./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_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_04-munge_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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 09:52:04,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:52:04,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:52:04,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:52:04,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:52:04,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:52:04,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:52:04,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:52:04,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:52:04,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:52:04,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:52:04,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:52:04,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:52:04,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:52:04,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:52:04,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:52:04,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:52:04,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:52:04,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:52:04,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:52:04,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:52:04,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:52:04,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:52:04,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:52:04,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:52:04,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:52:04,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:52:04,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:52:04,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:52:04,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:52:04,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:52:04,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:52:04,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:52:04,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:52:04,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:52:04,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:52:04,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:52:04,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:52:04,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:52:04,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:52:04,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:52:04,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:52:04,530 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:52:04,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:52:04,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:52:04,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:52:04,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:52:04,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:52:04,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:52:04,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:52:04,533 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:52:04,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:52:04,534 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:52:04,534 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:52:04,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:52:04,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:52:04,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:52:04,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:52:04,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:52:04,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:52:04,535 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:52:04,536 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:52:04,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:52:04,536 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:52:04,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:52:04,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:52:04,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:52:04,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:52:04,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:52:04,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:52:04,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:52:04,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:52:04,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:52:04,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:52:04,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:52:04,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:52:04,539 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:52:04,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:52:04,539 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:52:04,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:52:04,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:52:04,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:52:04,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:52:04,819 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:52:04,820 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:52:04,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-30 09:52:05,904 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:52:06,148 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:52:06,148 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-30 09:52:06,160 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65eaa51c8/3cc90634bfd7459e9f6d1cc13f28f22f/FLAGc844f0853 [2023-08-30 09:52:06,176 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65eaa51c8/3cc90634bfd7459e9f6d1cc13f28f22f [2023-08-30 09:52:06,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:52:06,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:52:06,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:52:06,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:52:06,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:52:06,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679d14da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06, skipping insertion in model container [2023-08-30 09:52:06,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:52:06,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:52:06,545 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_04-munge_racefree.i[30176,30189] [2023-08-30 09:52:06,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:52:06,588 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:52:06,626 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_04-munge_racefree.i[30176,30189] [2023-08-30 09:52:06,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:52:06,696 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:52:06,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06 WrapperNode [2023-08-30 09:52:06,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:52:06,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:52:06,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:52:06,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:52:06,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,776 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 218 [2023-08-30 09:52:06,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:52:06,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:52:06,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:52:06,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:52:06,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,827 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:52:06,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:52:06,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:52:06,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:52:06,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (1/1) ... [2023-08-30 09:52:06,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:52:06,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:52:06,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 09:52:06,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 09:52:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:52:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 09:52:06,912 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 09:52:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:52:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:52:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:52:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:52:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 09:52:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 09:52:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:52:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:52:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:52:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:52:06,915 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 09:52:07,103 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:52:07,105 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:52:07,418 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:52:07,439 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:52:07,439 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-30 09:52:07,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:52:07 BoogieIcfgContainer [2023-08-30 09:52:07,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:52:07,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:52:07,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:52:07,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:52:07,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:52:06" (1/3) ... [2023-08-30 09:52:07,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f120fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:52:07, skipping insertion in model container [2023-08-30 09:52:07,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:52:06" (2/3) ... [2023-08-30 09:52:07,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f120fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:52:07, skipping insertion in model container [2023-08-30 09:52:07,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:52:07" (3/3) ... [2023-08-30 09:52:07,447 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-08-30 09:52:07,460 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:52:07,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:52:07,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 09:52:07,468 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:52:07,598 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 09:52:07,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:07,820 INFO L130 PetriNetUnfolder]: 58/415 cut-off events. [2023-08-30 09:52:07,821 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 09:52:07,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 415 events. 58/415 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1790 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2023-08-30 09:52:07,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:07,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:07,848 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:52:07,861 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:07,864 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:07,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:07,923 INFO L130 PetriNetUnfolder]: 58/415 cut-off events. [2023-08-30 09:52:07,923 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 09:52:07,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 415 events. 58/415 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1790 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2023-08-30 09:52:07,954 INFO L119 LiptonReduction]: Number of co-enabled transitions 22204 [2023-08-30 09:52:11,701 INFO L134 LiptonReduction]: Checked pairs total: 46593 [2023-08-30 09:52:11,701 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-30 09:52:11,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:52:11,718 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6218cb41, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:52:11,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-30 09:52:11,726 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-08-30 09:52:11,727 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:52:11,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:52:11,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 09:52:11,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 09:52:11,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:52:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash 28179061, now seen corresponding path program 1 times [2023-08-30 09:52:11,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:52:11,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979953893] [2023-08-30 09:52:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:11,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:52:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:52:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:52:11,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:52:11,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979953893] [2023-08-30 09:52:11,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979953893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:52:11,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:52:11,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:52:11,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702418007] [2023-08-30 09:52:11,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:52:11,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:52:11,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:52:11,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:52:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:52:12,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 407 [2023-08-30 09:52:12,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 99 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:12,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:52:12,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 407 [2023-08-30 09:52:12,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:52:13,043 INFO L130 PetriNetUnfolder]: 7607/12672 cut-off events. [2023-08-30 09:52:13,044 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-30 09:52:13,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24588 conditions, 12672 events. 7607/12672 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 89741 event pairs, 3438 based on Foata normal form. 1874/10071 useless extension candidates. Maximal degree in co-relation 23552. Up to 11727 conditions per place. [2023-08-30 09:52:13,113 INFO L137 encePairwiseOnDemand]: 380/407 looper letters, 80 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2023-08-30 09:52:13,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 374 flow [2023-08-30 09:52:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:52:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:52:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2023-08-30 09:52:13,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683865683865684 [2023-08-30 09:52:13,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2023-08-30 09:52:13,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2023-08-30 09:52:13,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:52:13,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2023-08-30 09:52:13,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:13,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:13,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:13,165 INFO L175 Difference]: Start difference. First operand has 76 places, 99 transitions, 220 flow. Second operand 3 states and 694 transitions. [2023-08-30 09:52:13,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 374 flow [2023-08-30 09:52:13,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 94 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:52:13,173 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 178 flow [2023-08-30 09:52:13,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2023-08-30 09:52:13,178 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2023-08-30 09:52:13,179 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 178 flow [2023-08-30 09:52:13,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:13,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:52:13,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:52:13,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:52:13,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 09:52:13,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:52:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash 787341540, now seen corresponding path program 1 times [2023-08-30 09:52:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:52:13,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270624129] [2023-08-30 09:52:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:13,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:52:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:52:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:52:13,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:52:13,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270624129] [2023-08-30 09:52:13,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270624129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:52:13,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:52:13,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:52:13,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965399012] [2023-08-30 09:52:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:52:13,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:52:13,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:52:13,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:52:13,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:52:13,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 407 [2023-08-30 09:52:13,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:13,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:52:13,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 407 [2023-08-30 09:52:13,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:52:14,151 INFO L130 PetriNetUnfolder]: 7236/12323 cut-off events. [2023-08-30 09:52:14,151 INFO L131 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2023-08-30 09:52:14,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24046 conditions, 12323 events. 7236/12323 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 88009 event pairs, 2668 based on Foata normal form. 0/8460 useless extension candidates. Maximal degree in co-relation 22732. Up to 8532 conditions per place. [2023-08-30 09:52:14,203 INFO L137 encePairwiseOnDemand]: 399/407 looper letters, 101 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 09:52:14,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 490 flow [2023-08-30 09:52:14,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:52:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:52:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2023-08-30 09:52:14,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585585585585585 [2023-08-30 09:52:14,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2023-08-30 09:52:14,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2023-08-30 09:52:14,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:52:14,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2023-08-30 09:52:14,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:14,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:14,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:14,211 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 178 flow. Second operand 3 states and 682 transitions. [2023-08-30 09:52:14,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 490 flow [2023-08-30 09:52:14,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 116 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:52:14,217 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 201 flow [2023-08-30 09:52:14,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2023-08-30 09:52:14,218 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2023-08-30 09:52:14,218 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 201 flow [2023-08-30 09:52:14,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:14,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:52:14,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:52:14,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:52:14,219 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 09:52:14,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:52:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash 772208199, now seen corresponding path program 1 times [2023-08-30 09:52:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:52:14,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262103531] [2023-08-30 09:52:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:52:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:52:14,336 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 09:52:14,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:52:14,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262103531] [2023-08-30 09:52:14,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262103531] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:52:14,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786676321] [2023-08-30 09:52:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:14,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:52:14,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:52:14,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:52:14,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 09:52:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:52:14,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:52:14,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:52:14,509 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 09:52:14,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:52:14,537 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 09:52:14,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786676321] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:52:14,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:52:14,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 09:52:14,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197091848] [2023-08-30 09:52:14,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:52:14,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:52:14,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:52:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:52:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:52:14,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 407 [2023-08-30 09:52:14,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 201 flow. Second operand has 7 states, 7 states have (on average 193.42857142857142) internal successors, (1354), 7 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:14,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:52:14,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 407 [2023-08-30 09:52:14,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:52:14,617 INFO L130 PetriNetUnfolder]: 34/112 cut-off events. [2023-08-30 09:52:14,618 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 09:52:14,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 112 events. 34/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 409 event pairs, 0 based on Foata normal form. 18/121 useless extension candidates. Maximal degree in co-relation 247. Up to 70 conditions per place. [2023-08-30 09:52:14,619 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 19 selfloop transitions, 2 changer transitions 18/42 dead transitions. [2023-08-30 09:52:14,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 174 flow [2023-08-30 09:52:14,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:52:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:52:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 802 transitions. [2023-08-30 09:52:14,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4926289926289926 [2023-08-30 09:52:14,621 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 802 transitions. [2023-08-30 09:52:14,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 802 transitions. [2023-08-30 09:52:14,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:52:14,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 802 transitions. [2023-08-30 09:52:14,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.5) internal successors, (802), 4 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:14,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:14,628 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:14,628 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 201 flow. Second operand 4 states and 802 transitions. [2023-08-30 09:52:14,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 174 flow [2023-08-30 09:52:14,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 163 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 09:52:14,630 INFO L231 Difference]: Finished difference. Result has 31 places, 15 transitions, 39 flow [2023-08-30 09:52:14,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=39, PETRI_PLACES=31, PETRI_TRANSITIONS=15} [2023-08-30 09:52:14,631 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -45 predicate places. [2023-08-30 09:52:14,631 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 15 transitions, 39 flow [2023-08-30 09:52:14,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.42857142857142) internal successors, (1354), 7 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:14,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:52:14,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:52:14,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 09:52:14,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:52:14,838 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 09:52:14,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:52:14,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1392630350, now seen corresponding path program 1 times [2023-08-30 09:52:14,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:52:14,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325968546] [2023-08-30 09:52:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:14,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:52:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:52:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:52:14,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:52:14,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325968546] [2023-08-30 09:52:14,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325968546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:52:14,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:52:14,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:52:14,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356194384] [2023-08-30 09:52:14,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:52:14,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:52:14,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:52:14,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:52:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:52:14,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 407 [2023-08-30 09:52:14,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 15 transitions, 39 flow. Second operand has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:14,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:52:14,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 407 [2023-08-30 09:52:14,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:52:15,036 INFO L130 PetriNetUnfolder]: 14/47 cut-off events. [2023-08-30 09:52:15,037 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 09:52:15,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 47 events. 14/47 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 6 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 99. Up to 20 conditions per place. [2023-08-30 09:52:15,037 INFO L137 encePairwiseOnDemand]: 403/407 looper letters, 12 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-08-30 09:52:15,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 18 transitions, 79 flow [2023-08-30 09:52:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:52:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:52:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 946 transitions. [2023-08-30 09:52:15,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2023-08-30 09:52:15,041 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 946 transitions. [2023-08-30 09:52:15,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 946 transitions. [2023-08-30 09:52:15,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:52:15,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 946 transitions. [2023-08-30 09:52:15,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.2) internal successors, (946), 5 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:15,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:15,048 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:15,049 INFO L175 Difference]: Start difference. First operand has 31 places, 15 transitions, 39 flow. Second operand 5 states and 946 transitions. [2023-08-30 09:52:15,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 18 transitions, 79 flow [2023-08-30 09:52:15,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:52:15,050 INFO L231 Difference]: Finished difference. Result has 23 places, 14 transitions, 40 flow [2023-08-30 09:52:15,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=40, PETRI_PLACES=23, PETRI_TRANSITIONS=14} [2023-08-30 09:52:15,051 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -53 predicate places. [2023-08-30 09:52:15,051 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 40 flow [2023-08-30 09:52:15,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:15,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:52:15,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:52:15,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 09:52:15,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 09:52:15,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:52:15,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1392630351, now seen corresponding path program 1 times [2023-08-30 09:52:15,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:52:15,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031420506] [2023-08-30 09:52:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:15,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:52:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:52:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:52:15,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:52:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031420506] [2023-08-30 09:52:15,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031420506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:52:15,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:52:15,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:52:15,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120457410] [2023-08-30 09:52:15,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:52:15,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:52:15,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:52:15,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:52:15,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:52:15,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 407 [2023-08-30 09:52:15,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 14 transitions, 40 flow. Second operand has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:15,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:52:15,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 407 [2023-08-30 09:52:15,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:52:15,189 INFO L130 PetriNetUnfolder]: 12/43 cut-off events. [2023-08-30 09:52:15,189 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:52:15,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 43 events. 12/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 6 based on Foata normal form. 3/46 useless extension candidates. Maximal degree in co-relation 96. Up to 20 conditions per place. [2023-08-30 09:52:15,190 INFO L137 encePairwiseOnDemand]: 403/407 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-30 09:52:15,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 17 transitions, 76 flow [2023-08-30 09:52:15,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 09:52:15,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 09:52:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 945 transitions. [2023-08-30 09:52:15,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2023-08-30 09:52:15,209 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 945 transitions. [2023-08-30 09:52:15,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 945 transitions. [2023-08-30 09:52:15,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:52:15,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 945 transitions. [2023-08-30 09:52:15,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:15,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:15,217 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:15,217 INFO L175 Difference]: Start difference. First operand has 23 places, 14 transitions, 40 flow. Second operand 5 states and 945 transitions. [2023-08-30 09:52:15,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 17 transitions, 76 flow [2023-08-30 09:52:15,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 71 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:52:15,218 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2023-08-30 09:52:15,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2023-08-30 09:52:15,219 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -53 predicate places. [2023-08-30 09:52:15,219 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2023-08-30 09:52:15,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:15,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-08-30 09:52:15,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-08-30 09:52:15,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-08-30 09:52:15,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-08-30 09:52:15,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-08-30 09:52:15,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-08-30 09:52:15,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-08-30 09:52:15,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-08-30 09:52:15,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-08-30 09:52:15,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-08-30 09:52:15,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-08-30 09:52:15,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-08-30 09:52:15,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-08-30 09:52:15,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-08-30 09:52:15,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-08-30 09:52:15,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-08-30 09:52:15,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-08-30 09:52:15,232 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-08-30 09:52:15,232 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-08-30 09:52:15,232 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-08-30 09:52:15,232 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-08-30 09:52:15,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-08-30 09:52:15,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-08-30 09:52:15,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-08-30 09:52:15,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 09:52:15,234 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 09:52:15,235 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 09:52:15,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:15,310 INFO L130 PetriNetUnfolder]: 58/415 cut-off events. [2023-08-30 09:52:15,311 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 09:52:15,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 415 events. 58/415 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1790 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2023-08-30 09:52:15,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:15,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:15,315 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:52:15,316 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:15,316 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:15,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 230 transitions, 482 flow [2023-08-30 09:52:15,352 INFO L130 PetriNetUnfolder]: 58/415 cut-off events. [2023-08-30 09:52:15,352 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 09:52:15,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 415 events. 58/415 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1790 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2023-08-30 09:52:15,366 INFO L119 LiptonReduction]: Number of co-enabled transitions 22204 [2023-08-30 09:52:18,608 INFO L134 LiptonReduction]: Checked pairs total: 42648 [2023-08-30 09:52:18,609 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-08-30 09:52:18,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 09:52:18,612 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;@6218cb41, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:52:18,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 09:52:18,615 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2023-08-30 09:52:18,615 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:52:18,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:52:18,616 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 09:52:18,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 09:52:18,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:52:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2026468274, now seen corresponding path program 1 times [2023-08-30 09:52:18,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:52:18,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807828190] [2023-08-30 09:52:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:18,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:52:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:52:18,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 09:52:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:52:18,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 09:52:18,672 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 09:52:18,672 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-30 09:52:18,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-30 09:52:18,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 09:52:18,673 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 09:52:18,673 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-30 09:52:18,674 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 09:52:18,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 09:52:18,739 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-30 09:52:18,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 358 transitions, 764 flow [2023-08-30 09:52:18,904 INFO L130 PetriNetUnfolder]: 197/1254 cut-off events. [2023-08-30 09:52:18,905 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 09:52:18,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 1254 events. 197/1254 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7718 event pairs, 1 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 754. Up to 32 conditions per place. [2023-08-30 09:52:18,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 358 transitions, 764 flow [2023-08-30 09:52:18,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 358 transitions, 764 flow [2023-08-30 09:52:18,944 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:52:18,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 358 transitions, 764 flow [2023-08-30 09:52:18,946 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 358 transitions, 764 flow [2023-08-30 09:52:18,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 358 transitions, 764 flow [2023-08-30 09:52:19,132 INFO L130 PetriNetUnfolder]: 197/1254 cut-off events. [2023-08-30 09:52:19,133 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 09:52:19,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 1254 events. 197/1254 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7718 event pairs, 1 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 754. Up to 32 conditions per place. [2023-08-30 09:52:19,265 INFO L119 LiptonReduction]: Number of co-enabled transitions 76616 [2023-08-30 09:52:23,298 INFO L134 LiptonReduction]: Checked pairs total: 187723 [2023-08-30 09:52:23,298 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-08-30 09:52:23,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:52:23,300 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;@6218cb41, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:52:23,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-30 09:52:23,302 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 09:52:23,303 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:52:23,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:52:23,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:52:23,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-30 09:52:23,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:52:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1751204596, now seen corresponding path program 1 times [2023-08-30 09:52:23,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:52:23,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893031521] [2023-08-30 09:52:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:52:23,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:52:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:52:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:52:23,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:52:23,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893031521] [2023-08-30 09:52:23,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893031521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:52:23,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:52:23,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:52:23,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286291984] [2023-08-30 09:52:23,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:52:23,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:52:23,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:52:23,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:52:23,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:52:23,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 616 [2023-08-30 09:52:23,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 172 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:52:23,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:52:23,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 616 [2023-08-30 09:52:23,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand