./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.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_60-invariant_racefree.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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --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 10:12:09,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:12:09,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:12:09,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:12:09,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:12:09,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:12:09,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:12:09,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:12:09,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:12:09,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:12:09,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:12:09,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:12:09,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:12:09,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:12:09,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:12:09,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:12:09,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:12:09,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:12:09,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:12:09,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:12:09,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:12:09,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:12:09,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:12:09,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:12:09,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:12:09,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:12:09,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:12:09,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:12:09,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:12:09,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:12:09,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:12:09,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:12:09,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:12:09,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:12:09,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:12:09,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:12:09,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:12:09,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:12:09,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:12:09,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:12:09,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:12:09,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:12:09,663 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:12:09,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:12:09,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:12:09,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:12:09,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:12:09,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:12:09,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:12:09,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:12:09,666 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:12:09,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:12:09,667 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:12:09,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:12:09,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:12:09,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:12:09,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:12:09,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:12:09,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:12:09,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:12:09,668 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:12:09,669 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:12:09,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:12:09,669 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:12:09,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:12:09,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:12:09,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:12:09,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:12:09,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:12:09,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:12:09,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:12:09,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:12:09,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:12:09,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:12:09,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:12:09,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:12:09,671 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:12:09,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:12:09,672 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:12:09,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:12:09,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:12:09,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:12:09,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:12:09,998 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:12:09,998 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:12:09,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-30 10:12:11,149 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:12:11,396 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:12:11,402 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-30 10:12:11,418 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4797b7911/4460477136574c5ca80a771d45c65997/FLAG24f87f161 [2023-08-30 10:12:11,431 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4797b7911/4460477136574c5ca80a771d45c65997 [2023-08-30 10:12:11,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:12:11,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:12:11,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:12:11,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:12:11,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:12:11,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e7abdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11, skipping insertion in model container [2023-08-30 10:12:11,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:12:11,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:12:11,728 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_60-invariant_racefree.i[30176,30189] [2023-08-30 10:12:11,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:12:11,770 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:12:11,815 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_60-invariant_racefree.i[30176,30189] [2023-08-30 10:12:11,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:12:11,877 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:12:11,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11 WrapperNode [2023-08-30 10:12:11,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:12:11,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:12:11,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:12:11,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:12:11,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,940 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 153 [2023-08-30 10:12:11,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:12:11,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:12:11,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:12:11,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:12:11,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,986 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:11,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:12:12,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:12:12,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:12:12,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:12:12,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (1/1) ... [2023-08-30 10:12:12,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:12:12,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:12:12,029 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 10:12:12,072 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 10:12:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:12:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:12:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:12:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:12:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:12:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:12:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:12:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:12:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:12:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:12:12,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:12:12,084 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 10:12:12,183 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:12:12,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:12:12,405 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:12:12,412 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:12:12,412 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-30 10:12:12,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:12:12 BoogieIcfgContainer [2023-08-30 10:12:12,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:12:12,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:12:12,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:12:12,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:12:12,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:12:11" (1/3) ... [2023-08-30 10:12:12,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdc665e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:12:12, skipping insertion in model container [2023-08-30 10:12:12,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:12:11" (2/3) ... [2023-08-30 10:12:12,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdc665e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:12:12, skipping insertion in model container [2023-08-30 10:12:12,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:12:12" (3/3) ... [2023-08-30 10:12:12,422 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-08-30 10:12:12,428 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:12:12,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:12:12,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 10:12:12,437 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:12:12,556 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:12:12,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 160 transitions, 328 flow [2023-08-30 10:12:12,677 INFO L130 PetriNetUnfolder]: 33/222 cut-off events. [2023-08-30 10:12:12,678 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:12:12,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 222 events. 33/222 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 755 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place. [2023-08-30 10:12:12,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 160 transitions, 328 flow [2023-08-30 10:12:12,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 157 transitions, 322 flow [2023-08-30 10:12:12,700 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:12:12,708 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 157 transitions, 322 flow [2023-08-30 10:12:12,710 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 157 transitions, 322 flow [2023-08-30 10:12:12,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 157 transitions, 322 flow [2023-08-30 10:12:12,755 INFO L130 PetriNetUnfolder]: 32/219 cut-off events. [2023-08-30 10:12:12,756 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:12:12,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 219 events. 32/219 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 765 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place. [2023-08-30 10:12:12,761 INFO L119 LiptonReduction]: Number of co-enabled transitions 7488 [2023-08-30 10:12:15,348 INFO L134 LiptonReduction]: Checked pairs total: 19622 [2023-08-30 10:12:15,348 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-30 10:12:15,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:12:15,366 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;@42838076, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:12:15,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 10:12:15,369 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 10:12:15,370 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:12:15,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:15,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:12:15,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:12:15,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:15,375 INFO L85 PathProgramCache]: Analyzing trace with hash 18899464, now seen corresponding path program 1 times [2023-08-30 10:12:15,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:15,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893028657] [2023-08-30 10:12:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:15,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:15,609 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 10:12:15,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:15,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893028657] [2023-08-30 10:12:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893028657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:15,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:15,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:12:15,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769827474] [2023-08-30 10:12:15,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:15,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:12:15,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:15,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:12:15,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:12:15,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 283 [2023-08-30 10:12:15,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 73 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:15,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:15,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 283 [2023-08-30 10:12:15,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:15,813 INFO L130 PetriNetUnfolder]: 362/845 cut-off events. [2023-08-30 10:12:15,813 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:12:15,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 845 events. 362/845 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4750 event pairs, 0 based on Foata normal form. 135/763 useless extension candidates. Maximal degree in co-relation 1561. Up to 726 conditions per place. [2023-08-30 10:12:15,838 INFO L137 encePairwiseOnDemand]: 259/283 looper letters, 61 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 10:12:15,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 276 flow [2023-08-30 10:12:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:12:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:12:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-30 10:12:15,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771495877502945 [2023-08-30 10:12:15,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-30 10:12:15,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-30 10:12:15,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:15,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-30 10:12:15,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:15,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:15,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:15,866 INFO L175 Difference]: Start difference. First operand has 57 places, 73 transitions, 154 flow. Second operand 3 states and 490 transitions. [2023-08-30 10:12:15,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 276 flow [2023-08-30 10:12:15,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:12:15,873 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 118 flow [2023-08-30 10:12:15,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2023-08-30 10:12:15,877 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2023-08-30 10:12:15,877 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 118 flow [2023-08-30 10:12:15,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:15,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:15,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:12:15,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:12:15,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:12:15,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:15,879 INFO L85 PathProgramCache]: Analyzing trace with hash -659492998, now seen corresponding path program 1 times [2023-08-30 10:12:15,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:15,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670705805] [2023-08-30 10:12:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:15,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:15,940 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 10:12:15,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:15,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670705805] [2023-08-30 10:12:15,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670705805] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:12:15,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610401342] [2023-08-30 10:12:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:15,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:12:15,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:12:15,945 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 10:12:15,948 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 10:12:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:16,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:12:16,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:12:16,092 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 10:12:16,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:12:16,123 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 10:12:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610401342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:12:16,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:12:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:12:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301677777] [2023-08-30 10:12:16,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:12:16,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:12:16,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:12:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:12:16,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 283 [2023-08-30 10:12:16,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 133.28571428571428) internal successors, (933), 7 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:16,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:16,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 283 [2023-08-30 10:12:16,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:16,228 INFO L130 PetriNetUnfolder]: 39/120 cut-off events. [2023-08-30 10:12:16,228 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 10:12:16,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 120 events. 39/120 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 442 event pairs, 0 based on Foata normal form. 19/123 useless extension candidates. Maximal degree in co-relation 231. Up to 76 conditions per place. [2023-08-30 10:12:16,229 INFO L137 encePairwiseOnDemand]: 280/283 looper letters, 23 selfloop transitions, 2 changer transitions 18/47 dead transitions. [2023-08-30 10:12:16,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 191 flow [2023-08-30 10:12:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:12:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:12:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 568 transitions. [2023-08-30 10:12:16,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017667844522968 [2023-08-30 10:12:16,233 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 568 transitions. [2023-08-30 10:12:16,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 568 transitions. [2023-08-30 10:12:16,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:16,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 568 transitions. [2023-08-30 10:12:16,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:16,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:16,244 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:16,244 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 118 flow. Second operand 4 states and 568 transitions. [2023-08-30 10:12:16,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 191 flow [2023-08-30 10:12:16,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 185 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:12:16,246 INFO L231 Difference]: Finished difference. Result has 32 places, 18 transitions, 45 flow [2023-08-30 10:12:16,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=45, PETRI_PLACES=32, PETRI_TRANSITIONS=18} [2023-08-30 10:12:16,247 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -25 predicate places. [2023-08-30 10:12:16,247 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 18 transitions, 45 flow [2023-08-30 10:12:16,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 133.28571428571428) internal successors, (933), 7 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:16,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:16,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:12:16,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:12:16,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:12:16,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:12:16,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1968748734, now seen corresponding path program 1 times [2023-08-30 10:12:16,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:16,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875707327] [2023-08-30 10:12:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:16,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:16,506 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 10:12:16,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875707327] [2023-08-30 10:12:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875707327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:16,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:16,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:12:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16364622] [2023-08-30 10:12:16,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:16,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:12:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:12:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:12:16,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 283 [2023-08-30 10:12:16,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:16,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:16,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 283 [2023-08-30 10:12:16,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:16,533 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 10:12:16,535 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:12:16,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 3/14 useless extension candidates. Maximal degree in co-relation 16. Up to 10 conditions per place. [2023-08-30 10:12:16,535 INFO L137 encePairwiseOnDemand]: 281/283 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-30 10:12:16,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 6 transitions, 31 flow [2023-08-30 10:12:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:12:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:12:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-08-30 10:12:16,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628975265017668 [2023-08-30 10:12:16,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-08-30 10:12:16,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-08-30 10:12:16,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:16,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-08-30 10:12:16,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:16,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:16,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:16,545 INFO L175 Difference]: Start difference. First operand has 32 places, 18 transitions, 45 flow. Second operand 3 states and 393 transitions. [2023-08-30 10:12:16,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 6 transitions, 31 flow [2023-08-30 10:12:16,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 6 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:12:16,547 INFO L231 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2023-08-30 10:12:16,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2023-08-30 10:12:16,548 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -45 predicate places. [2023-08-30 10:12:16,549 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2023-08-30 10:12:16,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:16,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 10:12:16,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 10:12:16,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 10:12:16,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 10:12:16,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 10:12:16,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 10:12:16,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 10:12:16,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 10:12:16,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 10:12:16,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 10:12:16,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 10:12:16,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 10:12:16,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 10:12:16,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 10:12:16,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 10:12:16,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 10:12:16,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:12:16,559 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 10:12:16,562 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:12:16,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 160 transitions, 328 flow [2023-08-30 10:12:16,615 INFO L130 PetriNetUnfolder]: 33/222 cut-off events. [2023-08-30 10:12:16,616 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:12:16,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 222 events. 33/222 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 755 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place. [2023-08-30 10:12:16,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 160 transitions, 328 flow [2023-08-30 10:12:16,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 151 transitions, 307 flow [2023-08-30 10:12:16,620 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:12:16,627 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 151 transitions, 307 flow [2023-08-30 10:12:16,627 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 151 transitions, 307 flow [2023-08-30 10:12:16,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 151 transitions, 307 flow [2023-08-30 10:12:16,644 INFO L130 PetriNetUnfolder]: 32/213 cut-off events. [2023-08-30 10:12:16,645 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:12:16,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 213 events. 32/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 738 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place. [2023-08-30 10:12:16,648 INFO L119 LiptonReduction]: Number of co-enabled transitions 7488 [2023-08-30 10:12:18,741 INFO L134 LiptonReduction]: Checked pairs total: 17146 [2023-08-30 10:12:18,741 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-30 10:12:18,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:12:18,744 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;@42838076, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:12:18,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:12:18,747 INFO L130 PetriNetUnfolder]: 8/46 cut-off events. [2023-08-30 10:12:18,748 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:12:18,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:18,748 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:12:18,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:12:18,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash 213708767, now seen corresponding path program 1 times [2023-08-30 10:12:18,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:18,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824068394] [2023-08-30 10:12:18,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:18,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:12:18,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:12:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:12:18,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:12:18,791 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:12:18,791 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:12:18,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:12:18,791 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:12:18,792 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:12:18,793 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:12:18,793 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:12:18,814 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:12:18,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:18,846 INFO L130 PetriNetUnfolder]: 57/374 cut-off events. [2023-08-30 10:12:18,847 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:12:18,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 374 events. 57/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1475 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 224. Up to 9 conditions per place. [2023-08-30 10:12:18,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:18,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:18,853 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:12:18,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:18,853 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:18,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:18,884 INFO L130 PetriNetUnfolder]: 57/374 cut-off events. [2023-08-30 10:12:18,884 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:12:18,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 374 events. 57/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1475 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 224. Up to 9 conditions per place. [2023-08-30 10:12:18,897 INFO L119 LiptonReduction]: Number of co-enabled transitions 22360 [2023-08-30 10:12:21,457 INFO L134 LiptonReduction]: Checked pairs total: 62910 [2023-08-30 10:12:21,457 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-30 10:12:21,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:12:21,470 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;@42838076, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:12:21,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:12:21,474 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2023-08-30 10:12:21,475 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:12:21,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:21,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:12:21,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:12:21,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1110493557, now seen corresponding path program 1 times [2023-08-30 10:12:21,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:21,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374981924] [2023-08-30 10:12:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:21,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:21,538 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 10:12:21,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:21,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374981924] [2023-08-30 10:12:21,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374981924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:21,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:21,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:12:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276529056] [2023-08-30 10:12:21,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:21,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:12:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:21,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:12:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:12:21,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 377 [2023-08-30 10:12:21,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 108 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:21,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:21,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 377 [2023-08-30 10:12:21,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:23,273 INFO L130 PetriNetUnfolder]: 13316/21369 cut-off events. [2023-08-30 10:12:23,273 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-30 10:12:23,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41821 conditions, 21369 events. 13316/21369 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 162751 event pairs, 12015 based on Foata normal form. 3498/17901 useless extension candidates. Maximal degree in co-relation 26608. Up to 20336 conditions per place. [2023-08-30 10:12:23,474 INFO L137 encePairwiseOnDemand]: 346/377 looper letters, 79 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-30 10:12:23,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 99 transitions, 378 flow [2023-08-30 10:12:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:12:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:12:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-30 10:12:23,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5667550839964633 [2023-08-30 10:12:23,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-30 10:12:23,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-30 10:12:23,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:23,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-30 10:12:23,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:23,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:23,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:23,497 INFO L175 Difference]: Start difference. First operand has 83 places, 108 transitions, 234 flow. Second operand 3 states and 641 transitions. [2023-08-30 10:12:23,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 99 transitions, 378 flow [2023-08-30 10:12:23,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 99 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:12:23,501 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 198 flow [2023-08-30 10:12:23,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-08-30 10:12:23,504 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2023-08-30 10:12:23,505 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 198 flow [2023-08-30 10:12:23,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:23,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:23,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:12:23,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:12:23,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:12:23,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:23,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1524176506, now seen corresponding path program 1 times [2023-08-30 10:12:23,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:23,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634717390] [2023-08-30 10:12:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:23,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:23,573 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 10:12:23,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:23,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634717390] [2023-08-30 10:12:23,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634717390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:23,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:23,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:12:23,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113998079] [2023-08-30 10:12:23,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:23,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:12:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:12:23,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:12:23,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 377 [2023-08-30 10:12:23,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:23,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:23,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 377 [2023-08-30 10:12:23,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:24,824 INFO L130 PetriNetUnfolder]: 12151/20579 cut-off events. [2023-08-30 10:12:24,824 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2023-08-30 10:12:24,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40473 conditions, 20579 events. 12151/20579 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 164394 event pairs, 7152 based on Foata normal form. 0/15637 useless extension candidates. Maximal degree in co-relation 40427. Up to 14195 conditions per place. [2023-08-30 10:12:24,924 INFO L137 encePairwiseOnDemand]: 351/377 looper letters, 98 selfloop transitions, 10 changer transitions 1/122 dead transitions. [2023-08-30 10:12:24,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 122 transitions, 498 flow [2023-08-30 10:12:24,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:12:24,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:12:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-30 10:12:24,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2023-08-30 10:12:24,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-30 10:12:24,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-30 10:12:24,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:24,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-30 10:12:24,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:24,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:24,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:24,933 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 198 flow. Second operand 3 states and 624 transitions. [2023-08-30 10:12:24,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 122 transitions, 498 flow [2023-08-30 10:12:24,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 122 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:12:24,938 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 286 flow [2023-08-30 10:12:24,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-30 10:12:24,939 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2023-08-30 10:12:24,939 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 286 flow [2023-08-30 10:12:24,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:24,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:24,940 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:12:24,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:12:24,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:12:24,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:24,940 INFO L85 PathProgramCache]: Analyzing trace with hash -972970926, now seen corresponding path program 1 times [2023-08-30 10:12:24,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:24,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993913831] [2023-08-30 10:12:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:24,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:24,972 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 10:12:24,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:24,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993913831] [2023-08-30 10:12:24,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993913831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:24,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:24,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:12:24,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007948314] [2023-08-30 10:12:24,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:24,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:12:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:12:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:12:24,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 377 [2023-08-30 10:12:24,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:24,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:24,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 377 [2023-08-30 10:12:24,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:26,153 INFO L130 PetriNetUnfolder]: 11159/19131 cut-off events. [2023-08-30 10:12:26,153 INFO L131 PetriNetUnfolder]: For 4296/5031 co-relation queries the response was YES. [2023-08-30 10:12:26,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44637 conditions, 19131 events. 11159/19131 cut-off events. For 4296/5031 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 154446 event pairs, 9798 based on Foata normal form. 204/16650 useless extension candidates. Maximal degree in co-relation 35959. Up to 17663 conditions per place. [2023-08-30 10:12:26,240 INFO L137 encePairwiseOnDemand]: 375/377 looper letters, 66 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-08-30 10:12:26,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 416 flow [2023-08-30 10:12:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:12:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:12:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2023-08-30 10:12:26,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163572060123784 [2023-08-30 10:12:26,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2023-08-30 10:12:26,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2023-08-30 10:12:26,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:26,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2023-08-30 10:12:26,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:26,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:26,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:26,247 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 286 flow. Second operand 3 states and 584 transitions. [2023-08-30 10:12:26,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 416 flow [2023-08-30 10:12:26,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 394 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:12:26,360 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 262 flow [2023-08-30 10:12:26,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2023-08-30 10:12:26,361 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2023-08-30 10:12:26,361 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 262 flow [2023-08-30 10:12:26,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:26,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:26,361 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:12:26,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:12:26,362 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:12:26,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:26,362 INFO L85 PathProgramCache]: Analyzing trace with hash -972970891, now seen corresponding path program 1 times [2023-08-30 10:12:26,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:26,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712035839] [2023-08-30 10:12:26,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:26,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:26,388 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 10:12:26,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712035839] [2023-08-30 10:12:26,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712035839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:26,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:26,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:12:26,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908956326] [2023-08-30 10:12:26,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:26,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:12:26,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:26,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:12:26,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:12:26,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 377 [2023-08-30 10:12:26,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:26,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:26,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 377 [2023-08-30 10:12:26,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:27,484 INFO L130 PetriNetUnfolder]: 11116/19184 cut-off events. [2023-08-30 10:12:27,484 INFO L131 PetriNetUnfolder]: For 2425/2896 co-relation queries the response was YES. [2023-08-30 10:12:27,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43630 conditions, 19184 events. 11116/19184 cut-off events. For 2425/2896 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 155886 event pairs, 7734 based on Foata normal form. 95/16013 useless extension candidates. Maximal degree in co-relation 43618. Up to 17488 conditions per place. [2023-08-30 10:12:27,564 INFO L137 encePairwiseOnDemand]: 373/377 looper letters, 72 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-30 10:12:27,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 96 transitions, 434 flow [2023-08-30 10:12:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:12:27,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:12:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-08-30 10:12:27,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216622458001768 [2023-08-30 10:12:27,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-08-30 10:12:27,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-08-30 10:12:27,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:27,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-08-30 10:12:27,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:27,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:27,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:27,572 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 262 flow. Second operand 3 states and 590 transitions. [2023-08-30 10:12:27,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 96 transitions, 434 flow [2023-08-30 10:12:27,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 96 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:12:27,575 INFO L231 Difference]: Finished difference. Result has 85 places, 87 transitions, 273 flow [2023-08-30 10:12:27,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=85, PETRI_TRANSITIONS=87} [2023-08-30 10:12:27,576 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-08-30 10:12:27,576 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 87 transitions, 273 flow [2023-08-30 10:12:27,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:27,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:27,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:12:27,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:12:27,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:12:27,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1237222568, now seen corresponding path program 1 times [2023-08-30 10:12:27,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:27,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951286918] [2023-08-30 10:12:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:27,621 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 10:12:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951286918] [2023-08-30 10:12:27,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951286918] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:12:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919500440] [2023-08-30 10:12:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:27,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:12:27,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:12:27,624 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 10:12:27,627 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 10:12:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:27,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:12:27,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:12:27,706 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 10:12:27,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:12:27,727 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 10:12:27,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919500440] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:12:27,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:12:27,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:12:27,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213992428] [2023-08-30 10:12:27,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:12:27,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:12:27,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:27,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:12:27,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:12:27,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 377 [2023-08-30 10:12:27,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 273 flow. Second operand has 7 states, 7 states have (on average 175.71428571428572) internal successors, (1230), 7 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:27,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:27,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 377 [2023-08-30 10:12:27,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:27,804 INFO L130 PetriNetUnfolder]: 133/251 cut-off events. [2023-08-30 10:12:27,805 INFO L131 PetriNetUnfolder]: For 248/267 co-relation queries the response was YES. [2023-08-30 10:12:27,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 251 events. 133/251 cut-off events. For 248/267 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1033 event pairs, 6 based on Foata normal form. 37/283 useless extension candidates. Maximal degree in co-relation 690. Up to 171 conditions per place. [2023-08-30 10:12:27,806 INFO L137 encePairwiseOnDemand]: 374/377 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-08-30 10:12:27,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 169 flow [2023-08-30 10:12:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:12:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:12:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 896 transitions. [2023-08-30 10:12:27,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753315649867374 [2023-08-30 10:12:27,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 896 transitions. [2023-08-30 10:12:27,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 896 transitions. [2023-08-30 10:12:27,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:27,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 896 transitions. [2023-08-30 10:12:27,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:27,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 377.0) internal successors, (2262), 6 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:27,815 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 377.0) internal successors, (2262), 6 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:27,815 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 273 flow. Second operand 5 states and 896 transitions. [2023-08-30 10:12:27,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 169 flow [2023-08-30 10:12:27,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:12:27,817 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-08-30 10:12:27,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-08-30 10:12:27,818 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -51 predicate places. [2023-08-30 10:12:27,818 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-08-30 10:12:27,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 175.71428571428572) internal successors, (1230), 7 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:27,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 10:12:27,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 10:12:27,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 10:12:27,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 10:12:27,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 10:12:27,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 10:12:27,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 10:12:27,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 10:12:27,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 10:12:27,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 10:12:27,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 10:12:27,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 10:12:27,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 10:12:27,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 10:12:27,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 10:12:27,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 10:12:27,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 10:12:27,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 10:12:27,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 10:12:27,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 10:12:27,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:12:28,027 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,SelfDestructingSolverStorable8 [2023-08-30 10:12:28,028 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 10:12:28,029 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:12:28,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:28,063 INFO L130 PetriNetUnfolder]: 57/374 cut-off events. [2023-08-30 10:12:28,063 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:12:28,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 374 events. 57/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1475 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 224. Up to 9 conditions per place. [2023-08-30 10:12:28,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:28,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:28,068 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:12:28,068 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:28,069 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:28,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 214 transitions, 446 flow [2023-08-30 10:12:28,100 INFO L130 PetriNetUnfolder]: 57/374 cut-off events. [2023-08-30 10:12:28,101 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:12:28,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 374 events. 57/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1475 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 224. Up to 9 conditions per place. [2023-08-30 10:12:28,114 INFO L119 LiptonReduction]: Number of co-enabled transitions 22360 [2023-08-30 10:12:30,705 INFO L134 LiptonReduction]: Checked pairs total: 62710 [2023-08-30 10:12:30,706 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-30 10:12:30,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:12:30,707 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;@42838076, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:12:30,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:12:30,713 INFO L130 PetriNetUnfolder]: 25/110 cut-off events. [2023-08-30 10:12:30,713 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:12:30,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:30,714 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 10:12:30,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:12:30,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash -679950379, now seen corresponding path program 1 times [2023-08-30 10:12:30,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:30,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519863690] [2023-08-30 10:12:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:30,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:12:30,725 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:12:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:12:30,735 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:12:30,735 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:12:30,735 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:12:30,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:12:30,736 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:12:30,736 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:12:30,736 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:12:30,736 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 10:12:30,756 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:12:30,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 268 transitions, 566 flow [2023-08-30 10:12:30,802 INFO L130 PetriNetUnfolder]: 86/565 cut-off events. [2023-08-30 10:12:30,802 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:12:30,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 86/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2349 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 382. Up to 16 conditions per place. [2023-08-30 10:12:30,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 268 transitions, 566 flow [2023-08-30 10:12:30,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 268 transitions, 566 flow [2023-08-30 10:12:30,810 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:12:30,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 268 transitions, 566 flow [2023-08-30 10:12:30,810 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 268 transitions, 566 flow [2023-08-30 10:12:30,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 268 transitions, 566 flow [2023-08-30 10:12:30,859 INFO L130 PetriNetUnfolder]: 86/565 cut-off events. [2023-08-30 10:12:30,860 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:12:30,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 86/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2349 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 382. Up to 16 conditions per place. [2023-08-30 10:12:30,880 INFO L119 LiptonReduction]: Number of co-enabled transitions 42120 [2023-08-30 10:12:33,494 INFO L134 LiptonReduction]: Checked pairs total: 142349 [2023-08-30 10:12:33,494 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-08-30 10:12:33,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:12:33,496 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;@42838076, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:12:33,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-30 10:12:33,497 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-30 10:12:33,497 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:12:33,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:33,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:12:33,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:12:33,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:33,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1761411646, now seen corresponding path program 1 times [2023-08-30 10:12:33,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:33,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107025732] [2023-08-30 10:12:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:33,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:33,530 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 10:12:33,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:33,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107025732] [2023-08-30 10:12:33,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107025732] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:33,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:33,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:12:33,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896295464] [2023-08-30 10:12:33,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:33,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:12:33,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:33,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:12:33,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:12:33,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 465 [2023-08-30 10:12:33,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 142 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:33,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:33,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 465 [2023-08-30 10:12:33,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:13:09,164 INFO L130 PetriNetUnfolder]: 506608/691218 cut-off events. [2023-08-30 10:13:09,165 INFO L131 PetriNetUnfolder]: For 3618/3618 co-relation queries the response was YES. [2023-08-30 10:13:09,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376630 conditions, 691218 events. 506608/691218 cut-off events. For 3618/3618 co-relation queries the response was YES. Maximal size of possible extension queue 13943. Compared 5398752 event pairs, 315429 based on Foata normal form. 65635/561206 useless extension candidates. Maximal degree in co-relation 68430. Up to 682511 conditions per place. [2023-08-30 10:13:12,200 INFO L137 encePairwiseOnDemand]: 425/465 looper letters, 107 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-08-30 10:13:12,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 124 transitions, 496 flow [2023-08-30 10:13:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:13:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:13:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 803 transitions. [2023-08-30 10:13:12,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5756272401433692 [2023-08-30 10:13:12,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 803 transitions. [2023-08-30 10:13:12,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 803 transitions. [2023-08-30 10:13:12,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:13:12,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 803 transitions. [2023-08-30 10:13:12,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:12,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:12,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:12,207 INFO L175 Difference]: Start difference. First operand has 108 places, 142 transitions, 314 flow. Second operand 3 states and 803 transitions. [2023-08-30 10:13:12,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 124 transitions, 496 flow [2023-08-30 10:13:12,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 124 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:13:12,212 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 256 flow [2023-08-30 10:13:12,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2023-08-30 10:13:12,213 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 1 predicate places. [2023-08-30 10:13:12,213 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 256 flow [2023-08-30 10:13:12,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:12,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:13:12,214 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:13:12,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:13:12,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:13:12,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:13:12,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2008427536, now seen corresponding path program 1 times [2023-08-30 10:13:12,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:13:12,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096852827] [2023-08-30 10:13:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:13:12,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:13:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:13:12,268 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 10:13:12,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:13:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096852827] [2023-08-30 10:13:12,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096852827] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:13:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833234413] [2023-08-30 10:13:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:13:12,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:13:12,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:13:12,270 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 10:13:12,271 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 10:13:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:13:12,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:13:12,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:13:12,351 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 10:13:12,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:13:12,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833234413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:13:12,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:13:12,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 10:13:12,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342145668] [2023-08-30 10:13:12,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:13:12,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:13:12,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:13:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:13:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:13:12,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 465 [2023-08-30 10:13:12,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:12,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:13:12,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 465 [2023-08-30 10:13:12,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:13:50,380 INFO L130 PetriNetUnfolder]: 486548/662342 cut-off events. [2023-08-30 10:13:50,396 INFO L131 PetriNetUnfolder]: For 17067/17067 co-relation queries the response was YES. [2023-08-30 10:13:51,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341168 conditions, 662342 events. 486548/662342 cut-off events. For 17067/17067 co-relation queries the response was YES. Maximal size of possible extension queue 13259. Compared 5103675 event pairs, 410627 based on Foata normal form. 0/486223 useless extension candidates. Maximal degree in co-relation 954700. Up to 655650 conditions per place. [2023-08-30 10:13:54,084 INFO L137 encePairwiseOnDemand]: 462/465 looper letters, 106 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-30 10:13:54,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 123 transitions, 504 flow [2023-08-30 10:13:54,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:13:54,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:13:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 973 transitions. [2023-08-30 10:13:54,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231182795698924 [2023-08-30 10:13:54,087 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 973 transitions. [2023-08-30 10:13:54,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 973 transitions. [2023-08-30 10:13:54,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:13:54,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 973 transitions. [2023-08-30 10:13:54,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:54,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:54,093 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:54,093 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 256 flow. Second operand 4 states and 973 transitions. [2023-08-30 10:13:54,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 123 transitions, 504 flow [2023-08-30 10:13:54,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:13:54,105 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 254 flow [2023-08-30 10:13:54,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=110, PETRI_TRANSITIONS=105} [2023-08-30 10:13:54,106 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 2 predicate places. [2023-08-30 10:13:54,106 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 254 flow [2023-08-30 10:13:54,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:54,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:13:54,107 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:13:54,113 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 10:13:54,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:13:54,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:13:54,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:13:54,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2008427598, now seen corresponding path program 1 times [2023-08-30 10:13:54,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:13:54,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45761160] [2023-08-30 10:13:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:13:54,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:13:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:13:54,333 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 10:13:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:13:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45761160] [2023-08-30 10:13:54,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45761160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:13:54,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:13:54,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:13:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512329203] [2023-08-30 10:13:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:13:54,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:13:54,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:13:54,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:13:54,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:13:54,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 465 [2023-08-30 10:13:54,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:54,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:13:54,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 465 [2023-08-30 10:13:54,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:14:25,165 INFO L130 PetriNetUnfolder]: 466488/644463 cut-off events. [2023-08-30 10:14:25,165 INFO L131 PetriNetUnfolder]: For 10284/10284 co-relation queries the response was YES. [2023-08-30 10:14:25,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289702 conditions, 644463 events. 466488/644463 cut-off events. For 10284/10284 co-relation queries the response was YES. Maximal size of possible extension queue 13102. Compared 5296076 event pairs, 31552 based on Foata normal form. 0/482486 useless extension candidates. Maximal degree in co-relation 1288171. Up to 581480 conditions per place. [2023-08-30 10:14:28,086 INFO L137 encePairwiseOnDemand]: 461/465 looper letters, 142 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2023-08-30 10:14:28,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 161 transitions, 656 flow [2023-08-30 10:14:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:14:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:14:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-08-30 10:14:28,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670250896057347 [2023-08-30 10:14:28,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-08-30 10:14:28,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-08-30 10:14:28,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:14:28,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-08-30 10:14:28,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:28,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:28,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:28,093 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 254 flow. Second operand 3 states and 791 transitions. [2023-08-30 10:14:28,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 161 transitions, 656 flow [2023-08-30 10:14:28,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 161 transitions, 653 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:14:28,109 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 263 flow [2023-08-30 10:14:28,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=110, PETRI_TRANSITIONS=105} [2023-08-30 10:14:28,109 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 2 predicate places. [2023-08-30 10:14:28,110 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 263 flow [2023-08-30 10:14:28,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:28,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:14:28,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:14:28,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:14:28,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:14:28,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:14:28,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2007712005, now seen corresponding path program 1 times [2023-08-30 10:14:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:14:28,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881038001] [2023-08-30 10:14:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:14:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:14:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:14:28,144 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 10:14:28,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:14:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881038001] [2023-08-30 10:14:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881038001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:14:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106345861] [2023-08-30 10:14:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:14:28,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:14:28,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:14:28,146 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 10:14:28,148 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 10:14:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:14:28,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:14:28,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:14:28,227 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 10:14:28,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:14:28,244 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 10:14:28,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106345861] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:14:28,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:14:28,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:14:28,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112692963] [2023-08-30 10:14:28,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:14:28,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:14:28,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:14:28,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:14:28,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:14:28,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 465 [2023-08-30 10:14:28,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 263 flow. Second operand has 7 states, 7 states have (on average 217.28571428571428) internal successors, (1521), 7 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:28,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:14:28,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 465 [2023-08-30 10:14:28,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:14:32,484 INFO L130 PetriNetUnfolder]: 53772/82082 cut-off events. [2023-08-30 10:14:32,485 INFO L131 PetriNetUnfolder]: For 61361/61361 co-relation queries the response was YES. [2023-08-30 10:14:32,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204396 conditions, 82082 events. 53772/82082 cut-off events. For 61361/61361 co-relation queries the response was YES. Maximal size of possible extension queue 2696. Compared 663987 event pairs, 231 based on Foata normal form. 6817/73882 useless extension candidates. Maximal degree in co-relation 146580. Up to 51680 conditions per place. [2023-08-30 10:14:32,798 INFO L137 encePairwiseOnDemand]: 462/465 looper letters, 173 selfloop transitions, 4 changer transitions 0/189 dead transitions. [2023-08-30 10:14:32,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 189 transitions, 785 flow [2023-08-30 10:14:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:14:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:14:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1470 transitions. [2023-08-30 10:14:32,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2023-08-30 10:14:32,802 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1470 transitions. [2023-08-30 10:14:32,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1470 transitions. [2023-08-30 10:14:32,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:14:32,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1470 transitions. [2023-08-30 10:14:32,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:32,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:32,810 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:32,810 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 263 flow. Second operand 6 states and 1470 transitions. [2023-08-30 10:14:32,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 189 transitions, 785 flow [2023-08-30 10:14:32,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 189 transitions, 772 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 10:14:32,851 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 198 flow [2023-08-30 10:14:32,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2023-08-30 10:14:32,852 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -20 predicate places. [2023-08-30 10:14:32,852 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 198 flow [2023-08-30 10:14:32,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.28571428571428) internal successors, (1521), 7 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:32,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:14:32,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:14:32,860 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 10:14:33,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:14:33,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:14:33,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:14:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1569916696, now seen corresponding path program 1 times [2023-08-30 10:14:33,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:14:33,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154122038] [2023-08-30 10:14:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:14:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:14:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:14:33,079 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 10:14:33,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:14:33,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154122038] [2023-08-30 10:14:33,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154122038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:14:33,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:14:33,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:14:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666988733] [2023-08-30 10:14:33,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:14:33,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:14:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:14:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:14:33,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:14:33,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 465 [2023-08-30 10:14:33,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:33,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:14:33,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 465 [2023-08-30 10:14:33,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:14:33,273 INFO L130 PetriNetUnfolder]: 2224/3463 cut-off events. [2023-08-30 10:14:33,274 INFO L131 PetriNetUnfolder]: For 2571/2571 co-relation queries the response was YES. [2023-08-30 10:14:33,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8356 conditions, 3463 events. 2224/3463 cut-off events. For 2571/2571 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17519 event pairs, 2224 based on Foata normal form. 0/3442 useless extension candidates. Maximal degree in co-relation 8281. Up to 3276 conditions per place. [2023-08-30 10:14:33,279 INFO L137 encePairwiseOnDemand]: 461/465 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-30 10:14:33,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 29 transitions, 154 flow [2023-08-30 10:14:33,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:14:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:14:33,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-30 10:14:33,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45949820788530465 [2023-08-30 10:14:33,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-30 10:14:33,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-30 10:14:33,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:14:33,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-30 10:14:33,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:33,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:33,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:33,285 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 198 flow. Second operand 3 states and 641 transitions. [2023-08-30 10:14:33,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 29 transitions, 154 flow [2023-08-30 10:14:33,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 145 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 10:14:33,288 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-30 10:14:33,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-30 10:14:33,288 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -66 predicate places. [2023-08-30 10:14:33,288 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-30 10:14:33,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:33,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-08-30 10:14:33,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-08-30 10:14:33,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-08-30 10:14:33,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-08-30 10:14:33,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-08-30 10:14:33,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-08-30 10:14:33,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-08-30 10:14:33,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-08-30 10:14:33,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-08-30 10:14:33,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-08-30 10:14:33,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-08-30 10:14:33,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-08-30 10:14:33,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-08-30 10:14:33,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-08-30 10:14:33,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-08-30 10:14:33,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-08-30 10:14:33,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-08-30 10:14:33,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-08-30 10:14:33,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-08-30 10:14:33,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-08-30 10:14:33,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-08-30 10:14:33,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-08-30 10:14:33,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-08-30 10:14:33,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-08-30 10:14:33,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:14:33,293 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 10:14:33,294 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:14:33,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 268 transitions, 566 flow [2023-08-30 10:14:33,331 INFO L130 PetriNetUnfolder]: 86/565 cut-off events. [2023-08-30 10:14:33,331 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:14:33,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 86/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2349 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 382. Up to 16 conditions per place. [2023-08-30 10:14:33,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 268 transitions, 566 flow [2023-08-30 10:14:33,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 268 transitions, 566 flow [2023-08-30 10:14:33,337 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:14:33,337 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 268 transitions, 566 flow [2023-08-30 10:14:33,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 268 transitions, 566 flow [2023-08-30 10:14:33,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 268 transitions, 566 flow [2023-08-30 10:14:33,377 INFO L130 PetriNetUnfolder]: 86/565 cut-off events. [2023-08-30 10:14:33,377 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:14:33,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 86/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2349 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 382. Up to 16 conditions per place. [2023-08-30 10:14:33,396 INFO L119 LiptonReduction]: Number of co-enabled transitions 42120 [2023-08-30 10:14:35,848 INFO L134 LiptonReduction]: Checked pairs total: 143113 [2023-08-30 10:14:35,848 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-08-30 10:14:35,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:14:35,850 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;@42838076, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:14:35,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:14:35,859 INFO L130 PetriNetUnfolder]: 46/188 cut-off events. [2023-08-30 10:14:35,860 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 10:14:35,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:14:35,860 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 10:14:35,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:14:35,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:14:35,861 INFO L85 PathProgramCache]: Analyzing trace with hash 860296561, now seen corresponding path program 1 times [2023-08-30 10:14:35,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:14:35,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086236138] [2023-08-30 10:14:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:14:35,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:14:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:14:35,876 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:14:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:14:35,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:14:35,889 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:14:35,890 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:14:35,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 10:14:35,890 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:14:35,890 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:14:35,891 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:14:35,891 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 10:14:35,912 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 10:14:35,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 322 transitions, 688 flow [2023-08-30 10:14:36,123 INFO L130 PetriNetUnfolder]: 127/836 cut-off events. [2023-08-30 10:14:36,123 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 10:14:36,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 836 events. 127/836 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3765 event pairs, 6 based on Foata normal form. 0/635 useless extension candidates. Maximal degree in co-relation 585. Up to 32 conditions per place. [2023-08-30 10:14:36,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 322 transitions, 688 flow [2023-08-30 10:14:36,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 322 transitions, 688 flow [2023-08-30 10:14:36,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:14:36,132 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 322 transitions, 688 flow [2023-08-30 10:14:36,133 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 322 transitions, 688 flow [2023-08-30 10:14:36,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 322 transitions, 688 flow [2023-08-30 10:14:36,200 INFO L130 PetriNetUnfolder]: 127/836 cut-off events. [2023-08-30 10:14:36,200 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 10:14:36,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 836 events. 127/836 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3765 event pairs, 6 based on Foata normal form. 0/635 useless extension candidates. Maximal degree in co-relation 585. Up to 32 conditions per place. [2023-08-30 10:14:36,239 INFO L119 LiptonReduction]: Number of co-enabled transitions 67600 [2023-08-30 10:14:39,237 INFO L134 LiptonReduction]: Checked pairs total: 213409 [2023-08-30 10:14:39,237 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-08-30 10:14:39,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:14:39,238 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;@42838076, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:14:39,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-30 10:14:39,240 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-30 10:14:39,240 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:14:39,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:14:39,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:14:39,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:14:39,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:14:39,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1761672648, now seen corresponding path program 1 times [2023-08-30 10:14:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:14:39,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446224894] [2023-08-30 10:14:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:14:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:14:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:14:39,269 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 10:14:39,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:14:39,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446224894] [2023-08-30 10:14:39,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446224894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:14:39,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:14:39,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:14:39,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862882080] [2023-08-30 10:14:39,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:14:39,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:14:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:14:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:14:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:14:39,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 558 [2023-08-30 10:14:39,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 178 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:39,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:14:39,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 558 [2023-08-30 10:14:39,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand