./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:16:28,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:16:28,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:16:28,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:16:28,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:16:28,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:16:28,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:16:28,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:16:28,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:16:28,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:16:28,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:16:28,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:16:28,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:16:28,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:16:28,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:16:28,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:16:28,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:16:28,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:16:28,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:16:28,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:16:28,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:16:29,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:16:29,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:16:29,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:16:29,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:16:29,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:16:29,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:16:29,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:16:29,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:16:29,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:16:29,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:16:29,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:16:29,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:16:29,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:16:29,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:16:29,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:16:29,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:16:29,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:16:29,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:16:29,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:16:29,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:16:29,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:16:29,056 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:16:29,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:16:29,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:16:29,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:16:29,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:16:29,059 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:16:29,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:16:29,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:16:29,060 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:16:29,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:16:29,061 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:16:29,061 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:16:29,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:16:29,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:16:29,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:16:29,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:16:29,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:16:29,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:16:29,062 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:16:29,063 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:16:29,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:16:29,063 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:16:29,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:16:29,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:16:29,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:16:29,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:16:29,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:16:29,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:16:29,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:16:29,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:16:29,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:16:29,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:16:29,065 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:16:29,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:16:29,065 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:16:29,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:16:29,066 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:16:29,066 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:16:29,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:16:29,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:16:29,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:16:29,367 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:16:29,367 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:16:29,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-30 14:16:30,538 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:16:30,826 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:16:30,827 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-30 14:16:30,843 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3dc27a1b/27f75bcdf0fe4965bf1e061d695e7431/FLAGdab17f441 [2023-08-30 14:16:30,868 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3dc27a1b/27f75bcdf0fe4965bf1e061d695e7431 [2023-08-30 14:16:30,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:16:30,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:16:30,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:16:30,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:16:30,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:16:30,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:16:30" (1/1) ... [2023-08-30 14:16:30,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fca889e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:30, skipping insertion in model container [2023-08-30 14:16:30,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:16:30" (1/1) ... [2023-08-30 14:16:30,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:16:30,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:16:31,250 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2023-08-30 14:16:31,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:16:31,307 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:16:31,360 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2023-08-30 14:16:31,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:16:31,403 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:16:31,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31 WrapperNode [2023-08-30 14:16:31,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:16:31,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:16:31,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:16:31,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:16:31,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,447 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 153 [2023-08-30 14:16:31,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:16:31,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:16:31,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:16:31,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:16:31,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,470 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:16:31,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:16:31,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:16:31,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:16:31,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (1/1) ... [2023-08-30 14:16:31,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:16:31,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:16:31,507 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 14:16:31,514 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 14:16:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:16:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:16:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:16:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:16:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:16:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:16:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:16:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:16:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:16:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:16:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:16:31,539 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 14:16:31,638 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:16:31,640 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:16:31,888 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:16:31,895 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:16:31,895 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-30 14:16:31,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:16:31 BoogieIcfgContainer [2023-08-30 14:16:31,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:16:31,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:16:31,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:16:31,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:16:31,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:16:30" (1/3) ... [2023-08-30 14:16:31,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10eb2cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:16:31, skipping insertion in model container [2023-08-30 14:16:31,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:31" (2/3) ... [2023-08-30 14:16:31,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10eb2cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:16:31, skipping insertion in model container [2023-08-30 14:16:31,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:16:31" (3/3) ... [2023-08-30 14:16:31,905 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-08-30 14:16:31,912 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:16:31,920 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:16:31,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 14:16:31,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:16:31,980 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:16:32,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 160 transitions, 328 flow [2023-08-30 14:16:32,072 INFO L130 PetriNetUnfolder]: 33/222 cut-off events. [2023-08-30 14:16:32,073 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:16:32,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 222 events. 33/222 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 755 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place. [2023-08-30 14:16:32,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 160 transitions, 328 flow [2023-08-30 14:16:32,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 157 transitions, 322 flow [2023-08-30 14:16:32,089 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:16:32,097 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 157 transitions, 322 flow [2023-08-30 14:16:32,099 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 157 transitions, 322 flow [2023-08-30 14:16:32,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 157 transitions, 322 flow [2023-08-30 14:16:32,146 INFO L130 PetriNetUnfolder]: 32/219 cut-off events. [2023-08-30 14:16:32,146 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:16:32,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 219 events. 32/219 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 765 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place. [2023-08-30 14:16:32,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 7488 [2023-08-30 14:16:34,844 INFO L134 LiptonReduction]: Checked pairs total: 19622 [2023-08-30 14:16:34,844 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-30 14:16:34,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:16:34,862 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;@41ec9e15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:16:34,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:16:34,866 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 14:16:34,866 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:16:34,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:34,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:16:34,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:16:34,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash 18899464, now seen corresponding path program 1 times [2023-08-30 14:16:34,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:34,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315855281] [2023-08-30 14:16:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:34,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:35,113 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 14:16:35,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315855281] [2023-08-30 14:16:35,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315855281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:35,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:35,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:16:35,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095101109] [2023-08-30 14:16:35,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:35,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:35,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:35,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:35,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 283 [2023-08-30 14:16:35,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 73 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:35,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:35,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 283 [2023-08-30 14:16:35,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:35,338 INFO L130 PetriNetUnfolder]: 362/845 cut-off events. [2023-08-30 14:16:35,339 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:16:35,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 845 events. 362/845 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4750 event pairs, 0 based on Foata normal form. 135/763 useless extension candidates. Maximal degree in co-relation 1561. Up to 726 conditions per place. [2023-08-30 14:16:35,345 INFO L137 encePairwiseOnDemand]: 259/283 looper letters, 61 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 14:16:35,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 276 flow [2023-08-30 14:16:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:35,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-30 14:16:35,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771495877502945 [2023-08-30 14:16:35,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-30 14:16:35,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-30 14:16:35,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:35,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-30 14:16:35,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:35,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:35,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:35,374 INFO L175 Difference]: Start difference. First operand has 57 places, 73 transitions, 154 flow. Second operand 3 states and 490 transitions. [2023-08-30 14:16:35,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 276 flow [2023-08-30 14:16:35,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:16:35,380 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 118 flow [2023-08-30 14:16:35,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2023-08-30 14:16:35,384 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2023-08-30 14:16:35,385 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 118 flow [2023-08-30 14:16:35,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:35,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:35,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:16:35,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:16:35,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:16:35,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash 982552605, now seen corresponding path program 1 times [2023-08-30 14:16:35,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:35,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822025413] [2023-08-30 14:16:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:35,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:35,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:16:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:35,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:16:35,438 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:16:35,439 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:16:35,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:16:35,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:16:35,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:16:35,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:16:35,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:16:35,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:16:35,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:16:35,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:16:35,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:16:35,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:16:35,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:16:35,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:16:35,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:16:35,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:16:35,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:16:35,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:16:35,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:16:35,445 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:16:35,447 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:16:35,447 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:16:35,468 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:16:35,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 214 transitions, 446 flow [2023-08-30 14:16:35,520 INFO L130 PetriNetUnfolder]: 57/374 cut-off events. [2023-08-30 14:16:35,521 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:16:35,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 374 events. 57/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1475 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 224. Up to 9 conditions per place. [2023-08-30 14:16:35,525 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 214 transitions, 446 flow [2023-08-30 14:16:35,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 214 transitions, 446 flow [2023-08-30 14:16:35,529 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:16:35,529 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 214 transitions, 446 flow [2023-08-30 14:16:35,529 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 214 transitions, 446 flow [2023-08-30 14:16:35,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 214 transitions, 446 flow [2023-08-30 14:16:35,561 INFO L130 PetriNetUnfolder]: 57/374 cut-off events. [2023-08-30 14:16:35,562 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:16:35,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 374 events. 57/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1475 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 224. Up to 9 conditions per place. [2023-08-30 14:16:35,578 INFO L119 LiptonReduction]: Number of co-enabled transitions 22360 [2023-08-30 14:16:38,375 INFO L134 LiptonReduction]: Checked pairs total: 62750 [2023-08-30 14:16:38,376 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-30 14:16:38,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:16:38,386 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;@41ec9e15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:16:38,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:16:38,392 INFO L130 PetriNetUnfolder]: 3/22 cut-off events. [2023-08-30 14:16:38,392 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:16:38,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:38,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:16:38,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:38,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash 997188938, now seen corresponding path program 1 times [2023-08-30 14:16:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:38,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840293511] [2023-08-30 14:16:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:38,483 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 14:16:38,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:38,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840293511] [2023-08-30 14:16:38,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840293511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:38,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:38,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:16:38,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582007559] [2023-08-30 14:16:38,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:38,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:38,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:38,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:38,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:38,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 377 [2023-08-30 14:16:38,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 108 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:38,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:38,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 377 [2023-08-30 14:16:38,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:40,179 INFO L130 PetriNetUnfolder]: 13316/21369 cut-off events. [2023-08-30 14:16:40,179 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-30 14:16:40,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41821 conditions, 21369 events. 13316/21369 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 162845 event pairs, 12015 based on Foata normal form. 3498/17901 useless extension candidates. Maximal degree in co-relation 26608. Up to 20336 conditions per place. [2023-08-30 14:16:40,320 INFO L137 encePairwiseOnDemand]: 346/377 looper letters, 79 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-30 14:16:40,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 99 transitions, 378 flow [2023-08-30 14:16:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-30 14:16:40,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5667550839964633 [2023-08-30 14:16:40,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-30 14:16:40,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-30 14:16:40,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:40,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-30 14:16:40,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:40,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:40,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:40,371 INFO L175 Difference]: Start difference. First operand has 83 places, 108 transitions, 234 flow. Second operand 3 states and 641 transitions. [2023-08-30 14:16:40,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 99 transitions, 378 flow [2023-08-30 14:16:40,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 99 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:16:40,377 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 198 flow [2023-08-30 14:16:40,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-08-30 14:16:40,378 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2023-08-30 14:16:40,378 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 198 flow [2023-08-30 14:16:40,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:40,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:40,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:40,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:16:40,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:40,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:40,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1256410840, now seen corresponding path program 1 times [2023-08-30 14:16:40,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:40,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136523519] [2023-08-30 14:16:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:40,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:40,439 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 14:16:40,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:40,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136523519] [2023-08-30 14:16:40,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136523519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:40,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:40,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:16:40,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602775773] [2023-08-30 14:16:40,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:40,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:40,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:40,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:40,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:40,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 377 [2023-08-30 14:16:40,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:40,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:40,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 377 [2023-08-30 14:16:40,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:41,914 INFO L130 PetriNetUnfolder]: 12151/20579 cut-off events. [2023-08-30 14:16:41,915 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2023-08-30 14:16:41,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40473 conditions, 20579 events. 12151/20579 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 164323 event pairs, 7152 based on Foata normal form. 0/15637 useless extension candidates. Maximal degree in co-relation 40427. Up to 14195 conditions per place. [2023-08-30 14:16:42,038 INFO L137 encePairwiseOnDemand]: 351/377 looper letters, 98 selfloop transitions, 10 changer transitions 0/122 dead transitions. [2023-08-30 14:16:42,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 122 transitions, 498 flow [2023-08-30 14:16:42,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:42,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-30 14:16:42,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2023-08-30 14:16:42,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-30 14:16:42,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-30 14:16:42,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:42,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-30 14:16:42,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:42,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:42,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:42,051 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 198 flow. Second operand 3 states and 624 transitions. [2023-08-30 14:16:42,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 122 transitions, 498 flow [2023-08-30 14:16:42,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 122 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:16:42,057 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 292 flow [2023-08-30 14:16:42,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2023-08-30 14:16:42,060 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2023-08-30 14:16:42,060 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 292 flow [2023-08-30 14:16:42,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:42,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:42,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:16:42,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:16:42,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:42,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash 542183590, now seen corresponding path program 1 times [2023-08-30 14:16:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:42,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561718522] [2023-08-30 14:16:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:42,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:16:42,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:42,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561718522] [2023-08-30 14:16:42,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561718522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:16:42,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719108863] [2023-08-30 14:16:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:42,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:16:42,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:16:42,157 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 14:16:42,183 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 14:16:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:42,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:16:42,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:16:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:16:42,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:16:42,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719108863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:42,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:16:42,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:16:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674174043] [2023-08-30 14:16:42,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:42,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:16:42,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:42,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:16:42,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:16:42,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 377 [2023-08-30 14:16:42,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:42,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:42,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 377 [2023-08-30 14:16:42,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:43,667 INFO L130 PetriNetUnfolder]: 11130/19152 cut-off events. [2023-08-30 14:16:43,667 INFO L131 PetriNetUnfolder]: For 4237/4883 co-relation queries the response was YES. [2023-08-30 14:16:43,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44607 conditions, 19152 events. 11130/19152 cut-off events. For 4237/4883 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 155651 event pairs, 8913 based on Foata normal form. 204/16661 useless extension candidates. Maximal degree in co-relation 35925. Up to 17658 conditions per place. [2023-08-30 14:16:43,806 INFO L137 encePairwiseOnDemand]: 374/377 looper letters, 69 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-30 14:16:43,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 92 transitions, 440 flow [2023-08-30 14:16:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:16:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:16:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 763 transitions. [2023-08-30 14:16:43,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059681697612732 [2023-08-30 14:16:43,809 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 763 transitions. [2023-08-30 14:16:43,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 763 transitions. [2023-08-30 14:16:43,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:43,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 763 transitions. [2023-08-30 14:16:43,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:43,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:43,814 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:43,814 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 292 flow. Second operand 4 states and 763 transitions. [2023-08-30 14:16:43,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 92 transitions, 440 flow [2023-08-30 14:16:44,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 420 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:16:44,148 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 272 flow [2023-08-30 14:16:44,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-30 14:16:44,148 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2023-08-30 14:16:44,149 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 272 flow [2023-08-30 14:16:44,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:44,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:44,150 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:16:44,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:16:44,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:16:44,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:44,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:44,356 INFO L85 PathProgramCache]: Analyzing trace with hash 542183625, now seen corresponding path program 1 times [2023-08-30 14:16:44,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:44,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198662662] [2023-08-30 14:16:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:44,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:16:44,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:44,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198662662] [2023-08-30 14:16:44,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198662662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:44,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:44,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:16:44,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73374507] [2023-08-30 14:16:44,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:44,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:44,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:44,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:44,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:44,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 377 [2023-08-30 14:16:44,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:44,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:44,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 377 [2023-08-30 14:16:44,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:45,403 INFO L130 PetriNetUnfolder]: 11116/19210 cut-off events. [2023-08-30 14:16:45,403 INFO L131 PetriNetUnfolder]: For 2485/2952 co-relation queries the response was YES. [2023-08-30 14:16:45,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43674 conditions, 19210 events. 11116/19210 cut-off events. For 2485/2952 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 156095 event pairs, 7833 based on Foata normal form. 95/16040 useless extension candidates. Maximal degree in co-relation 40131. Up to 17488 conditions per place. [2023-08-30 14:16:45,518 INFO L137 encePairwiseOnDemand]: 373/377 looper letters, 72 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2023-08-30 14:16:45,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 97 transitions, 444 flow [2023-08-30 14:16:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-08-30 14:16:45,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216622458001768 [2023-08-30 14:16:45,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-08-30 14:16:45,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-08-30 14:16:45,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:45,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-08-30 14:16:45,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:45,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:45,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:45,526 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 272 flow. Second operand 3 states and 590 transitions. [2023-08-30 14:16:45,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 97 transitions, 444 flow [2023-08-30 14:16:45,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 97 transitions, 441 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:16:45,529 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 281 flow [2023-08-30 14:16:45,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-30 14:16:45,530 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2023-08-30 14:16:45,530 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 281 flow [2023-08-30 14:16:45,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:45,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:45,531 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:16:45,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:16:45,531 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:45,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1347470111, now seen corresponding path program 1 times [2023-08-30 14:16:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:45,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896839419] [2023-08-30 14:16:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:45,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:45,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:16:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:45,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:16:45,571 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:16:45,571 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:16:45,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:16:45,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:16:45,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:16:45,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:16:45,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:16:45,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:16:45,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:16:45,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:16:45,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:16:45,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:16:45,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:16:45,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:16:45,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:16:45,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:16:45,574 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:16:45,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:16:45,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:16:45,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:16:45,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:16:45,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:16:45,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:16:45,577 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 14:16:45,578 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:16:45,578 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:16:45,612 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:16:45,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 268 transitions, 566 flow [2023-08-30 14:16:45,680 INFO L130 PetriNetUnfolder]: 86/565 cut-off events. [2023-08-30 14:16:45,681 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:16:45,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 86/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2349 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 382. Up to 16 conditions per place. [2023-08-30 14:16:45,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 268 transitions, 566 flow [2023-08-30 14:16:45,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 268 transitions, 566 flow [2023-08-30 14:16:45,693 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:16:45,693 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 268 transitions, 566 flow [2023-08-30 14:16:45,693 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 268 transitions, 566 flow [2023-08-30 14:16:45,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 268 transitions, 566 flow [2023-08-30 14:16:45,751 INFO L130 PetriNetUnfolder]: 86/565 cut-off events. [2023-08-30 14:16:45,752 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:16:45,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 86/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2349 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 382. Up to 16 conditions per place. [2023-08-30 14:16:45,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 42120 [2023-08-30 14:16:48,909 INFO L134 LiptonReduction]: Checked pairs total: 127271 [2023-08-30 14:16:48,909 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-08-30 14:16:48,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:16:48,912 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;@41ec9e15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:16:48,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:16:48,914 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-30 14:16:48,914 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:16:48,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:48,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:16:48,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:16:48,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1493221157, now seen corresponding path program 1 times [2023-08-30 14:16:48,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787847100] [2023-08-30 14:16:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:48,936 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 14:16:48,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:48,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787847100] [2023-08-30 14:16:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787847100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:48,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:48,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:16:48,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543736233] [2023-08-30 14:16:48,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:48,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:48,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:48,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:48,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:48,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 466 [2023-08-30 14:16:48,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 142 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:48,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:48,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 466 [2023-08-30 14:16:48,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:26,010 INFO L130 PetriNetUnfolder]: 506608/691218 cut-off events. [2023-08-30 14:17:26,010 INFO L131 PetriNetUnfolder]: For 3618/3618 co-relation queries the response was YES. [2023-08-30 14:17:27,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376630 conditions, 691218 events. 506608/691218 cut-off events. For 3618/3618 co-relation queries the response was YES. Maximal size of possible extension queue 14006. Compared 5400476 event pairs, 315429 based on Foata normal form. 65635/561206 useless extension candidates. Maximal degree in co-relation 68430. Up to 682511 conditions per place. [2023-08-30 14:17:29,496 INFO L137 encePairwiseOnDemand]: 426/466 looper letters, 107 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-08-30 14:17:29,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 124 transitions, 496 flow [2023-08-30 14:17:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 803 transitions. [2023-08-30 14:17:29,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5743919885550787 [2023-08-30 14:17:29,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 803 transitions. [2023-08-30 14:17:29,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 803 transitions. [2023-08-30 14:17:29,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:29,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 803 transitions. [2023-08-30 14:17:29,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:29,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:29,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:29,506 INFO L175 Difference]: Start difference. First operand has 108 places, 142 transitions, 314 flow. Second operand 3 states and 803 transitions. [2023-08-30 14:17:29,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 124 transitions, 496 flow [2023-08-30 14:17:29,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 124 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:17:29,514 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 256 flow [2023-08-30 14:17:29,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2023-08-30 14:17:29,515 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 1 predicate places. [2023-08-30 14:17:29,515 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 256 flow [2023-08-30 14:17:29,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:29,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:29,516 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:17:29,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:17:29,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:17:29,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1540587079, now seen corresponding path program 1 times [2023-08-30 14:17:29,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:29,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602766781] [2023-08-30 14:17:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:29,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:17:29,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:29,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602766781] [2023-08-30 14:17:29,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602766781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:29,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:29,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:29,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904565586] [2023-08-30 14:17:29,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:29,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:29,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:29,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:29,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:29,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 466 [2023-08-30 14:17:29,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:29,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:29,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 466 [2023-08-30 14:17:29,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:04,037 INFO L130 PetriNetUnfolder]: 486548/671709 cut-off events. [2023-08-30 14:18:04,037 INFO L131 PetriNetUnfolder]: For 10250/10250 co-relation queries the response was YES. [2023-08-30 14:18:05,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350607 conditions, 671709 events. 486548/671709 cut-off events. For 10250/10250 co-relation queries the response was YES. Maximal size of possible extension queue 13686. Compared 5534411 event pairs, 50532 based on Foata normal form. 0/497770 useless extension candidates. Maximal degree in co-relation 1349077. Up to 581480 conditions per place. [2023-08-30 14:18:07,436 INFO L137 encePairwiseOnDemand]: 462/466 looper letters, 143 selfloop transitions, 4 changer transitions 0/162 dead transitions. [2023-08-30 14:18:07,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 162 transitions, 660 flow [2023-08-30 14:18:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:18:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:18:07,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2023-08-30 14:18:07,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665236051502146 [2023-08-30 14:18:07,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 792 transitions. [2023-08-30 14:18:07,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 792 transitions. [2023-08-30 14:18:07,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:07,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 792 transitions. [2023-08-30 14:18:07,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:07,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:07,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:07,447 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 256 flow. Second operand 3 states and 792 transitions. [2023-08-30 14:18:07,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 162 transitions, 660 flow [2023-08-30 14:18:07,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 162 transitions, 658 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:18:07,463 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 266 flow [2023-08-30 14:18:07,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2023-08-30 14:18:07,465 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 2 predicate places. [2023-08-30 14:18:07,465 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 266 flow [2023-08-30 14:18:07,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:07,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:07,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:18:07,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:18:07,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:18:07,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:07,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1540587136, now seen corresponding path program 1 times [2023-08-30 14:18:07,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:07,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923664570] [2023-08-30 14:18:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:07,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:18:07,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:07,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923664570] [2023-08-30 14:18:07,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923664570] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:18:07,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140314885] [2023-08-30 14:18:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:07,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:07,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:18:07,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:18:07,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:18:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:07,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:18:07,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:18:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:18:07,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:18:07,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140314885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:07,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:18:07,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:18:07,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884440816] [2023-08-30 14:18:07,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:07,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:18:07,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:07,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:18:07,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:18:07,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 466 [2023-08-30 14:18:07,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:07,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:07,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 466 [2023-08-30 14:18:07,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:41,142 INFO L130 PetriNetUnfolder]: 466488/635148 cut-off events. [2023-08-30 14:18:41,142 INFO L131 PetriNetUnfolder]: For 64714/64714 co-relation queries the response was YES. [2023-08-30 14:18:42,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300751 conditions, 635148 events. 466488/635148 cut-off events. For 64714/64714 co-relation queries the response was YES. Maximal size of possible extension queue 12835. Compared 4864834 event pairs, 393647 based on Foata normal form. 6800/477751 useless extension candidates. Maximal degree in co-relation 472457. Up to 628790 conditions per place. [2023-08-30 14:18:44,342 INFO L137 encePairwiseOnDemand]: 463/466 looper letters, 105 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-08-30 14:18:44,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 122 transitions, 510 flow [2023-08-30 14:18:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:18:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:18:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 972 transitions. [2023-08-30 14:18:44,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214592274678111 [2023-08-30 14:18:44,345 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 972 transitions. [2023-08-30 14:18:44,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 972 transitions. [2023-08-30 14:18:44,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:44,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 972 transitions. [2023-08-30 14:18:44,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:44,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:44,349 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:44,350 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 266 flow. Second operand 4 states and 972 transitions. [2023-08-30 14:18:44,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 122 transitions, 510 flow [2023-08-30 14:18:44,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 122 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:18:44,371 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 262 flow [2023-08-30 14:18:44,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=111, PETRI_TRANSITIONS=105} [2023-08-30 14:18:44,372 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 3 predicate places. [2023-08-30 14:18:44,372 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 262 flow [2023-08-30 14:18:44,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:44,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:44,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:18:44,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:18:44,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 14:18:44,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:18:44,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:44,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1541123918, now seen corresponding path program 1 times [2023-08-30 14:18:44,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:44,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442528673] [2023-08-30 14:18:44,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:44,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:44,601 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 14:18:44,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442528673] [2023-08-30 14:18:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442528673] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:18:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521484530] [2023-08-30 14:18:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:44,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:44,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:18:44,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:18:44,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:18:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:44,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:18:44,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:18:44,689 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 14:18:44,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:18:44,708 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 14:18:44,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521484530] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:18:44,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:18:44,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:18:44,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112992417] [2023-08-30 14:18:44,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:18:44,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:18:44,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:44,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:18:44,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:18:44,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 466 [2023-08-30 14:18:44,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 217.28571428571428) internal successors, (1521), 7 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:44,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:44,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 466 [2023-08-30 14:18:44,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:48,721 INFO L130 PetriNetUnfolder]: 53772/82082 cut-off events. [2023-08-30 14:18:48,721 INFO L131 PetriNetUnfolder]: For 40961/40961 co-relation queries the response was YES. [2023-08-30 14:18:48,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197580 conditions, 82082 events. 53772/82082 cut-off events. For 40961/40961 co-relation queries the response was YES. Maximal size of possible extension queue 2699. Compared 664331 event pairs, 231 based on Foata normal form. 6817/73882 useless extension candidates. Maximal degree in co-relation 141768. Up to 51680 conditions per place. [2023-08-30 14:18:49,091 INFO L137 encePairwiseOnDemand]: 463/466 looper letters, 173 selfloop transitions, 4 changer transitions 0/189 dead transitions. [2023-08-30 14:18:49,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 189 transitions, 781 flow [2023-08-30 14:18:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:18:49,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:18:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1470 transitions. [2023-08-30 14:18:49,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257510729613734 [2023-08-30 14:18:49,095 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1470 transitions. [2023-08-30 14:18:49,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1470 transitions. [2023-08-30 14:18:49,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:49,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1470 transitions. [2023-08-30 14:18:49,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:49,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 466.0) internal successors, (3262), 7 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:49,103 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 466.0) internal successors, (3262), 7 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:49,103 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 262 flow. Second operand 6 states and 1470 transitions. [2023-08-30 14:18:49,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 189 transitions, 781 flow [2023-08-30 14:18:49,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 189 transitions, 772 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 14:18:49,142 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 198 flow [2023-08-30 14:18:49,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2023-08-30 14:18:49,142 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -20 predicate places. [2023-08-30 14:18:49,143 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 198 flow [2023-08-30 14:18:49,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.28571428571428) internal successors, (1521), 7 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:49,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:49,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:18:49,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:18:49,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:49,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:18:49,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash -820091243, now seen corresponding path program 1 times [2023-08-30 14:18:49,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:49,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037288060] [2023-08-30 14:18:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:49,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:49,387 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 14:18:49,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:49,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037288060] [2023-08-30 14:18:49,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037288060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:49,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:18:49,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:18:49,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441014977] [2023-08-30 14:18:49,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:49,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:18:49,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:49,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:18:49,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:18:49,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 466 [2023-08-30 14:18:49,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:49,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:49,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 466 [2023-08-30 14:18:49,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:49,602 INFO L130 PetriNetUnfolder]: 2224/3463 cut-off events. [2023-08-30 14:18:49,602 INFO L131 PetriNetUnfolder]: For 2571/2571 co-relation queries the response was YES. [2023-08-30 14:18:49,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8356 conditions, 3463 events. 2224/3463 cut-off events. For 2571/2571 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17550 event pairs, 2224 based on Foata normal form. 0/3442 useless extension candidates. Maximal degree in co-relation 8281. Up to 3276 conditions per place. [2023-08-30 14:18:49,614 INFO L137 encePairwiseOnDemand]: 462/466 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 14:18:49,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 29 transitions, 154 flow [2023-08-30 14:18:49,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:18:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:18:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-30 14:18:49,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585121602288984 [2023-08-30 14:18:49,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-30 14:18:49,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-30 14:18:49,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:49,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-30 14:18:49,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:49,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:49,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:49,621 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 198 flow. Second operand 3 states and 641 transitions. [2023-08-30 14:18:49,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 29 transitions, 154 flow [2023-08-30 14:18:49,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 145 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 14:18:49,623 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 95 flow [2023-08-30 14:18:49,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-08-30 14:18:49,624 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -66 predicate places. [2023-08-30 14:18:49,624 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 95 flow [2023-08-30 14:18:49,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:49,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:49,625 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:18:49,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:18:49,625 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:18:49,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1239181162, now seen corresponding path program 1 times [2023-08-30 14:18:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:49,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140073099] [2023-08-30 14:18:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:49,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:18:49,639 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:18:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:18:49,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:18:49,650 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:18:49,650 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-30 14:18:49,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-30 14:18:49,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-30 14:18:49,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-30 14:18:49,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-30 14:18:49,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-30 14:18:49,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-30 14:18:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-30 14:18:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-30 14:18:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-30 14:18:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-30 14:18:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-30 14:18:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-30 14:18:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-30 14:18:49,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-08-30 14:18:49,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-08-30 14:18:49,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-08-30 14:18:49,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-30 14:18:49,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-30 14:18:49,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-08-30 14:18:49,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-30 14:18:49,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-30 14:18:49,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-30 14:18:49,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-30 14:18:49,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-08-30 14:18:49,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:18:49,655 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-30 14:18:49,655 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:18:49,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:18:49,677 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:18:49,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 322 transitions, 688 flow [2023-08-30 14:18:49,774 INFO L130 PetriNetUnfolder]: 127/836 cut-off events. [2023-08-30 14:18:49,775 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:18:49,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 836 events. 127/836 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3765 event pairs, 6 based on Foata normal form. 0/635 useless extension candidates. Maximal degree in co-relation 585. Up to 32 conditions per place. [2023-08-30 14:18:49,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 322 transitions, 688 flow [2023-08-30 14:18:49,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 322 transitions, 688 flow [2023-08-30 14:18:49,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:18:49,799 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 322 transitions, 688 flow [2023-08-30 14:18:49,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 322 transitions, 688 flow [2023-08-30 14:18:49,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 322 transitions, 688 flow [2023-08-30 14:18:50,079 INFO L130 PetriNetUnfolder]: 127/836 cut-off events. [2023-08-30 14:18:50,079 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:18:50,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 836 events. 127/836 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3765 event pairs, 6 based on Foata normal form. 0/635 useless extension candidates. Maximal degree in co-relation 585. Up to 32 conditions per place. [2023-08-30 14:18:50,114 INFO L119 LiptonReduction]: Number of co-enabled transitions 67600 [2023-08-30 14:18:53,220 INFO L134 LiptonReduction]: Checked pairs total: 213943 [2023-08-30 14:18:53,220 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-08-30 14:18:53,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:18:53,222 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;@41ec9e15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:18:53,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-30 14:18:53,224 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-30 14:18:53,224 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:18:53,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:53,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:18:53,224 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:18:53,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2077136858, now seen corresponding path program 1 times [2023-08-30 14:18:53,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:53,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357348180] [2023-08-30 14:18:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:53,252 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 14:18:53,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:53,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357348180] [2023-08-30 14:18:53,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357348180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:53,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:18:53,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:18:53,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731369656] [2023-08-30 14:18:53,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:53,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:18:53,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:53,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:18:53,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:18:53,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 558 [2023-08-30 14:18:53,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 178 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:53,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:53,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 558 [2023-08-30 14:18:53,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand