05:50,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:05:50,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:05:50,741 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 10:05:50,746 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 10:05:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:05:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:05:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:05:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:05:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:05:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:05:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:05:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:05:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:05:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:05:50,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:05:50,767 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 10:05:50,881 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:05:50,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:05:51,095 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:05:51,100 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:05:51,101 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-30 10:05:51,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:05:51 BoogieIcfgContainer [2023-08-30 10:05:51,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:05:51,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:05:51,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:05:51,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:05:51,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:05:50" (1/3) ... [2023-08-30 10:05:51,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361b03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:05:51, skipping insertion in model container [2023-08-30 10:05:51,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:05:50" (2/3) ... [2023-08-30 10:05:51,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361b03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:05:51, skipping insertion in model container [2023-08-30 10:05:51,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:05:51" (3/3) ... [2023-08-30 10:05:51,108 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-08-30 10:05:51,113 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:05:51,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:05:51,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 10:05:51,119 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:05:51,163 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 10:05:51,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:51,242 INFO L130 PetriNetUnfolder]: 14/135 cut-off events. [2023-08-30 10:05:51,242 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:05:51,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 14/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 310 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-30 10:05:51,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:51,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:51,252 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:05:51,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:51,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:51,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:51,275 INFO L130 PetriNetUnfolder]: 14/135 cut-off events. [2023-08-30 10:05:51,275 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:05:51,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 14/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 310 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-30 10:05:51,277 INFO L119 LiptonReduction]: Number of co-enabled transitions 2960 [2023-08-30 10:05:53,705 INFO L134 LiptonReduction]: Checked pairs total: 5503 [2023-08-30 10:05:53,705 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-30 10:05:53,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:05:53,718 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;@76e9fe84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:05:53,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-30 10:05:53,721 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2023-08-30 10:05:53,721 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:05:53,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:53,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:05:53,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-30 10:05:53,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:53,725 INFO L85 PathProgramCache]: Analyzing trace with hash 13231113, now seen corresponding path program 1 times [2023-08-30 10:05:53,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:53,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823666478] [2023-08-30 10:05:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:53,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:53,901 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 10:05:53,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:53,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823666478] [2023-08-30 10:05:53,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823666478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:53,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:05:53,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:05:53,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813479203] [2023-08-30 10:05:53,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:53,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:05:53,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:53,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:05:53,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:05:53,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 209 [2023-08-30 10:05:53,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 34 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:53,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:53,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 209 [2023-08-30 10:05:53,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:54,001 INFO L130 PetriNetUnfolder]: 78/194 cut-off events. [2023-08-30 10:05:54,001 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:05:54,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 194 events. 78/194 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 878 event pairs, 0 based on Foata normal form. 14/166 useless extension candidates. Maximal degree in co-relation 352. Up to 163 conditions per place. [2023-08-30 10:05:54,003 INFO L137 encePairwiseOnDemand]: 196/209 looper letters, 25 selfloop transitions, 2 changer transitions 8/38 dead transitions. [2023-08-30 10:05:54,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 38 transitions, 151 flow [2023-08-30 10:05:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:05:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:05:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-30 10:05:54,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231259968102073 [2023-08-30 10:05:54,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-30 10:05:54,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-30 10:05:54,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:54,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-30 10:05:54,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,030 INFO L175 Difference]: Start difference. First operand has 29 places, 34 transitions, 73 flow. Second operand 3 states and 328 transitions. [2023-08-30 10:05:54,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 38 transitions, 151 flow [2023-08-30 10:05:54,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 151 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:05:54,038 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 53 flow [2023-08-30 10:05:54,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-08-30 10:05:54,041 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-08-30 10:05:54,041 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 53 flow [2023-08-30 10:05:54,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:54,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:05:54,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:05:54,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-30 10:05:54,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:54,043 INFO L85 PathProgramCache]: Analyzing trace with hash -968818781, now seen corresponding path program 1 times [2023-08-30 10:05:54,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:54,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100214369] [2023-08-30 10:05:54,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:54,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:54,195 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 10:05:54,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:54,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100214369] [2023-08-30 10:05:54,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100214369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:54,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:05:54,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:05:54,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491231013] [2023-08-30 10:05:54,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:54,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:05:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:05:54,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:05:54,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2023-08-30 10:05:54,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:54,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2023-08-30 10:05:54,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:54,295 INFO L130 PetriNetUnfolder]: 42/110 cut-off events. [2023-08-30 10:05:54,296 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 10:05:54,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 110 events. 42/110 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 339 event pairs, 18 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 225. Up to 53 conditions per place. [2023-08-30 10:05:54,297 INFO L137 encePairwiseOnDemand]: 204/209 looper letters, 21 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2023-08-30 10:05:54,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 124 flow [2023-08-30 10:05:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:05:54,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:05:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2023-08-30 10:05:54,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2023-08-30 10:05:54,299 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2023-08-30 10:05:54,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2023-08-30 10:05:54,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:54,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2023-08-30 10:05:54,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,304 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,304 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 53 flow. Second operand 4 states and 385 transitions. [2023-08-30 10:05:54,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 124 flow [2023-08-30 10:05:54,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:05:54,305 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 62 flow [2023-08-30 10:05:54,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-08-30 10:05:54,307 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-08-30 10:05:54,307 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 62 flow [2023-08-30 10:05:54,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:54,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:05:54,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:05:54,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-30 10:05:54,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1229664471, now seen corresponding path program 1 times [2023-08-30 10:05:54,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:54,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135711987] [2023-08-30 10:05:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:54,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:54,506 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 10:05:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135711987] [2023-08-30 10:05:54,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135711987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:54,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:05:54,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:05:54,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374130658] [2023-08-30 10:05:54,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:54,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:05:54,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:54,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:05:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:05:54,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 209 [2023-08-30 10:05:54,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 62 flow. Second operand has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:54,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 209 [2023-08-30 10:05:54,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:54,695 INFO L130 PetriNetUnfolder]: 35/104 cut-off events. [2023-08-30 10:05:54,696 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 10:05:54,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 104 events. 35/104 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 349 event pairs, 10 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 220. Up to 30 conditions per place. [2023-08-30 10:05:54,698 INFO L137 encePairwiseOnDemand]: 201/209 looper letters, 27 selfloop transitions, 12 changer transitions 0/42 dead transitions. [2023-08-30 10:05:54,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 198 flow [2023-08-30 10:05:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:05:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:05:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 805 transitions. [2023-08-30 10:05:54,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4279638490164806 [2023-08-30 10:05:54,701 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 805 transitions. [2023-08-30 10:05:54,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 805 transitions. [2023-08-30 10:05:54,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:54,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 805 transitions. [2023-08-30 10:05:54,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.44444444444444) internal successors, (805), 9 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 209.0) internal successors, (2090), 10 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,706 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 209.0) internal successors, (2090), 10 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,706 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 62 flow. Second operand 9 states and 805 transitions. [2023-08-30 10:05:54,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 198 flow [2023-08-30 10:05:54,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:05:54,707 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 117 flow [2023-08-30 10:05:54,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-30 10:05:54,709 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-08-30 10:05:54,709 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 117 flow [2023-08-30 10:05:54,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:54,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:05:54,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:05:54,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-30 10:05:54,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:54,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1229664466, now seen corresponding path program 1 times [2023-08-30 10:05:54,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:54,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30693151] [2023-08-30 10:05:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:54,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:54,776 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 10:05:54,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:54,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30693151] [2023-08-30 10:05:54,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30693151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:54,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:05:54,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:05:54,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320913966] [2023-08-30 10:05:54,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:54,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:05:54,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:54,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:05:54,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:05:54,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 209 [2023-08-30 10:05:54,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:54,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 209 [2023-08-30 10:05:54,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:54,827 INFO L130 PetriNetUnfolder]: 29/89 cut-off events. [2023-08-30 10:05:54,828 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-30 10:05:54,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 89 events. 29/89 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 291 event pairs, 18 based on Foata normal form. 7/95 useless extension candidates. Maximal degree in co-relation 233. Up to 52 conditions per place. [2023-08-30 10:05:54,831 INFO L137 encePairwiseOnDemand]: 204/209 looper letters, 9 selfloop transitions, 6 changer transitions 12/30 dead transitions. [2023-08-30 10:05:54,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 184 flow [2023-08-30 10:05:54,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:05:54,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:05:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2023-08-30 10:05:54,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768740031897927 [2023-08-30 10:05:54,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2023-08-30 10:05:54,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2023-08-30 10:05:54,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:54,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2023-08-30 10:05:54,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,837 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 117 flow. Second operand 3 states and 299 transitions. [2023-08-30 10:05:54,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 184 flow [2023-08-30 10:05:54,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 165 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:05:54,839 INFO L231 Difference]: Finished difference. Result has 33 places, 17 transitions, 78 flow [2023-08-30 10:05:54,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2023-08-30 10:05:54,840 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2023-08-30 10:05:54,841 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 78 flow [2023-08-30 10:05:54,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:54,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:54,841 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:05:54,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:05:54,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-30 10:05:54,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:54,842 INFO L85 PathProgramCache]: Analyzing trace with hash 400946506, now seen corresponding path program 1 times [2023-08-30 10:05:54,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:54,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890650295] [2023-08-30 10:05:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:54,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:05:54,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:54,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890650295] [2023-08-30 10:05:54,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890650295] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:05:54,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503264212] [2023-08-30 10:05:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:54,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:05:54,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:05:54,998 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 10:05:55,020 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 10:05:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:55,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 10:05:55,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:05:55,145 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:05:55,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:05:55,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:05:55,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:05:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:05:55,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:05:55,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503264212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:55,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:05:55,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-30 10:05:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450308160] [2023-08-30 10:05:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:55,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:05:55,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:05:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:05:55,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2023-08-30 10:05:55,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:55,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:55,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2023-08-30 10:05:55,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:55,378 INFO L130 PetriNetUnfolder]: 6/28 cut-off events. [2023-08-30 10:05:55,378 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 10:05:55,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 28 events. 6/28 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 5 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 66. Up to 23 conditions per place. [2023-08-30 10:05:55,379 INFO L137 encePairwiseOnDemand]: 207/209 looper letters, 12 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-30 10:05:55,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 16 transitions, 99 flow [2023-08-30 10:05:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:05:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:05:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-30 10:05:55,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433811802232855 [2023-08-30 10:05:55,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-30 10:05:55,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-30 10:05:55,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:55,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-30 10:05:55,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:55,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:55,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:55,384 INFO L175 Difference]: Start difference. First operand has 33 places, 17 transitions, 78 flow. Second operand 3 states and 278 transitions. [2023-08-30 10:05:55,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 16 transitions, 99 flow [2023-08-30 10:05:55,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 88 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 10:05:55,386 INFO L231 Difference]: Finished difference. Result has 24 places, 16 transitions, 64 flow [2023-08-30 10:05:55,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2023-08-30 10:05:55,388 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -5 predicate places. [2023-08-30 10:05:55,388 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 64 flow [2023-08-30 10:05:55,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:55,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:55,388 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:05:55,396 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 10:05:55,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:05:55,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-30 10:05:55,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:55,594 INFO L85 PathProgramCache]: Analyzing trace with hash 400856291, now seen corresponding path program 1 times [2023-08-30 10:05:55,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:55,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91083100] [2023-08-30 10:05:55,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:55,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:05:55,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:55,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91083100] [2023-08-30 10:05:55,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91083100] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:05:55,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073936760] [2023-08-30 10:05:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:55,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:05:55,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:05:55,757 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 10:05:55,759 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 10:05:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:55,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:05:55,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:05:55,851 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:05:55,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:05:55,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:05:55,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:05:55,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:05:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:05:56,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:05:56,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073936760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:56,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:05:56,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 10:05:56,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882668712] [2023-08-30 10:05:56,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:56,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:05:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:05:56,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:05:56,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 209 [2023-08-30 10:05:56,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 64 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 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 10:05:56,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:56,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 209 [2023-08-30 10:05:56,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:56,149 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2023-08-30 10:05:56,149 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 10:05:56,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 27 events. 6/27 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 2 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 65. Up to 10 conditions per place. [2023-08-30 10:05:56,150 INFO L137 encePairwiseOnDemand]: 205/209 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-30 10:05:56,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 17 transitions, 92 flow [2023-08-30 10:05:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:05:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:05:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2023-08-30 10:05:56,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42392344497607654 [2023-08-30 10:05:56,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2023-08-30 10:05:56,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2023-08-30 10:05:56,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:56,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2023-08-30 10:05:56,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:56,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:56,154 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:56,154 INFO L175 Difference]: Start difference. First operand has 24 places, 16 transitions, 64 flow. Second operand 5 states and 443 transitions. [2023-08-30 10:05:56,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 17 transitions, 92 flow [2023-08-30 10:05:56,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:05:56,155 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-08-30 10:05:56,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-08-30 10:05:56,155 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -4 predicate places. [2023-08-30 10:05:56,156 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-08-30 10:05:56,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 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 10:05:56,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-08-30 10:05:56,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-08-30 10:05:56,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-08-30 10:05:56,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-08-30 10:05:56,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-08-30 10:05:56,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-08-30 10:05:56,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-08-30 10:05:56,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-08-30 10:05:56,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-08-30 10:05:56,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-08-30 10:05:56,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 10:05:56,365 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 10:05:56,366 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-30 10:05:56,367 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:05:56,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:56,377 INFO L130 PetriNetUnfolder]: 14/135 cut-off events. [2023-08-30 10:05:56,377 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:05:56,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 14/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 310 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-30 10:05:56,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:56,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:56,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:05:56,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:56,379 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:56,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 108 transitions, 221 flow [2023-08-30 10:05:56,385 INFO L130 PetriNetUnfolder]: 14/135 cut-off events. [2023-08-30 10:05:56,385 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:05:56,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 14/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 310 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-30 10:05:56,386 INFO L119 LiptonReduction]: Number of co-enabled transitions 2960 [2023-08-30 10:05:58,364 INFO L134 LiptonReduction]: Checked pairs total: 5179 [2023-08-30 10:05:58,364 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-30 10:05:58,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:05:58,365 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;@76e9fe84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:05:58,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:05:58,367 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-08-30 10:05:58,367 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:05:58,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:58,367 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:05:58,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:05:58,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1498287780, now seen corresponding path program 1 times [2023-08-30 10:05:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522122079] [2023-08-30 10:05:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:05:58,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:05:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:05:58,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:05:58,388 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:05:58,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:05:58,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:05:58,388 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:05:58,389 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:05:58,389 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:05:58,389 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:05:58,401 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 10:05:58,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 149 transitions, 310 flow [2023-08-30 10:05:58,413 INFO L130 PetriNetUnfolder]: 24/212 cut-off events. [2023-08-30 10:05:58,413 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:05:58,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 24/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 601 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-08-30 10:05:58,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 149 transitions, 310 flow [2023-08-30 10:05:58,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 149 transitions, 310 flow [2023-08-30 10:05:58,415 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:05:58,415 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 149 transitions, 310 flow [2023-08-30 10:05:58,415 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 149 transitions, 310 flow [2023-08-30 10:05:58,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 149 transitions, 310 flow [2023-08-30 10:05:58,425 INFO L130 PetriNetUnfolder]: 24/212 cut-off events. [2023-08-30 10:05:58,426 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:05:58,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 24/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 601 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-08-30 10:05:58,429 INFO L119 LiptonReduction]: Number of co-enabled transitions 9200 [2023-08-30 10:06:00,819 INFO L134 LiptonReduction]: Checked pairs total: 19963 [2023-08-30 10:06:00,819 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-30 10:06:00,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:06:00,821 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;@76e9fe84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:06:00,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-30 10:06:00,823 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 10:06:00,823 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:06:00,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:00,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:06:00,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:00,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:00,823 INFO L85 PathProgramCache]: Analyzing trace with hash 813767269, now seen corresponding path program 1 times [2023-08-30 10:06:00,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:00,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881887701] [2023-08-30 10:06:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:00,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:00,851 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 10:06:00,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:00,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881887701] [2023-08-30 10:06:00,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881887701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:00,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:00,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:06:00,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008186240] [2023-08-30 10:06:00,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:00,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:00,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:00,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 282 [2023-08-30 10:06:00,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:00,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:00,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 282 [2023-08-30 10:06:00,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:01,175 INFO L130 PetriNetUnfolder]: 3148/5078 cut-off events. [2023-08-30 10:06:01,176 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-30 10:06:01,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 5078 events. 3148/5078 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 32689 event pairs, 2996 based on Foata normal form. 543/3982 useless extension candidates. Maximal degree in co-relation 6623. Up to 4982 conditions per place. [2023-08-30 10:06:01,195 INFO L137 encePairwiseOnDemand]: 263/282 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 10:06:01,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 228 flow [2023-08-30 10:06:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-30 10:06:01,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2023-08-30 10:06:01,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-30 10:06:01,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-30 10:06:01,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:01,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-30 10:06:01,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,199 INFO L175 Difference]: Start difference. First operand has 48 places, 57 transitions, 126 flow. Second operand 3 states and 452 transitions. [2023-08-30 10:06:01,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 228 flow [2023-08-30 10:06:01,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 226 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 10:06:01,201 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 112 flow [2023-08-30 10:06:01,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, 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=112, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-30 10:06:01,202 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2023-08-30 10:06:01,202 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 112 flow [2023-08-30 10:06:01,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:01,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:01,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:06:01,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:01,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash 352624567, now seen corresponding path program 1 times [2023-08-30 10:06:01,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:01,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702609132] [2023-08-30 10:06:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:01,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:01,267 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 10:06:01,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:01,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702609132] [2023-08-30 10:06:01,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702609132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:01,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:01,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:01,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045315487] [2023-08-30 10:06:01,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:01,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:06:01,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:06:01,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:06:01,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 282 [2023-08-30 10:06:01,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:01,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 282 [2023-08-30 10:06:01,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:01,569 INFO L130 PetriNetUnfolder]: 2828/4572 cut-off events. [2023-08-30 10:06:01,569 INFO L131 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2023-08-30 10:06:01,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9858 conditions, 4572 events. 2828/4572 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 28623 event pairs, 1097 based on Foata normal form. 0/3389 useless extension candidates. Maximal degree in co-relation 9775. Up to 4214 conditions per place. [2023-08-30 10:06:01,584 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 56 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-30 10:06:01,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 300 flow [2023-08-30 10:06:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:06:01,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:06:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-30 10:06:01,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2023-08-30 10:06:01,586 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-30 10:06:01,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-30 10:06:01,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:01,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-30 10:06:01,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,589 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 112 flow. Second operand 4 states and 552 transitions. [2023-08-30 10:06:01,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 300 flow [2023-08-30 10:06:01,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:01,591 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 161 flow [2023-08-30 10:06:01,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-08-30 10:06:01,593 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2023-08-30 10:06:01,593 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 161 flow [2023-08-30 10:06:01,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:01,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:06:01,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:06:01,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:01,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:01,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2141569525, now seen corresponding path program 1 times [2023-08-30 10:06:01,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:01,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76235452] [2023-08-30 10:06:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:01,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:01,609 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 10:06:01,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:01,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76235452] [2023-08-30 10:06:01,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76235452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:01,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:01,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:01,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250249622] [2023-08-30 10:06:01,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:01,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:01,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:01,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:01,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:01,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 282 [2023-08-30 10:06:01,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:01,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 282 [2023-08-30 10:06:01,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:01,876 INFO L130 PetriNetUnfolder]: 2502/4033 cut-off events. [2023-08-30 10:06:01,876 INFO L131 PetriNetUnfolder]: For 761/761 co-relation queries the response was YES. [2023-08-30 10:06:01,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9640 conditions, 4033 events. 2502/4033 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 25429 event pairs, 856 based on Foata normal form. 0/3254 useless extension candidates. Maximal degree in co-relation 7196. Up to 2621 conditions per place. [2023-08-30 10:06:01,895 INFO L137 encePairwiseOnDemand]: 278/282 looper letters, 67 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-08-30 10:06:01,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 383 flow [2023-08-30 10:06:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-08-30 10:06:01,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189125295508275 [2023-08-30 10:06:01,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-08-30 10:06:01,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-08-30 10:06:01,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:01,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-08-30 10:06:01,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,900 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 161 flow. Second operand 3 states and 439 transitions. [2023-08-30 10:06:01,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 383 flow [2023-08-30 10:06:01,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 383 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:06:01,903 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 173 flow [2023-08-30 10:06:01,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-30 10:06:01,904 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-08-30 10:06:01,905 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 173 flow [2023-08-30 10:06:01,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:01,905 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:06:01,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:06:01,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:01,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:01,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2141569501, now seen corresponding path program 1 times [2023-08-30 10:06:01,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:01,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502294641] [2023-08-30 10:06:01,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:01,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:01,924 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 10:06:01,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:01,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502294641] [2023-08-30 10:06:01,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502294641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:01,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:01,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:01,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631166649] [2023-08-30 10:06:01,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:01,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:01,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:01,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:01,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:01,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 282 [2023-08-30 10:06:01,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:01,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 282 [2023-08-30 10:06:01,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:02,151 INFO L130 PetriNetUnfolder]: 2176/3544 cut-off events. [2023-08-30 10:06:02,152 INFO L131 PetriNetUnfolder]: For 2295/2295 co-relation queries the response was YES. [2023-08-30 10:06:02,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8940 conditions, 3544 events. 2176/3544 cut-off events. For 2295/2295 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20808 event pairs, 2063 based on Foata normal form. 177/3186 useless extension candidates. Maximal degree in co-relation 6706. Up to 3494 conditions per place. [2023-08-30 10:06:02,164 INFO L137 encePairwiseOnDemand]: 280/282 looper letters, 41 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-30 10:06:02,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 253 flow [2023-08-30 10:06:02,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-08-30 10:06:02,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2023-08-30 10:06:02,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-08-30 10:06:02,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-08-30 10:06:02,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:02,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-08-30 10:06:02,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:02,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:02,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:02,168 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 173 flow. Second operand 3 states and 414 transitions. [2023-08-30 10:06:02,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 253 flow [2023-08-30 10:06:02,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 48 transitions, 249 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:02,170 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 167 flow [2023-08-30 10:06:02,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-08-30 10:06:02,170 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-08-30 10:06:02,171 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 167 flow [2023-08-30 10:06:02,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:02,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:02,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:02,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:06:02,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:02,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:02,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1076413684, now seen corresponding path program 1 times [2023-08-30 10:06:02,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:02,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677277262] [2023-08-30 10:06:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:02,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:02,277 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 10:06:02,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:02,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677277262] [2023-08-30 10:06:02,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677277262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:02,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:02,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:06:02,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727702310] [2023-08-30 10:06:02,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:02,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:06:02,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:02,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:06:02,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:06:02,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 282 [2023-08-30 10:06:02,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:02,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:02,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 282 [2023-08-30 10:06:02,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:02,833 INFO L130 PetriNetUnfolder]: 3053/5118 cut-off events. [2023-08-30 10:06:02,833 INFO L131 PetriNetUnfolder]: For 2140/2140 co-relation queries the response was YES. [2023-08-30 10:06:02,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12358 conditions, 5118 events. 3053/5118 cut-off events. For 2140/2140 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 32764 event pairs, 530 based on Foata normal form. 0/4463 useless extension candidates. Maximal degree in co-relation 12342. Up to 2841 conditions per place. [2023-08-30 10:06:02,854 INFO L137 encePairwiseOnDemand]: 265/282 looper letters, 120 selfloop transitions, 30 changer transitions 0/156 dead transitions. [2023-08-30 10:06:02,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 156 transitions, 812 flow [2023-08-30 10:06:02,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:06:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:06:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1203 transitions. [2023-08-30 10:06:02,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739952718676123 [2023-08-30 10:06:02,859 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1203 transitions. [2023-08-30 10:06:02,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1203 transitions. [2023-08-30 10:06:02,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:02,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1203 transitions. [2023-08-30 10:06:02,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.66666666666666) internal successors, (1203), 9 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:02,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 282.0) internal successors, (2820), 10 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:02,866 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 282.0) internal successors, (2820), 10 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:02,866 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 167 flow. Second operand 9 states and 1203 transitions. [2023-08-30 10:06:02,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 156 transitions, 812 flow [2023-08-30 10:06:02,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 156 transitions, 811 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:02,870 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 397 flow [2023-08-30 10:06:02,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=397, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2023-08-30 10:06:02,871 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 20 predicate places. [2023-08-30 10:06:02,871 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 397 flow [2023-08-30 10:06:02,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:02,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:02,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:02,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:06:02,872 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:02,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1076413667, now seen corresponding path program 1 times [2023-08-30 10:06:02,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:02,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280969385] [2023-08-30 10:06:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:02,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:02,919 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 10:06:02,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:02,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280969385] [2023-08-30 10:06:02,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280969385] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:02,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:02,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:02,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065498324] [2023-08-30 10:06:02,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:02,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:06:02,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:02,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:06:02,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:06:02,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 282 [2023-08-30 10:06:02,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:02,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:02,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 282 [2023-08-30 10:06:02,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:03,413 INFO L130 PetriNetUnfolder]: 3196/5586 cut-off events. [2023-08-30 10:06:03,413 INFO L131 PetriNetUnfolder]: For 7372/7372 co-relation queries the response was YES. [2023-08-30 10:06:03,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17042 conditions, 5586 events. 3196/5586 cut-off events. For 7372/7372 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 37857 event pairs, 765 based on Foata normal form. 289/5866 useless extension candidates. Maximal degree in co-relation 17021. Up to 2423 conditions per place. [2023-08-30 10:06:03,436 INFO L137 encePairwiseOnDemand]: 268/282 looper letters, 111 selfloop transitions, 44 changer transitions 0/161 dead transitions. [2023-08-30 10:06:03,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 161 transitions, 1156 flow [2023-08-30 10:06:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:06:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:06:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 704 transitions. [2023-08-30 10:06:03,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49929078014184397 [2023-08-30 10:06:03,439 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 704 transitions. [2023-08-30 10:06:03,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 704 transitions. [2023-08-30 10:06:03,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:03,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 704 transitions. [2023-08-30 10:06:03,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:03,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:03,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:03,442 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 397 flow. Second operand 5 states and 704 transitions. [2023-08-30 10:06:03,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 161 transitions, 1156 flow [2023-08-30 10:06:03,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 161 transitions, 1133 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 10:06:03,455 INFO L231 Difference]: Finished difference. Result has 74 places, 102 transitions, 830 flow [2023-08-30 10:06:03,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=830, PETRI_PLACES=74, PETRI_TRANSITIONS=102} [2023-08-30 10:06:03,456 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2023-08-30 10:06:03,456 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 102 transitions, 830 flow [2023-08-30 10:06:03,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:03,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:03,456 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:03,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:06:03,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:03,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1850538918, now seen corresponding path program 1 times [2023-08-30 10:06:03,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:03,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164853072] [2023-08-30 10:06:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:03,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164853072] [2023-08-30 10:06:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164853072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:03,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:03,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:06:03,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848817751] [2023-08-30 10:06:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:03,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:06:03,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:06:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:06:03,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 282 [2023-08-30 10:06:03,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 102 transitions, 830 flow. Second operand has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:03,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:03,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 282 [2023-08-30 10:06:03,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:04,073 INFO L130 PetriNetUnfolder]: 3146/5507 cut-off events. [2023-08-30 10:06:04,073 INFO L131 PetriNetUnfolder]: For 14442/14445 co-relation queries the response was YES. [2023-08-30 10:06:04,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19765 conditions, 5507 events. 3146/5507 cut-off events. For 14442/14445 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 37168 event pairs, 1262 based on Foata normal form. 61/5553 useless extension candidates. Maximal degree in co-relation 19739. Up to 2711 conditions per place. [2023-08-30 10:06:04,098 INFO L137 encePairwiseOnDemand]: 269/282 looper letters, 158 selfloop transitions, 51 changer transitions 8/223 dead transitions. [2023-08-30 10:06:04,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 223 transitions, 2047 flow [2023-08-30 10:06:04,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:06:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:06:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2023-08-30 10:06:04,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2023-08-30 10:06:04,100 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2023-08-30 10:06:04,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2023-08-30 10:06:04,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:04,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2023-08-30 10:06:04,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:04,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:04,105 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:04,105 INFO L175 Difference]: Start difference. First operand has 74 places, 102 transitions, 830 flow. Second operand 7 states and 945 transitions. [2023-08-30 10:06:04,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 223 transitions, 2047 flow [2023-08-30 10:06:04,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 223 transitions, 2041 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-30 10:06:04,125 INFO L231 Difference]: Finished difference. Result has 85 places, 132 transitions, 1364 flow [2023-08-30 10:06:04,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1364, PETRI_PLACES=85, PETRI_TRANSITIONS=132} [2023-08-30 10:06:04,126 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 37 predicate places. [2023-08-30 10:06:04,126 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 132 transitions, 1364 flow [2023-08-30 10:06:04,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:04,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:04,126 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:04,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:06:04,127 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:04,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1850538935, now seen corresponding path program 1 times [2023-08-30 10:06:04,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:04,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354168350] [2023-08-30 10:06:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:04,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:04,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:04,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354168350] [2023-08-30 10:06:04,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354168350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:04,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703378600] [2023-08-30 10:06:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:04,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:04,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:04,266 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 10:06:04,267 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 10:06:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:04,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:06:04,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:04,350 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:06:04,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:06:04,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:06:04,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:06:04,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:06:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:04,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703378600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:04,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:04,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 10:06:04,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662699308] [2023-08-30 10:06:04,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:04,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:06:04,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:06:04,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:06:04,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 282 [2023-08-30 10:06:04,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 132 transitions, 1364 flow. Second operand has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:04,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:04,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 282 [2023-08-30 10:06:04,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:05,167 INFO L130 PetriNetUnfolder]: 3014/5333 cut-off events. [2023-08-30 10:06:05,167 INFO L131 PetriNetUnfolder]: For 21658/21661 co-relation queries the response was YES. [2023-08-30 10:06:05,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21291 conditions, 5333 events. 3014/5333 cut-off events. For 21658/21661 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 35828 event pairs, 990 based on Foata normal form. 51/5380 useless extension candidates. Maximal degree in co-relation 21257. Up to 4209 conditions per place. [2023-08-30 10:06:05,198 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 162 selfloop transitions, 25 changer transitions 0/193 dead transitions. [2023-08-30 10:06:05,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 193 transitions, 2157 flow [2023-08-30 10:06:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:06:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:06:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 794 transitions. [2023-08-30 10:06:05,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46926713947990545 [2023-08-30 10:06:05,201 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 794 transitions. [2023-08-30 10:06:05,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 794 transitions. [2023-08-30 10:06:05,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:05,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 794 transitions. [2023-08-30 10:06:05,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.33333333333334) internal successors, (794), 6 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:05,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 282.0) internal successors, (1974), 7 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:05,205 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 282.0) internal successors, (1974), 7 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:05,205 INFO L175 Difference]: Start difference. First operand has 85 places, 132 transitions, 1364 flow. Second operand 6 states and 794 transitions. [2023-08-30 10:06:05,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 193 transitions, 2157 flow [2023-08-30 10:06:05,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 193 transitions, 2147 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-30 10:06:05,266 INFO L231 Difference]: Finished difference. Result has 92 places, 143 transitions, 1554 flow [2023-08-30 10:06:05,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1554, PETRI_PLACES=92, PETRI_TRANSITIONS=143} [2023-08-30 10:06:05,266 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 44 predicate places. [2023-08-30 10:06:05,266 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 143 transitions, 1554 flow [2023-08-30 10:06:05,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:05,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:05,267 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:05,273 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 10:06:05,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:05,471 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:05,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash -618380510, now seen corresponding path program 1 times [2023-08-30 10:06:05,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:05,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730838044] [2023-08-30 10:06:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:05,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:06:05,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730838044] [2023-08-30 10:06:05,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730838044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554912921] [2023-08-30 10:06:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:05,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:05,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:05,569 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 10:06:05,571 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 10:06:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:05,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:06:05,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:05,647 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:06:05,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:06:05,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:06:05,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:06:05,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:06:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:06:05,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:06:05,804 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_255 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_255) c_~p~0.base) c_~p~0.offset)))) is different from false [2023-08-30 10:06:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 10:06:05,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554912921] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:06:05,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:06:05,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 10:06:05,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133775896] [2023-08-30 10:06:05,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:06:05,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:06:05,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:06:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=112, Unknown=1, NotChecked=22, Total=182 [2023-08-30 10:06:05,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 282 [2023-08-30 10:06:05,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 143 transitions, 1554 flow. Second operand has 14 states, 14 states have (on average 97.78571428571429) internal successors, (1369), 14 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:05,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:05,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 282 [2023-08-30 10:06:05,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:06,627 INFO L130 PetriNetUnfolder]: 3581/6242 cut-off events. [2023-08-30 10:06:06,627 INFO L131 PetriNetUnfolder]: For 29328/29331 co-relation queries the response was YES. [2023-08-30 10:06:06,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25237 conditions, 6242 events. 3581/6242 cut-off events. For 29328/29331 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 42636 event pairs, 614 based on Foata normal form. 186/6422 useless extension candidates. Maximal degree in co-relation 25199. Up to 3204 conditions per place. [2023-08-30 10:06:06,668 INFO L137 encePairwiseOnDemand]: 266/282 looper letters, 221 selfloop transitions, 106 changer transitions 25/358 dead transitions. [2023-08-30 10:06:06,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 358 transitions, 3964 flow [2023-08-30 10:06:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:06:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:06:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1718 transitions. [2023-08-30 10:06:06,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3807624113475177 [2023-08-30 10:06:06,674 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1718 transitions. [2023-08-30 10:06:06,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1718 transitions. [2023-08-30 10:06:06,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:06,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1718 transitions. [2023-08-30 10:06:06,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 107.375) internal successors, (1718), 16 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:06,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 282.0) internal successors, (4794), 17 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:06,683 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 282.0) internal successors, (4794), 17 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:06,683 INFO L175 Difference]: Start difference. First operand has 92 places, 143 transitions, 1554 flow. Second operand 16 states and 1718 transitions. [2023-08-30 10:06:06,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 358 transitions, 3964 flow [2023-08-30 10:06:06,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 358 transitions, 3892 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-08-30 10:06:06,774 INFO L231 Difference]: Finished difference. Result has 114 places, 209 transitions, 2762 flow [2023-08-30 10:06:06,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2762, PETRI_PLACES=114, PETRI_TRANSITIONS=209} [2023-08-30 10:06:06,775 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 66 predicate places. [2023-08-30 10:06:06,776 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 209 transitions, 2762 flow [2023-08-30 10:06:06,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 97.78571428571429) internal successors, (1369), 14 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:06,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:06,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:06,783 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 10:06:06,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 10:06:06,981 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:06,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:06,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1439219794, now seen corresponding path program 1 times [2023-08-30 10:06:06,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:06,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868401493] [2023-08-30 10:06:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:06,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:07,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:07,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868401493] [2023-08-30 10:06:07,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868401493] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:07,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844987383] [2023-08-30 10:06:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:07,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:07,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:07,067 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 10:06:07,070 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 10:06:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:07,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:06:07,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:07,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:06:07,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:06:07,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:06:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:06:07,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:07,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844987383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:07,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:07,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-30 10:06:07,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984078210] [2023-08-30 10:06:07,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:07,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:07,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:07,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:07,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:06:07,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 282 [2023-08-30 10:06:07,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 209 transitions, 2762 flow. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:07,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:07,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 282 [2023-08-30 10:06:07,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:07,505 INFO L130 PetriNetUnfolder]: 956/2049 cut-off events. [2023-08-30 10:06:07,506 INFO L131 PetriNetUnfolder]: For 9655/9655 co-relation queries the response was YES. [2023-08-30 10:06:07,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 2049 events. 956/2049 cut-off events. For 9655/9655 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 12895 event pairs, 226 based on Foata normal form. 385/2434 useless extension candidates. Maximal degree in co-relation 8350. Up to 1422 conditions per place. [2023-08-30 10:06:07,515 INFO L137 encePairwiseOnDemand]: 271/282 looper letters, 103 selfloop transitions, 20 changer transitions 1/128 dead transitions. [2023-08-30 10:06:07,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 128 transitions, 1696 flow [2023-08-30 10:06:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:06:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:06:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 513 transitions. [2023-08-30 10:06:07,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478723404255317 [2023-08-30 10:06:07,517 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 513 transitions. [2023-08-30 10:06:07,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 513 transitions. [2023-08-30 10:06:07,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:07,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 513 transitions. [2023-08-30 10:06:07,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:07,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:07,520 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:07,520 INFO L175 Difference]: Start difference. First operand has 114 places, 209 transitions, 2762 flow. Second operand 4 states and 513 transitions. [2023-08-30 10:06:07,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 128 transitions, 1696 flow [2023-08-30 10:06:07,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 128 transitions, 1574 flow, removed 59 selfloop flow, removed 3 redundant places. [2023-08-30 10:06:07,550 INFO L231 Difference]: Finished difference. Result has 111 places, 113 transitions, 1242 flow [2023-08-30 10:06:07,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1242, PETRI_PLACES=111, PETRI_TRANSITIONS=113} [2023-08-30 10:06:07,550 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 63 predicate places. [2023-08-30 10:06:07,550 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 113 transitions, 1242 flow [2023-08-30 10:06:07,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:07,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:07,551 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:07,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 10:06:07,756 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,SelfDestructingSolverStorable16 [2023-08-30 10:06:07,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:07,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1398078053, now seen corresponding path program 1 times [2023-08-30 10:06:07,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:07,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146324302] [2023-08-30 10:06:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:07,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:07,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:07,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146324302] [2023-08-30 10:06:07,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146324302] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:07,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745387353] [2023-08-30 10:06:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:07,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:07,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:07,843 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 10:06:07,845 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 10:06:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:07,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 10:06:07,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:07,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:06:07,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:06:07,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:06:07,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:06:07,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:06:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:07,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:06:08,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:06:08,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-08-30 10:06:08,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-08-30 10:06:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:08,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745387353] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:06:08,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:06:08,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 10:06:08,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988905039] [2023-08-30 10:06:08,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:06:08,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:06:08,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:08,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:06:08,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:06:08,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 282 [2023-08-30 10:06:08,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 113 transitions, 1242 flow. Second operand has 10 states, 10 states have (on average 122.1) internal successors, (1221), 10 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:08,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 282 [2023-08-30 10:06:08,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:08,286 INFO L130 PetriNetUnfolder]: 250/779 cut-off events. [2023-08-30 10:06:08,286 INFO L131 PetriNetUnfolder]: For 3799/3799 co-relation queries the response was YES. [2023-08-30 10:06:08,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 779 events. 250/779 cut-off events. For 3799/3799 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4630 event pairs, 32 based on Foata normal form. 129/908 useless extension candidates. Maximal degree in co-relation 3340. Up to 570 conditions per place. [2023-08-30 10:06:08,291 INFO L137 encePairwiseOnDemand]: 277/282 looper letters, 85 selfloop transitions, 5 changer transitions 8/104 dead transitions. [2023-08-30 10:06:08,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 104 transitions, 1300 flow [2023-08-30 10:06:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:06:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:06:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 518 transitions. [2023-08-30 10:06:08,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592198581560284 [2023-08-30 10:06:08,293 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 518 transitions. [2023-08-30 10:06:08,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 518 transitions. [2023-08-30 10:06:08,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:08,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 518 transitions. [2023-08-30 10:06:08,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,297 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,297 INFO L175 Difference]: Start difference. First operand has 111 places, 113 transitions, 1242 flow. Second operand 4 states and 518 transitions. [2023-08-30 10:06:08,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 104 transitions, 1300 flow [2023-08-30 10:06:08,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 1165 flow, removed 29 selfloop flow, removed 7 redundant places. [2023-08-30 10:06:08,312 INFO L231 Difference]: Finished difference. Result has 106 places, 85 transitions, 802 flow [2023-08-30 10:06:08,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=802, PETRI_PLACES=106, PETRI_TRANSITIONS=85} [2023-08-30 10:06:08,313 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 58 predicate places. [2023-08-30 10:06:08,313 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 85 transitions, 802 flow [2023-08-30 10:06:08,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.1) internal successors, (1221), 10 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:08,314 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:08,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 10:06:08,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 10:06:08,519 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:08,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1558794683, now seen corresponding path program 1 times [2023-08-30 10:06:08,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:08,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642762226] [2023-08-30 10:06:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:08,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:06:08,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:08,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642762226] [2023-08-30 10:06:08,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642762226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:08,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:08,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:06:08,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322366083] [2023-08-30 10:06:08,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:08,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:06:08,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:08,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:06:08,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:06:08,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 282 [2023-08-30 10:06:08,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 85 transitions, 802 flow. Second operand has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:08,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 282 [2023-08-30 10:06:08,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:08,892 INFO L130 PetriNetUnfolder]: 245/764 cut-off events. [2023-08-30 10:06:08,892 INFO L131 PetriNetUnfolder]: For 2782/2785 co-relation queries the response was YES. [2023-08-30 10:06:08,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 764 events. 245/764 cut-off events. For 2782/2785 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4651 event pairs, 75 based on Foata normal form. 5/767 useless extension candidates. Maximal degree in co-relation 3096. Up to 253 conditions per place. [2023-08-30 10:06:08,896 INFO L137 encePairwiseOnDemand]: 268/282 looper letters, 77 selfloop transitions, 47 changer transitions 13/143 dead transitions. [2023-08-30 10:06:08,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 143 transitions, 1444 flow [2023-08-30 10:06:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:06:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:06:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1265 transitions. [2023-08-30 10:06:08,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44858156028368795 [2023-08-30 10:06:08,899 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1265 transitions. [2023-08-30 10:06:08,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1265 transitions. [2023-08-30 10:06:08,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:08,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1265 transitions. [2023-08-30 10:06:08,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.5) internal successors, (1265), 10 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 282.0) internal successors, (3102), 11 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,904 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 282.0) internal successors, (3102), 11 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,920 INFO L175 Difference]: Start difference. First operand has 106 places, 85 transitions, 802 flow. Second operand 10 states and 1265 transitions. [2023-08-30 10:06:08,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 143 transitions, 1444 flow [2023-08-30 10:06:08,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 143 transitions, 1435 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:06:08,928 INFO L231 Difference]: Finished difference. Result has 115 places, 88 transitions, 951 flow [2023-08-30 10:06:08,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=951, PETRI_PLACES=115, PETRI_TRANSITIONS=88} [2023-08-30 10:06:08,929 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 67 predicate places. [2023-08-30 10:06:08,929 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 88 transitions, 951 flow [2023-08-30 10:06:08,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:08,930 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:08,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 10:06:08,930 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:08,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1728046550, now seen corresponding path program 1 times [2023-08-30 10:06:08,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:08,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717298905] [2023-08-30 10:06:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:08,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:06:08,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717298905] [2023-08-30 10:06:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717298905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:08,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:08,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:08,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342221376] [2023-08-30 10:06:08,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:08,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:06:08,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:08,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:06:08,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:06:09,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 282 [2023-08-30 10:06:09,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 88 transitions, 951 flow. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 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 10:06:09,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:09,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 282 [2023-08-30 10:06:09,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:09,141 INFO L130 PetriNetUnfolder]: 240/750 cut-off events. [2023-08-30 10:06:09,142 INFO L131 PetriNetUnfolder]: For 3572/3575 co-relation queries the response was YES. [2023-08-30 10:06:09,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3237 conditions, 750 events. 240/750 cut-off events. For 3572/3575 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4530 event pairs, 120 based on Foata normal form. 5/753 useless extension candidates. Maximal degree in co-relation 3191. Up to 412 conditions per place. [2023-08-30 10:06:09,145 INFO L137 encePairwiseOnDemand]: 271/282 looper letters, 80 selfloop transitions, 25 changer transitions 1/112 dead transitions. [2023-08-30 10:06:09,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 112 transitions, 1329 flow [2023-08-30 10:06:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:06:09,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:06:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 653 transitions. [2023-08-30 10:06:09,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631205673758865 [2023-08-30 10:06:09,147 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 653 transitions. [2023-08-30 10:06:09,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 653 transitions. [2023-08-30 10:06:09,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:09,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 653 transitions. [2023-08-30 10:06:09,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:09,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:09,150 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:09,150 INFO L175 Difference]: Start difference. First operand has 115 places, 88 transitions, 951 flow. Second operand 5 states and 653 transitions. [2023-08-30 10:06:09,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 112 transitions, 1329 flow [2023-08-30 10:06:09,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 112 transitions, 1157 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-08-30 10:06:09,159 INFO L231 Difference]: Finished difference. Result has 115 places, 95 transitions, 971 flow [2023-08-30 10:06:09,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=971, PETRI_PLACES=115, PETRI_TRANSITIONS=95} [2023-08-30 10:06:09,160 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 67 predicate places. [2023-08-30 10:06:09,160 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 95 transitions, 971 flow [2023-08-30 10:06:09,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 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 10:06:09,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:09,160 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:09,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 10:06:09,161 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:09,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1777243637, now seen corresponding path program 2 times [2023-08-30 10:06:09,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:09,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661504369] [2023-08-30 10:06:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:09,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:09,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661504369] [2023-08-30 10:06:09,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661504369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709346576] [2023-08-30 10:06:09,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:06:09,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:09,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:09,293 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 10:06:09,295 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 10:06:09,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:06:09,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:06:09,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 10:06:09,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:09,376 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:06:09,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:06:09,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:06:09,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:06:09,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:06:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:09,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:06:09,528 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_441 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_441) c_~p~0.base) c_~p~0.offset) 2147483647)) is different from false [2023-08-30 10:06:09,540 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_440 Int) (v_ArrVal_441 (Array Int Int))) (or (< (select (select (store (store |c_#memory_int| c_~p~0.base (store (select |c_#memory_int| c_~p~0.base) c_~p~0.offset v_ArrVal_440)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_441) c_~p~0.base) c_~p~0.offset) 2147483647) (< |c_t_funThread1of2ForFork0_#t~mem8| (+ v_ArrVal_440 1)))) is different from false [2023-08-30 10:06:09,564 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_440 Int) (v_ArrVal_441 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_~p~0.base))) (or (< (select .cse0 c_~p~0.offset) (+ v_ArrVal_440 1)) (< (select (select (store (store |c_#memory_int| c_~p~0.base (store .cse0 c_~p~0.offset v_ArrVal_440)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_441) c_~p~0.base) c_~p~0.offset) 2147483647)))) is different from false [2023-08-30 10:06:09,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:06:09,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-30 10:06:09,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-08-30 10:06:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:06:09,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709346576] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:06:09,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:06:09,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 10:06:09,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869443778] [2023-08-30 10:06:09,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:06:09,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:06:09,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:09,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:06:09,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=213, Unknown=3, NotChecked=96, Total=380 [2023-08-30 10:06:09,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 282 [2023-08-30 10:06:09,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 95 transitions, 971 flow. Second operand has 20 states, 20 states have (on average 95.55) internal successors, (1911), 20 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:09,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:09,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 282 [2023-08-30 10:06:09,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:10,143 INFO L130 PetriNetUnfolder]: 263/795 cut-off events. [2023-08-30 10:06:10,143 INFO L131 PetriNetUnfolder]: For 3272/3285 co-relation queries the response was YES. [2023-08-30 10:06:10,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3308 conditions, 795 events. 263/795 cut-off events. For 3272/3285 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4762 event pairs, 48 based on Foata normal form. 10/802 useless extension candidates. Maximal degree in co-relation 3260. Up to 219 conditions per place. [2023-08-30 10:06:10,146 INFO L137 encePairwiseOnDemand]: 263/282 looper letters, 105 selfloop transitions, 49 changer transitions 20/180 dead transitions. [2023-08-30 10:06:10,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 180 transitions, 1799 flow [2023-08-30 10:06:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:06:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:06:10,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1990 transitions. [2023-08-30 10:06:10,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3528368794326241 [2023-08-30 10:06:10,148 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1990 transitions. [2023-08-30 10:06:10,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1990 transitions. [2023-08-30 10:06:10,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:10,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1990 transitions. [2023-08-30 10:06:10,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 99.5) internal successors, (1990), 20 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 282.0) internal successors, (5922), 21 states have internal predecessors, (5922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,155 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 282.0) internal successors, (5922), 21 states have internal predecessors, (5922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,155 INFO L175 Difference]: Start difference. First operand has 115 places, 95 transitions, 971 flow. Second operand 20 states and 1990 transitions. [2023-08-30 10:06:10,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 180 transitions, 1799 flow [2023-08-30 10:06:10,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 180 transitions, 1782 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:10,165 INFO L231 Difference]: Finished difference. Result has 137 places, 103 transitions, 1177 flow [2023-08-30 10:06:10,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1177, PETRI_PLACES=137, PETRI_TRANSITIONS=103} [2023-08-30 10:06:10,166 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 89 predicate places. [2023-08-30 10:06:10,166 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 103 transitions, 1177 flow [2023-08-30 10:06:10,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 95.55) internal successors, (1911), 20 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:10,167 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:10,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 10:06:10,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:10,371 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:10,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:10,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1777243687, now seen corresponding path program 1 times [2023-08-30 10:06:10,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:10,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903230561] [2023-08-30 10:06:10,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:10,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:10,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:10,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903230561] [2023-08-30 10:06:10,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903230561] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:10,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339646013] [2023-08-30 10:06:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:10,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:10,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:10,496 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 10:06:10,498 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 10:06:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:10,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 10:06:10,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:10,576 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:06:10,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:06:10,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:06:10,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:06:10,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:06:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:10,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:06:10,737 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_496 Int) (v_ArrVal_498 (Array Int Int))) (or (< 0 (+ (select (select (store (store |c_#memory_int| c_~p~0.base (store (select |c_#memory_int| c_~p~0.base) c_~p~0.offset v_ArrVal_496)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_498) c_~p~0.base) c_~p~0.offset) 2147483650)) (< (+ v_ArrVal_496 1) |c_t_funThread1of2ForFork0_#t~mem8|))) is different from false [2023-08-30 10:06:10,744 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_496 Int) (v_ArrVal_498 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_~p~0.base))) (or (< (+ v_ArrVal_496 1) (select .cse0 c_~p~0.offset)) (< 0 (+ (select (select (store (store |c_#memory_int| c_~p~0.base (store .cse0 c_~p~0.offset v_ArrVal_496)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_498) c_~p~0.base) c_~p~0.offset) 2147483650))))) is different from false [2023-08-30 10:06:10,758 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:06:10,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-30 10:06:10,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-08-30 10:06:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:10,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339646013] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:06:10,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:06:10,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 10:06:10,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619787966] [2023-08-30 10:06:10,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:06:10,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:06:10,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:06:10,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=230, Unknown=4, NotChecked=66, Total=380 [2023-08-30 10:06:10,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 282 [2023-08-30 10:06:10,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 103 transitions, 1177 flow. Second operand has 20 states, 20 states have (on average 95.55) internal successors, (1911), 20 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:10,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 282 [2023-08-30 10:06:10,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:15,267 INFO L130 PetriNetUnfolder]: 242/756 cut-off events. [2023-08-30 10:06:15,267 INFO L131 PetriNetUnfolder]: For 4469/4482 co-relation queries the response was YES. [2023-08-30 10:06:15,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3650 conditions, 756 events. 242/756 cut-off events. For 4469/4482 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4512 event pairs, 80 based on Foata normal form. 5/758 useless extension candidates. Maximal degree in co-relation 3596. Up to 235 conditions per place. [2023-08-30 10:06:15,270 INFO L137 encePairwiseOnDemand]: 265/282 looper letters, 106 selfloop transitions, 49 changer transitions 9/170 dead transitions. [2023-08-30 10:06:15,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 170 transitions, 1954 flow [2023-08-30 10:06:15,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 10:06:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 10:06:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1793 transitions. [2023-08-30 10:06:15,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353230890464933 [2023-08-30 10:06:15,273 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1793 transitions. [2023-08-30 10:06:15,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1793 transitions. [2023-08-30 10:06:15,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:15,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1793 transitions. [2023-08-30 10:06:15,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 99.61111111111111) internal successors, (1793), 18 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:15,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 282.0) internal successors, (5358), 19 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:15,279 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 282.0) internal successors, (5358), 19 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:15,279 INFO L175 Difference]: Start difference. First operand has 137 places, 103 transitions, 1177 flow. Second operand 18 states and 1793 transitions. [2023-08-30 10:06:15,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 170 transitions, 1954 flow [2023-08-30 10:06:15,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 170 transitions, 1796 flow, removed 27 selfloop flow, removed 15 redundant places. [2023-08-30 10:06:15,291 INFO L231 Difference]: Finished difference. Result has 138 places, 109 transitions, 1190 flow [2023-08-30 10:06:15,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1190, PETRI_PLACES=138, PETRI_TRANSITIONS=109} [2023-08-30 10:06:15,291 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 90 predicate places. [2023-08-30 10:06:15,291 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 109 transitions, 1190 flow [2023-08-30 10:06:15,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 95.55) internal successors, (1911), 20 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:15,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:15,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:15,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 10:06:15,496 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,SelfDestructingSolverStorable21 [2023-08-30 10:06:15,497 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:15,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:15,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1728046535, now seen corresponding path program 1 times [2023-08-30 10:06:15,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:15,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114296944] [2023-08-30 10:06:15,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:15,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:06:15,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:15,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114296944] [2023-08-30 10:06:15,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114296944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:15,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:15,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:06:15,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141907739] [2023-08-30 10:06:15,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:15,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:15,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:15,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:06:15,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 282 [2023-08-30 10:06:15,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 109 transitions, 1190 flow. Second operand has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:15,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:15,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 282 [2023-08-30 10:06:15,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:15,764 INFO L130 PetriNetUnfolder]: 240/752 cut-off events. [2023-08-30 10:06:15,764 INFO L131 PetriNetUnfolder]: For 4151/4154 co-relation queries the response was YES. [2023-08-30 10:06:15,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3630 conditions, 752 events. 240/752 cut-off events. For 4151/4154 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4530 event pairs, 94 based on Foata normal form. 5/755 useless extension candidates. Maximal degree in co-relation 3580. Up to 300 conditions per place. [2023-08-30 10:06:15,766 INFO L137 encePairwiseOnDemand]: 269/282 looper letters, 82 selfloop transitions, 45 changer transitions 1/134 dead transitions. [2023-08-30 10:06:15,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 134 transitions, 1596 flow [2023-08-30 10:06:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:06:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:06:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 911 transitions. [2023-08-30 10:06:15,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461499493414387 [2023-08-30 10:06:15,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 911 transitions. [2023-08-30 10:06:15,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 911 transitions. [2023-08-30 10:06:15,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:15,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 911 transitions. [2023-08-30 10:06:15,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:15,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:15,771 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 282.0) internal successors, (2256), 8 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:15,771 INFO L175 Difference]: Start difference. First operand has 138 places, 109 transitions, 1190 flow. Second operand 7 states and 911 transitions. [2023-08-30 10:06:15,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 134 transitions, 1596 flow [2023-08-30 10:06:15,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 1500 flow, removed 13 selfloop flow, removed 11 redundant places. [2023-08-30 10:06:15,782 INFO L231 Difference]: Finished difference. Result has 136 places, 111 transitions, 1289 flow [2023-08-30 10:06:15,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1289, PETRI_PLACES=136, PETRI_TRANSITIONS=111} [2023-08-30 10:06:15,783 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 88 predicate places. [2023-08-30 10:06:15,783 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 111 transitions, 1289 flow [2023-08-30 10:06:15,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:15,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:15,783 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:15,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:06:15,783 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:15,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash 453754838, now seen corresponding path program 2 times [2023-08-30 10:06:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:15,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757988223] [2023-08-30 10:06:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:06:15,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757988223] [2023-08-30 10:06:15,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757988223] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856316348] [2023-08-30 10:06:15,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:06:15,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:15,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:15,945 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 10:06:15,946 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 10:06:16,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:06:16,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:06:16,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 10:06:16,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:16,028 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:06:16,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:06:16,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:06:16,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:06:16,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:06:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:06:16,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:16,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856316348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:16,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:16,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 10:06:16,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668981447] [2023-08-30 10:06:16,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:16,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:06:16,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:16,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:06:16,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:06:16,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 282 [2023-08-30 10:06:16,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 111 transitions, 1289 flow. Second operand has 7 states, 7 states have (on average 120.57142857142857) internal successors, (844), 7 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:16,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:16,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 282 [2023-08-30 10:06:16,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:16,426 INFO L130 PetriNetUnfolder]: 239/757 cut-off events. [2023-08-30 10:06:16,426 INFO L131 PetriNetUnfolder]: For 4790/4807 co-relation queries the response was YES. [2023-08-30 10:06:16,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3752 conditions, 757 events. 239/757 cut-off events. For 4790/4807 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4607 event pairs, 101 based on Foata normal form. 3/758 useless extension candidates. Maximal degree in co-relation 3700. Up to 310 conditions per place. [2023-08-30 10:06:16,429 INFO L137 encePairwiseOnDemand]: 272/282 looper letters, 109 selfloop transitions, 28 changer transitions 2/145 dead transitions. [2023-08-30 10:06:16,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 145 transitions, 1770 flow [2023-08-30 10:06:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:06:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:06:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1028 transitions. [2023-08-30 10:06:16,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45567375886524825 [2023-08-30 10:06:16,430 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1028 transitions. [2023-08-30 10:06:16,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1028 transitions. [2023-08-30 10:06:16,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:16,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1028 transitions. [2023-08-30 10:06:16,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.5) internal successors, (1028), 8 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:16,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 282.0) internal successors, (2538), 9 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:16,433 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 282.0) internal successors, (2538), 9 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:16,433 INFO L175 Difference]: Start difference. First operand has 136 places, 111 transitions, 1289 flow. Second operand 8 states and 1028 transitions. [2023-08-30 10:06:16,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 145 transitions, 1770 flow [2023-08-30 10:06:16,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 145 transitions, 1697 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-30 10:06:16,444 INFO L231 Difference]: Finished difference. Result has 136 places, 110 transitions, 1265 flow [2023-08-30 10:06:16,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1265, PETRI_PLACES=136, PETRI_TRANSITIONS=110} [2023-08-30 10:06:16,445 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 88 predicate places. [2023-08-30 10:06:16,445 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 110 transitions, 1265 flow [2023-08-30 10:06:16,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.57142857142857) internal successors, (844), 7 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:16,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:16,446 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:16,452 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 10:06:16,649 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,SelfDestructingSolverStorable23 [2023-08-30 10:06:16,649 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:16,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash 446762153, now seen corresponding path program 2 times [2023-08-30 10:06:16,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:16,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611074558] [2023-08-30 10:06:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:16,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:06:16,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:16,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611074558] [2023-08-30 10:06:16,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611074558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:16,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588836250] [2023-08-30 10:06:16,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:06:16,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:16,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:16,810 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 10:06:16,837 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 10:06:16,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:06:16,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:06:16,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 10:06:16,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:16,903 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:06:16,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:06:16,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:06:17,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:06:17,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:06:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:06:17,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588836250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:17,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:17,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2023-08-30 10:06:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092404863] [2023-08-30 10:06:17,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:17,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:06:17,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:17,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:06:17,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-30 10:06:17,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 282 [2023-08-30 10:06:17,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 110 transitions, 1265 flow. Second operand has 8 states, 8 states have (on average 116.25) internal successors, (930), 8 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:17,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:17,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 282 [2023-08-30 10:06:17,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:17,425 INFO L130 PetriNetUnfolder]: 238/761 cut-off events. [2023-08-30 10:06:17,425 INFO L131 PetriNetUnfolder]: For 4783/4794 co-relation queries the response was YES. [2023-08-30 10:06:17,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3761 conditions, 761 events. 238/761 cut-off events. For 4783/4794 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4683 event pairs, 109 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3710. Up to 365 conditions per place. [2023-08-30 10:06:17,428 INFO L137 encePairwiseOnDemand]: 272/282 looper letters, 105 selfloop transitions, 34 changer transitions 3/148 dead transitions. [2023-08-30 10:06:17,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 148 transitions, 1793 flow [2023-08-30 10:06:17,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:06:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:06:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 997 transitions. [2023-08-30 10:06:17,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193262411347517 [2023-08-30 10:06:17,430 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 997 transitions. [2023-08-30 10:06:17,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 997 transitions. [2023-08-30 10:06:17,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:17,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 997 transitions. [2023-08-30 10:06:17,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:17,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 282.0) internal successors, (2538), 9 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:17,433 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 282.0) internal successors, (2538), 9 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:17,433 INFO L175 Difference]: Start difference. First operand has 136 places, 110 transitions, 1265 flow. Second operand 8 states and 997 transitions. [2023-08-30 10:06:17,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 148 transitions, 1793 flow [2023-08-30 10:06:17,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 148 transitions, 1732 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-30 10:06:17,444 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 1319 flow [2023-08-30 10:06:17,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1319, PETRI_PLACES=139, PETRI_TRANSITIONS=111} [2023-08-30 10:06:17,444 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 91 predicate places. [2023-08-30 10:06:17,444 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 1319 flow [2023-08-30 10:06:17,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.25) internal successors, (930), 8 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:17,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:17,445 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:17,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-30 10:06:17,649 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,SelfDestructingSolverStorable24 [2023-08-30 10:06:17,650 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:17,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash -91588734, now seen corresponding path program 1 times [2023-08-30 10:06:17,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:17,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642696519] [2023-08-30 10:06:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:17,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642696519] [2023-08-30 10:06:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642696519] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997631419] [2023-08-30 10:06:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:17,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:17,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:17,842 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 10:06:17,843 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 10:06:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:17,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 10:06:17,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:17,937 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:06:17,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:06:17,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:06:18,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:06:18,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:06:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:18,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:06:18,118 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_713 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_713) c_~p~0.base) c_~p~0.offset)))) is different from false [2023-08-30 10:06:18,130 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:06:18,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-08-30 10:06:18,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-08-30 10:06:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:06:18,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997631419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:06:18,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:06:18,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 18 [2023-08-30 10:06:18,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701883516] [2023-08-30 10:06:18,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:06:18,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:06:18,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:18,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:06:18,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=272, Unknown=1, NotChecked=34, Total=380 [2023-08-30 10:06:18,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 282 [2023-08-30 10:06:18,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 111 transitions, 1319 flow. Second operand has 20 states, 20 states have (on average 90.15) internal successors, (1803), 20 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:18,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:18,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 282 [2023-08-30 10:06:18,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:18,679 INFO L130 PetriNetUnfolder]: 235/745 cut-off events. [2023-08-30 10:06:18,679 INFO L131 PetriNetUnfolder]: For 4912/4921 co-relation queries the response was YES. [2023-08-30 10:06:18,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3744 conditions, 745 events. 235/745 cut-off events. For 4912/4921 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4483 event pairs, 39 based on Foata normal form. 7/750 useless extension candidates. Maximal degree in co-relation 3692. Up to 229 conditions per place. [2023-08-30 10:06:18,682 INFO L137 encePairwiseOnDemand]: 266/282 looper letters, 81 selfloop transitions, 21 changer transitions 55/163 dead transitions. [2023-08-30 10:06:18,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 163 transitions, 1953 flow [2023-08-30 10:06:18,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:06:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:06:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1585 transitions. [2023-08-30 10:06:18,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3306216103462662 [2023-08-30 10:06:18,683 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1585 transitions. [2023-08-30 10:06:18,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1585 transitions. [2023-08-30 10:06:18,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:18,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1585 transitions. [2023-08-30 10:06:18,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 93.23529411764706) internal successors, (1585), 17 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:18,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 282.0) internal successors, (5076), 18 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:18,689 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 282.0) internal successors, (5076), 18 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:18,689 INFO L175 Difference]: Start difference. First operand has 139 places, 111 transitions, 1319 flow. Second operand 17 states and 1585 transitions. [2023-08-30 10:06:18,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 163 transitions, 1953 flow [2023-08-30 10:06:18,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 163 transitions, 1908 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-30 10:06:18,699 INFO L231 Difference]: Finished difference. Result has 146 places, 80 transitions, 865 flow [2023-08-30 10:06:18,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=865, PETRI_PLACES=146, PETRI_TRANSITIONS=80} [2023-08-30 10:06:18,700 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 98 predicate places. [2023-08-30 10:06:18,700 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 80 transitions, 865 flow [2023-08-30 10:06:18,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 90.15) internal successors, (1803), 20 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:18,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:18,701 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:18,709 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 10:06:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 10:06:18,907 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:18,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1948630017, now seen corresponding path program 1 times [2023-08-30 10:06:18,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:18,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980405608] [2023-08-30 10:06:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:18,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:06:18,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:18,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980405608] [2023-08-30 10:06:18,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980405608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:18,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:18,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:06:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919546064] [2023-08-30 10:06:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:18,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:06:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:06:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:06:19,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 282 [2023-08-30 10:06:19,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 80 transitions, 865 flow. Second operand has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:19,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 282 [2023-08-30 10:06:19,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:19,187 INFO L130 PetriNetUnfolder]: 89/346 cut-off events. [2023-08-30 10:06:19,187 INFO L131 PetriNetUnfolder]: For 1940/1943 co-relation queries the response was YES. [2023-08-30 10:06:19,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 346 events. 89/346 cut-off events. For 1940/1943 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1710 event pairs, 56 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 1645. Up to 181 conditions per place. [2023-08-30 10:06:19,188 INFO L137 encePairwiseOnDemand]: 271/282 looper letters, 41 selfloop transitions, 18 changer transitions 33/98 dead transitions. [2023-08-30 10:06:19,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 98 transitions, 1163 flow [2023-08-30 10:06:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:06:19,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:06:19,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1215 transitions. [2023-08-30 10:06:19,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308510638297872 [2023-08-30 10:06:19,189 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1215 transitions. [2023-08-30 10:06:19,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1215 transitions. [2023-08-30 10:06:19,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:19,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1215 transitions. [2023-08-30 10:06:19,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.5) internal successors, (1215), 10 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 282.0) internal successors, (3102), 11 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,206 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 282.0) internal successors, (3102), 11 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,206 INFO L175 Difference]: Start difference. First operand has 146 places, 80 transitions, 865 flow. Second operand 10 states and 1215 transitions. [2023-08-30 10:06:19,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 98 transitions, 1163 flow [2023-08-30 10:06:19,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 98 transitions, 1004 flow, removed 6 selfloop flow, removed 27 redundant places. [2023-08-30 10:06:19,211 INFO L231 Difference]: Finished difference. Result has 119 places, 56 transitions, 513 flow [2023-08-30 10:06:19,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=513, PETRI_PLACES=119, PETRI_TRANSITIONS=56} [2023-08-30 10:06:19,211 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 71 predicate places. [2023-08-30 10:06:19,212 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 56 transitions, 513 flow [2023-08-30 10:06:19,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:19,212 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:19,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 10:06:19,212 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:19,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:19,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1327560490, now seen corresponding path program 2 times [2023-08-30 10:06:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:19,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695994800] [2023-08-30 10:06:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:06:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:19,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695994800] [2023-08-30 10:06:19,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695994800] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359638471] [2023-08-30 10:06:19,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:06:19,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:19,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:19,402 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 10:06:19,404 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 10:06:19,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:06:19,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:06:19,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 10:06:19,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:19,500 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:06:19,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:06:19,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:06:19,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-08-30 10:06:19,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:06:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 10:06:19,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:19,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359638471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:19,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:19,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-30 10:06:19,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134579161] [2023-08-30 10:06:19,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:19,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:06:19,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:06:19,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-08-30 10:06:19,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 282 [2023-08-30 10:06:19,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 56 transitions, 513 flow. Second operand has 8 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:19,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 282 [2023-08-30 10:06:19,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:19,934 INFO L130 PetriNetUnfolder]: 75/280 cut-off events. [2023-08-30 10:06:19,935 INFO L131 PetriNetUnfolder]: For 1094/1102 co-relation queries the response was YES. [2023-08-30 10:06:19,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 280 events. 75/280 cut-off events. For 1094/1102 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1259 event pairs, 42 based on Foata normal form. 2/280 useless extension candidates. Maximal degree in co-relation 1228. Up to 133 conditions per place. [2023-08-30 10:06:19,935 INFO L137 encePairwiseOnDemand]: 272/282 looper letters, 20 selfloop transitions, 5 changer transitions 45/75 dead transitions. [2023-08-30 10:06:19,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 75 transitions, 762 flow [2023-08-30 10:06:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:06:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:06:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1183 transitions. [2023-08-30 10:06:19,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195035460992908 [2023-08-30 10:06:19,937 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1183 transitions. [2023-08-30 10:06:19,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1183 transitions. [2023-08-30 10:06:19,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:19,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1183 transitions. [2023-08-30 10:06:19,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.3) internal successors, (1183), 10 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 282.0) internal successors, (3102), 11 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,940 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 282.0) internal successors, (3102), 11 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,940 INFO L175 Difference]: Start difference. First operand has 119 places, 56 transitions, 513 flow. Second operand 10 states and 1183 transitions. [2023-08-30 10:06:19,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 75 transitions, 762 flow [2023-08-30 10:06:19,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 75 transitions, 630 flow, removed 6 selfloop flow, removed 26 redundant places. [2023-08-30 10:06:19,943 INFO L231 Difference]: Finished difference. Result has 91 places, 29 transitions, 185 flow [2023-08-30 10:06:19,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=185, PETRI_PLACES=91, PETRI_TRANSITIONS=29} [2023-08-30 10:06:19,943 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 43 predicate places. [2023-08-30 10:06:19,943 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 29 transitions, 185 flow [2023-08-30 10:06:19,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:19,944 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:19,949 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 10:06:20,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-30 10:06:20,148 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:06:20,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2145360486, now seen corresponding path program 1 times [2023-08-30 10:06:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852620116] [2023-08-30 10:06:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:20,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:20,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:20,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852620116] [2023-08-30 10:06:20,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852620116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:20,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3252736] [2023-08-30 10:06:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:20,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:20,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:20,192 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 10:06:20,194 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 10:06:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:20,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:06:20,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:20,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:06:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:06:20,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3252736] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:06:20,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:06:20,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-30 10:06:20,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810588771] [2023-08-30 10:06:20,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:06:20,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:06:20,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:20,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:06:20,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:06:20,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 282 [2023-08-30 10:06:20,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 29 transitions, 185 flow. Second operand has 9 states, 9 states have (on average 129.22222222222223) internal successors, (1163), 9 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:20,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 282 [2023-08-30 10:06:20,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:20,367 INFO L130 PetriNetUnfolder]: 7/31 cut-off events. [2023-08-30 10:06:20,367 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-08-30 10:06:20,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 31 events. 7/31 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 7/38 useless extension candidates. Maximal degree in co-relation 131. Up to 15 conditions per place. [2023-08-30 10:06:20,368 INFO L137 encePairwiseOnDemand]: 279/282 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-30 10:06:20,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 22 transitions, 189 flow [2023-08-30 10:06:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:06:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:06:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 643 transitions. [2023-08-30 10:06:20,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45602836879432623 [2023-08-30 10:06:20,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 643 transitions. [2023-08-30 10:06:20,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 643 transitions. [2023-08-30 10:06:20,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:20,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 643 transitions. [2023-08-30 10:06:20,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,373 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,373 INFO L175 Difference]: Start difference. First operand has 91 places, 29 transitions, 185 flow. Second operand 5 states and 643 transitions. [2023-08-30 10:06:20,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 22 transitions, 189 flow [2023-08-30 10:06:20,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 110 flow, removed 3 selfloop flow, removed 22 redundant places. [2023-08-30 10:06:20,374 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-08-30 10:06:20,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-08-30 10:06:20,376 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -15 predicate places. [2023-08-30 10:06:20,377 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-08-30 10:06:20,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 129.22222222222223) internal successors, (1163), 9 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-08-30 10:06:20,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-30 10:06:20,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-30 10:06:20,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-30 10:06:20,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-30 10:06:20,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-30 10:06:20,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-30 10:06:20,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-30 10:06:20,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-30 10:06:20,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-30 10:06:20,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-30 10:06:20,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-30 10:06:20,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-30 10:06:20,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-30 10:06:20,382 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 10:06:20,578 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,SelfDestructingSolverStorable28 [2023-08-30 10:06:20,578 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:20,579 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:06:20,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 149 transitions, 310 flow [2023-08-30 10:06:20,591 INFO L130 PetriNetUnfolder]: 24/212 cut-off events. [2023-08-30 10:06:20,591 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:06:20,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 24/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 601 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-08-30 10:06:20,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 149 transitions, 310 flow [2023-08-30 10:06:20,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 149 transitions, 310 flow [2023-08-30 10:06:20,593 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:06:20,593 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 149 transitions, 310 flow [2023-08-30 10:06:20,593 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 149 transitions, 310 flow [2023-08-30 10:06:20,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 149 transitions, 310 flow [2023-08-30 10:06:20,603 INFO L130 PetriNetUnfolder]: 24/212 cut-off events. [2023-08-30 10:06:20,603 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:06:20,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 24/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 601 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-08-30 10:06:20,607 INFO L119 LiptonReduction]: Number of co-enabled transitions 9200 [2023-08-30 10:06:23,110 INFO L134 LiptonReduction]: Checked pairs total: 20195 [2023-08-30 10:06:23,110 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-30 10:06:23,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:06:23,112 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;@76e9fe84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:06:23,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:06:23,115 INFO L130 PetriNetUnfolder]: 10/55 cut-off events. [2023-08-30 10:06:23,115 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:06:23,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:23,115 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 10:06:23,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:06:23,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:23,116 INFO L85 PathProgramCache]: Analyzing trace with hash -498509694, now seen corresponding path program 1 times [2023-08-30 10:06:23,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:23,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994302569] [2023-08-30 10:06:23,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:23,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:06:23,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:06:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:06:23,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:06:23,128 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:06:23,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:06:23,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:06:23,129 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:06:23,129 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:06:23,129 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:06:23,129 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 10:06:23,139 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 10:06:23,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 190 transitions, 401 flow [2023-08-30 10:06:23,155 INFO L130 PetriNetUnfolder]: 34/289 cut-off events. [2023-08-30 10:06:23,155 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 10:06:23,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 289 events. 34/289 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 898 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-30 10:06:23,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 190 transitions, 401 flow [2023-08-30 10:06:23,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 190 transitions, 401 flow [2023-08-30 10:06:23,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:06:23,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 190 transitions, 401 flow [2023-08-30 10:06:23,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 190 transitions, 401 flow [2023-08-30 10:06:23,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 190 transitions, 401 flow [2023-08-30 10:06:23,172 INFO L130 PetriNetUnfolder]: 34/289 cut-off events. [2023-08-30 10:06:23,173 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 10:06:23,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 289 events. 34/289 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 898 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-30 10:06:23,181 INFO L119 LiptonReduction]: Number of co-enabled transitions 18720 [2023-08-30 10:06:25,696 INFO L134 LiptonReduction]: Checked pairs total: 43735 [2023-08-30 10:06:25,700 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-30 10:06:25,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:06:25,703 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;@76e9fe84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:06:25,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 10:06:25,705 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 10:06:25,705 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:06:25,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:25,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:06:25,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:06:25,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:25,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1317192223, now seen corresponding path program 1 times [2023-08-30 10:06:25,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:25,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592496295] [2023-08-30 10:06:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:25,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:25,721 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 10:06:25,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:25,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592496295] [2023-08-30 10:06:25,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592496295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:25,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:25,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:06:25,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845526225] [2023-08-30 10:06:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:25,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:25,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:25,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 352 [2023-08-30 10:06:25,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 79 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:25,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:25,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 352 [2023-08-30 10:06:25,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:30,025 INFO L130 PetriNetUnfolder]: 69040/97048 cut-off events. [2023-08-30 10:06:30,026 INFO L131 PetriNetUnfolder]: For 1261/1261 co-relation queries the response was YES. [2023-08-30 10:06:30,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193449 conditions, 97048 events. 69040/97048 cut-off events. For 1261/1261 co-relation queries the response was YES. Maximal size of possible extension queue 3527. Compared 720642 event pairs, 44668 based on Foata normal form. 11244/77089 useless extension candidates. Maximal degree in co-relation 18881. Up to 95444 conditions per place. [2023-08-30 10:06:30,546 INFO L137 encePairwiseOnDemand]: 327/352 looper letters, 63 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-30 10:06:30,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 297 flow [2023-08-30 10:06:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-30 10:06:30,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435606060606061 [2023-08-30 10:06:30,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-30 10:06:30,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-30 10:06:30,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:30,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-30 10:06:30,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:30,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:30,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:30,549 INFO L175 Difference]: Start difference. First operand has 66 places, 79 transitions, 179 flow. Second operand 3 states and 574 transitions. [2023-08-30 10:06:30,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 297 flow [2023-08-30 10:06:30,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 291 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-30 10:06:30,550 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 149 flow [2023-08-30 10:06:30,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2023-08-30 10:06:30,551 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-30 10:06:30,551 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 149 flow [2023-08-30 10:06:30,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:30,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:30,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:30,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 10:06:30,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:06:30,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:30,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1185324324, now seen corresponding path program 1 times [2023-08-30 10:06:30,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:30,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156389093] [2023-08-30 10:06:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:30,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:30,637 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 10:06:30,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:30,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156389093] [2023-08-30 10:06:30,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156389093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:30,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:30,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174809572] [2023-08-30 10:06:30,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:30,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:30,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:30,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:06:30,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 352 [2023-08-30 10:06:30,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:30,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:30,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 352 [2023-08-30 10:06:30,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:34,904 INFO L130 PetriNetUnfolder]: 65738/91393 cut-off events. [2023-08-30 10:06:34,904 INFO L131 PetriNetUnfolder]: For 6151/6151 co-relation queries the response was YES. [2023-08-30 10:06:35,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194135 conditions, 91393 events. 65738/91393 cut-off events. For 6151/6151 co-relation queries the response was YES. Maximal size of possible extension queue 3686. Compared 661725 event pairs, 32321 based on Foata normal form. 0/65281 useless extension candidates. Maximal degree in co-relation 194051. Up to 89693 conditions per place. [2023-08-30 10:06:35,282 INFO L137 encePairwiseOnDemand]: 341/352 looper letters, 75 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2023-08-30 10:06:35,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 398 flow [2023-08-30 10:06:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:06:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:06:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 701 transitions. [2023-08-30 10:06:35,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978693181818182 [2023-08-30 10:06:35,284 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 701 transitions. [2023-08-30 10:06:35,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 701 transitions. [2023-08-30 10:06:35,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:35,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 701 transitions. [2023-08-30 10:06:35,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:35,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:35,286 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:35,286 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 149 flow. Second operand 4 states and 701 transitions. [2023-08-30 10:06:35,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 398 flow [2023-08-30 10:06:35,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 91 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:35,291 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 218 flow [2023-08-30 10:06:35,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-08-30 10:06:35,291 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2023-08-30 10:06:35,291 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 218 flow [2023-08-30 10:06:35,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:35,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:35,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:06:35,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 10:06:35,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:06:35,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:35,292 INFO L85 PathProgramCache]: Analyzing trace with hash -230347572, now seen corresponding path program 1 times [2023-08-30 10:06:35,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:35,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435314276] [2023-08-30 10:06:35,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:35,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:35,314 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 10:06:35,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:35,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435314276] [2023-08-30 10:06:35,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435314276] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:35,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825633528] [2023-08-30 10:06:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:35,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:35,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:35,316 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:06:35,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:06:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:35,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:06:35,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:35,409 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 10:06:35,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:35,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825633528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:35,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:35,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 10:06:35,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644387766] [2023-08-30 10:06:35,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:35,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:06:35,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:35,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:06:35,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:06:35,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 352 [2023-08-30 10:06:35,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:35,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:35,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 352 [2023-08-30 10:06:35,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:39,577 INFO L130 PetriNetUnfolder]: 58151/81167 cut-off events. [2023-08-30 10:06:39,577 INFO L131 PetriNetUnfolder]: For 24304/24783 co-relation queries the response was YES. [2023-08-30 10:06:39,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195000 conditions, 81167 events. 58151/81167 cut-off events. For 24304/24783 co-relation queries the response was YES. Maximal size of possible extension queue 3181. Compared 578112 event pairs, 51871 based on Foata normal form. 0/64020 useless extension candidates. Maximal degree in co-relation 135614. Up to 80561 conditions per place. [2023-08-30 10:06:40,115 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 67 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 10:06:40,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 377 flow [2023-08-30 10:06:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:06:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:06:40,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 703 transitions. [2023-08-30 10:06:40,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992897727272727 [2023-08-30 10:06:40,116 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 703 transitions. [2023-08-30 10:06:40,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 703 transitions. [2023-08-30 10:06:40,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:40,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 703 transitions. [2023-08-30 10:06:40,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:40,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:40,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:40,118 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 218 flow. Second operand 4 states and 703 transitions. [2023-08-30 10:06:40,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 377 flow [2023-08-30 10:06:40,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 377 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:06:40,136 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 218 flow [2023-08-30 10:06:40,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-08-30 10:06:40,137 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2023-08-30 10:06:40,137 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 218 flow [2023-08-30 10:06:40,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:40,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:40,137 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:06:40,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:06:40,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:40,347 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:06:40,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:40,348 INFO L85 PathProgramCache]: Analyzing trace with hash -230347535, now seen corresponding path program 1 times [2023-08-30 10:06:40,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:40,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315116055] [2023-08-30 10:06:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:40,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:40,364 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 10:06:40,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:40,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315116055] [2023-08-30 10:06:40,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315116055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:40,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:40,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:40,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842313795] [2023-08-30 10:06:40,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:40,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:40,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:40,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:40,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:40,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 352 [2023-08-30 10:06:40,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:40,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:40,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 352 [2023-08-30 10:06:40,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:43,987 INFO L130 PetriNetUnfolder]: 50564/70401 cut-off events. [2023-08-30 10:06:43,987 INFO L131 PetriNetUnfolder]: For 20015/20255 co-relation queries the response was YES. [2023-08-30 10:06:44,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168408 conditions, 70401 events. 50564/70401 cut-off events. For 20015/20255 co-relation queries the response was YES. Maximal size of possible extension queue 2735. Compared 489798 event pairs, 18616 based on Foata normal form. 2/58021 useless extension candidates. Maximal degree in co-relation 163269. Up to 52006 conditions per place. [2023-08-30 10:06:44,438 INFO L137 encePairwiseOnDemand]: 348/352 looper letters, 96 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2023-08-30 10:06:44,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 539 flow [2023-08-30 10:06:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-08-30 10:06:44,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369318181818182 [2023-08-30 10:06:44,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-08-30 10:06:44,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-08-30 10:06:44,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:44,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-08-30 10:06:44,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:44,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:44,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:44,444 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 218 flow. Second operand 3 states and 567 transitions. [2023-08-30 10:06:44,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 539 flow [2023-08-30 10:06:44,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 108 transitions, 536 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:06:44,462 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 227 flow [2023-08-30 10:06:44,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-08-30 10:06:44,462 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2023-08-30 10:06:44,462 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 227 flow [2023-08-30 10:06:44,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:44,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:44,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:44,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 10:06:44,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:06:44,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:44,463 INFO L85 PathProgramCache]: Analyzing trace with hash -712403128, now seen corresponding path program 1 times [2023-08-30 10:06:44,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:44,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399313529] [2023-08-30 10:06:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:44,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:44,489 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 10:06:44,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:44,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399313529] [2023-08-30 10:06:44,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399313529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:44,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:44,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:44,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278224677] [2023-08-30 10:06:44,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:44,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:44,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:44,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:44,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:44,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 352 [2023-08-30 10:06:44,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:44,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:44,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 352 [2023-08-30 10:06:44,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:50,552 INFO L130 PetriNetUnfolder]: 76214/109540 cut-off events. [2023-08-30 10:06:50,553 INFO L131 PetriNetUnfolder]: For 57469/57802 co-relation queries the response was YES. [2023-08-30 10:06:50,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271557 conditions, 109540 events. 76214/109540 cut-off events. For 57469/57802 co-relation queries the response was YES. Maximal size of possible extension queue 4054. Compared 840304 event pairs, 28215 based on Foata normal form. 18/93166 useless extension candidates. Maximal degree in co-relation 271460. Up to 62775 conditions per place. [2023-08-30 10:06:51,111 INFO L137 encePairwiseOnDemand]: 334/352 looper letters, 88 selfloop transitions, 22 changer transitions 0/118 dead transitions. [2023-08-30 10:06:51,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 631 flow [2023-08-30 10:06:51,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-08-30 10:06:51,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2023-08-30 10:06:51,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-08-30 10:06:51,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-08-30 10:06:51,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:51,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-08-30 10:06:51,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:51,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:51,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:51,114 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 227 flow. Second operand 3 states and 564 transitions. [2023-08-30 10:06:51,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 631 flow [2023-08-30 10:06:51,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 624 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:51,148 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 435 flow [2023-08-30 10:06:51,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=435, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2023-08-30 10:06:51,148 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2023-08-30 10:06:51,148 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 435 flow [2023-08-30 10:06:51,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:51,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:51,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:51,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 10:06:51,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:06:51,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash -712403140, now seen corresponding path program 1 times [2023-08-30 10:06:51,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:51,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731005292] [2023-08-30 10:06:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:51,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:51,236 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 10:06:51,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:51,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731005292] [2023-08-30 10:06:51,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731005292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:51,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:51,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:06:51,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23661714] [2023-08-30 10:06:51,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:51,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:06:51,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:51,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:06:51,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:06:51,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 352 [2023-08-30 10:06:51,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 435 flow. Second operand has 7 states, 7 states have (on average 151.28571428571428) internal successors, (1059), 7 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:51,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:51,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 352 [2023-08-30 10:06:51,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:00,191 INFO L130 PetriNetUnfolder]: 96109/141497 cut-off events. [2023-08-30 10:07:00,191 INFO L131 PetriNetUnfolder]: For 158243/158903 co-relation queries the response was YES. [2023-08-30 10:07:00,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403648 conditions, 141497 events. 96109/141497 cut-off events. For 158243/158903 co-relation queries the response was YES. Maximal size of possible extension queue 5550. Compared 1156619 event pairs, 21297 based on Foata normal form. 4918/146033 useless extension candidates. Maximal degree in co-relation 403550. Up to 95855 conditions per place. [2023-08-30 10:07:01,159 INFO L137 encePairwiseOnDemand]: 330/352 looper letters, 225 selfloop transitions, 67 changer transitions 0/300 dead transitions. [2023-08-30 10:07:01,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 300 transitions, 1930 flow [2023-08-30 10:07:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:07:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:07:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1753 transitions. [2023-08-30 10:07:01,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980113636363636 [2023-08-30 10:07:01,161 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1753 transitions. [2023-08-30 10:07:01,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1753 transitions. [2023-08-30 10:07:01,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:01,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1753 transitions. [2023-08-30 10:07:01,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 175.3) internal successors, (1753), 10 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:01,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 352.0) internal successors, (3872), 11 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:01,164 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 352.0) internal successors, (3872), 11 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:01,164 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 435 flow. Second operand 10 states and 1753 transitions. [2023-08-30 10:07:01,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 300 transitions, 1930 flow [2023-08-30 10:07:01,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 300 transitions, 1810 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:07:01,296 INFO L231 Difference]: Finished difference. Result has 92 places, 141 transitions, 1055 flow [2023-08-30 10:07:01,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1055, PETRI_PLACES=92, PETRI_TRANSITIONS=141} [2023-08-30 10:07:01,296 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 26 predicate places. [2023-08-30 10:07:01,296 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 141 transitions, 1055 flow [2023-08-30 10:07:01,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 151.28571428571428) internal successors, (1059), 7 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:01,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:01,297 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:01,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 10:07:01,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:07:01,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:01,297 INFO L85 PathProgramCache]: Analyzing trace with hash 575148790, now seen corresponding path program 1 times [2023-08-30 10:07:01,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:01,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985306017] [2023-08-30 10:07:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:01,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:07:01,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:01,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985306017] [2023-08-30 10:07:01,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985306017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:07:01,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644908205] [2023-08-30 10:07:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:01,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:07:01,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:07:01,453 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:07:01,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:07:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:01,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 10:07:01,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:07:01,552 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:07:01,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:07:01,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:07:01,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:07:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:07:01,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:07:01,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644908205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:01,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:07:01,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2023-08-30 10:07:01,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050745488] [2023-08-30 10:07:01,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:01,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:07:01,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:07:01,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:07:01,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 352 [2023-08-30 10:07:01,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 141 transitions, 1055 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:01,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:01,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 352 [2023-08-30 10:07:01,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:12,783 INFO L130 PetriNetUnfolder]: 102379/152554 cut-off events. [2023-08-30 10:07:12,783 INFO L131 PetriNetUnfolder]: For 333015/338043 co-relation queries the response was YES. [2023-08-30 10:07:13,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510334 conditions, 152554 events. 102379/152554 cut-off events. For 333015/338043 co-relation queries the response was YES. Maximal size of possible extension queue 6071. Compared 1294342 event pairs, 38969 based on Foata normal form. 1449/153330 useless extension candidates. Maximal degree in co-relation 510226. Up to 86323 conditions per place. [2023-08-30 10:07:14,107 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 277 selfloop transitions, 52 changer transitions 0/337 dead transitions. [2023-08-30 10:07:14,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 337 transitions, 3038 flow [2023-08-30 10:07:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:07:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:07:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 925 transitions. [2023-08-30 10:07:14,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255681818181818 [2023-08-30 10:07:14,108 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 925 transitions. [2023-08-30 10:07:14,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 925 transitions. [2023-08-30 10:07:14,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:14,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 925 transitions. [2023-08-30 10:07:14,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:14,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:14,111 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:14,111 INFO L175 Difference]: Start difference. First operand has 92 places, 141 transitions, 1055 flow. Second operand 5 states and 925 transitions. [2023-08-30 10:07:14,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 337 transitions, 3038 flow [2023-08-30 10:07:15,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 337 transitions, 2949 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-08-30 10:07:15,813 INFO L231 Difference]: Finished difference. Result has 97 places, 173 transitions, 1527 flow [2023-08-30 10:07:15,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1527, PETRI_PLACES=97, PETRI_TRANSITIONS=173} [2023-08-30 10:07:15,814 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 31 predicate places. [2023-08-30 10:07:15,814 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 173 transitions, 1527 flow [2023-08-30 10:07:15,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:15,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:15,814 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:15,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 10:07:16,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-30 10:07:16,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:07:16,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash 575148778, now seen corresponding path program 1 times [2023-08-30 10:07:16,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:16,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007148778] [2023-08-30 10:07:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:16,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:07:16,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:16,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007148778] [2023-08-30 10:07:16,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007148778] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:07:16,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977098519] [2023-08-30 10:07:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:16,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:07:16,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:07:16,108 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:07:16,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:07:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:16,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:07:16,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:07:16,203 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:07:16,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:07:16,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:07:16,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:07:16,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:07:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:07:16,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:07:16,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977098519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:16,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:07:16,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 10:07:16,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146965170] [2023-08-30 10:07:16,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:16,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:07:16,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:16,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:07:16,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:07:16,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 352 [2023-08-30 10:07:16,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 173 transitions, 1527 flow. Second operand has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:16,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:16,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 352 [2023-08-30 10:07:16,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:27,621 INFO L130 PetriNetUnfolder]: 99796/148463 cut-off events. [2023-08-30 10:07:27,621 INFO L131 PetriNetUnfolder]: For 448367/448956 co-relation queries the response was YES. [2023-08-30 10:07:28,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540074 conditions, 148463 events. 99796/148463 cut-off events. For 448367/448956 co-relation queries the response was YES. Maximal size of possible extension queue 5947. Compared 1243998 event pairs, 37968 based on Foata normal form. 502/148546 useless extension candidates. Maximal degree in co-relation 539962. Up to 139429 conditions per place. [2023-08-30 10:07:28,727 INFO L137 encePairwiseOnDemand]: 342/352 looper letters, 216 selfloop transitions, 43 changer transitions 0/267 dead transitions. [2023-08-30 10:07:28,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 267 transitions, 2679 flow [2023-08-30 10:07:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:07:28,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:07:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1026 transitions. [2023-08-30 10:07:28,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48579545454545453 [2023-08-30 10:07:28,728 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1026 transitions. [2023-08-30 10:07:28,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1026 transitions. [2023-08-30 10:07:28,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:28,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1026 transitions. [2023-08-30 10:07:28,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:28,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:28,730 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:28,730 INFO L175 Difference]: Start difference. First operand has 97 places, 173 transitions, 1527 flow. Second operand 6 states and 1026 transitions. [2023-08-30 10:07:28,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 267 transitions, 2679 flow [2023-08-30 10:07:33,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 267 transitions, 2673 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-30 10:07:33,545 INFO L231 Difference]: Finished difference. Result has 104 places, 202 transitions, 1986 flow [2023-08-30 10:07:33,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1986, PETRI_PLACES=104, PETRI_TRANSITIONS=202} [2023-08-30 10:07:33,546 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 38 predicate places. [2023-08-30 10:07:33,546 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 202 transitions, 1986 flow [2023-08-30 10:07:33,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:33,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:33,546 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:33,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 10:07:33,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-30 10:07:33,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:07:33,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:33,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1450276950, now seen corresponding path program 1 times [2023-08-30 10:07:33,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:33,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771111525] [2023-08-30 10:07:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:33,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:07:33,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:33,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771111525] [2023-08-30 10:07:33,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771111525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:33,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:33,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:07:33,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921533471] [2023-08-30 10:07:33,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:33,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:07:33,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:33,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:07:33,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:07:33,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 352 [2023-08-30 10:07:33,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 202 transitions, 1986 flow. Second operand has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:33,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:33,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 352 [2023-08-30 10:07:33,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:45,430 INFO L130 PetriNetUnfolder]: 98419/147259 cut-off events. [2023-08-30 10:07:45,430 INFO L131 PetriNetUnfolder]: For 534970/539123 co-relation queries the response was YES. [2023-08-30 10:07:46,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548271 conditions, 147259 events. 98419/147259 cut-off events. For 534970/539123 co-relation queries the response was YES. Maximal size of possible extension queue 5820. Compared 1250323 event pairs, 27138 based on Foata normal form. 2460/148774 useless extension candidates. Maximal degree in co-relation 548151. Up to 81410 conditions per place. [2023-08-30 10:07:46,822 INFO L137 encePairwiseOnDemand]: 333/352 looper letters, 296 selfloop transitions, 133 changer transitions 0/437 dead transitions. [2023-08-30 10:07:46,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 437 transitions, 4909 flow [2023-08-30 10:07:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:07:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:07:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 915 transitions. [2023-08-30 10:07:46,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198863636363636 [2023-08-30 10:07:46,824 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 915 transitions. [2023-08-30 10:07:46,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 915 transitions. [2023-08-30 10:07:46,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:46,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 915 transitions. [2023-08-30 10:07:46,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:46,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:46,826 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:46,826 INFO L175 Difference]: Start difference. First operand has 104 places, 202 transitions, 1986 flow. Second operand 5 states and 915 transitions. [2023-08-30 10:07:46,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 437 transitions, 4909 flow [2023-08-30 10:07:50,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 437 transitions, 4829 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-08-30 10:07:50,844 INFO L231 Difference]: Finished difference. Result has 110 places, 285 transitions, 3555 flow [2023-08-30 10:07:50,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3555, PETRI_PLACES=110, PETRI_TRANSITIONS=285} [2023-08-30 10:07:50,844 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2023-08-30 10:07:50,844 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 285 transitions, 3555 flow [2023-08-30 10:07:50,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:50,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:50,844 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:50,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 10:07:50,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:07:50,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:50,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1450276949, now seen corresponding path program 1 times [2023-08-30 10:07:50,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:50,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083404792] [2023-08-30 10:07:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:50,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:07:50,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:50,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083404792] [2023-08-30 10:07:50,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083404792] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:07:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406090097] [2023-08-30 10:07:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:50,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:07:50,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:07:50,910 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:07:50,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:07:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:51,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 10:07:51,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:07:51,013 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:07:51,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:07:51,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:07:51,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:07:51,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:07:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:07:51,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:07:51,159 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1069 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~p~0.base) c_~p~0.offset)))) is different from false [2023-08-30 10:07:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 10:07:51,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406090097] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:07:51,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:07:51,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 10:07:51,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941983697] [2023-08-30 10:07:51,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:07:51,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:07:51,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:51,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:07:51,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=112, Unknown=1, NotChecked=22, Total=182 [2023-08-30 10:07:51,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 352 [2023-08-30 10:07:51,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 285 transitions, 3555 flow. Second operand has 14 states, 14 states have (on average 127.78571428571429) internal successors, (1789), 14 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:51,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:51,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 352 [2023-08-30 10:07:51,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand