./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c 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 ../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:29:07,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:29:07,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:29:07,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:29:07,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:29:07,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:29:07,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:29:07,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:29:07,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:29:07,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:29:07,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:29:07,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:29:07,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:29:07,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:29:07,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:29:07,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:29:07,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:29:07,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:29:07,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:29:07,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:29:07,447 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:29:07,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:29:07,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:29:07,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:29:07,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:29:07,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:29:07,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:29:07,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:29:07,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:29:07,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:29:07,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:29:07,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:29:07,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:29:07,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:29:07,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:29:07,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:29:07,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:29:07,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:29:07,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:29:07,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:29:07,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:29:07,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:29:07,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-13 02:29:07,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:29:07,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:29:07,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:29:07,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:29:07,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:29:07,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:29:07,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:29:07,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:29:07,497 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:29:07,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:29:07,497 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 02:29:07,497 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:29:07,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:29:07,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 02:29:07,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:29:07,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:29:07,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:29:07,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:29:07,498 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:29:07,498 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 02:29:07,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:29:07,498 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:29:07,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:29:07,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:29:07,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:29:07,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:29:07,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:29:07,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:29:07,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:29:07,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:29:07,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:29:07,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:29:07,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:29:07,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2022-07-13 02:29:07,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:29:07,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:29:07,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:29:07,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:29:07,706 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:29:07,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-07-13 02:29:07,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e60a431f/a4cad005505f414bbe612fb3f7fb99c0/FLAGcfd71f243 [2022-07-13 02:29:08,130 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:29:08,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-07-13 02:29:08,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e60a431f/a4cad005505f414bbe612fb3f7fb99c0/FLAGcfd71f243 [2022-07-13 02:29:08,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e60a431f/a4cad005505f414bbe612fb3f7fb99c0 [2022-07-13 02:29:08,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:29:08,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:29:08,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:29:08,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:29:08,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:29:08,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:29:08" (1/1) ... [2022-07-13 02:29:08,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81b1eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:08, skipping insertion in model container [2022-07-13 02:29:08,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:29:08" (1/1) ... [2022-07-13 02:29:08,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:29:08,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:29:08,959 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-07-13 02:29:08,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:29:08,998 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:29:09,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-07-13 02:29:09,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:29:09,112 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:29:09,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09 WrapperNode [2022-07-13 02:29:09,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:29:09,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:29:09,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:29:09,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:29:09,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (1/1) ... [2022-07-13 02:29:09,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (1/1) ... [2022-07-13 02:29:09,163 INFO L137 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2022-07-13 02:29:09,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:29:09,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:29:09,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:29:09,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:29:09,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (1/1) ... [2022-07-13 02:29:09,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (1/1) ... [2022-07-13 02:29:09,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (1/1) ... [2022-07-13 02:29:09,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (1/1) ... [2022-07-13 02:29:09,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (1/1) ... [2022-07-13 02:29:09,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (1/1) ... [2022-07-13 02:29:09,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (1/1) ... [2022-07-13 02:29:09,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:29:09,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:29:09,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:29:09,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:29:09,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (1/1) ... [2022-07-13 02:29:09,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:29:09,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:29:09,239 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) [2022-07-13 02:29:09,250 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 [2022-07-13 02:29:09,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 02:29:09,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 02:29:09,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 02:29:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 02:29:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 02:29:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:29:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-13 02:29:09,267 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-13 02:29:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 02:29:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:29:09,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:29:09,269 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 02:29:09,379 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:29:09,380 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:29:09,632 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:29:09,643 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:29:09,644 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-13 02:29:09,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:29:09 BoogieIcfgContainer [2022-07-13 02:29:09,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:29:09,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:29:09,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:29:09,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:29:09,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:29:08" (1/3) ... [2022-07-13 02:29:09,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42cb8ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:29:09, skipping insertion in model container [2022-07-13 02:29:09,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:29:09" (2/3) ... [2022-07-13 02:29:09,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42cb8ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:29:09, skipping insertion in model container [2022-07-13 02:29:09,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:29:09" (3/3) ... [2022-07-13 02:29:09,659 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2022-07-13 02:29:09,664 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 02:29:09,672 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:29:09,672 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-07-13 02:29:09,672 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 02:29:09,728 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-13 02:29:09,765 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:29:09,777 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 178 transitions, 364 flow [2022-07-13 02:29:09,783 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 178 transitions, 364 flow [2022-07-13 02:29:09,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 162 places, 178 transitions, 364 flow [2022-07-13 02:29:09,861 INFO L129 PetriNetUnfolder]: 24/217 cut-off events. [2022-07-13 02:29:09,862 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 02:29:09,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 217 events. 24/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 636 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2022-07-13 02:29:09,873 INFO L116 LiptonReduction]: Number of co-enabled transitions 8036 [2022-07-13 02:29:13,275 INFO L131 LiptonReduction]: Checked pairs total: 12894 [2022-07-13 02:29:13,275 INFO L133 LiptonReduction]: Total number of compositions: 165 [2022-07-13 02:29:13,281 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 64 transitions, 136 flow [2022-07-13 02:29:13,346 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 479 states, 432 states have (on average 2.701388888888889) internal successors, (1167), 478 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:13,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:29:13,362 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c013786, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13d5b292 [2022-07-13 02:29:13,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-07-13 02:29:13,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 479 states, 432 states have (on average 2.701388888888889) internal successors, (1167), 478 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-13 02:29:13,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:13,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-13 02:29:13,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:13,376 INFO L85 PathProgramCache]: Analyzing trace with hash 21889042, now seen corresponding path program 1 times [2022-07-13 02:29:13,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:13,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936646141] [2022-07-13 02:29:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:13,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:29:13,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:13,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936646141] [2022-07-13 02:29:13,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936646141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:13,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:29:13,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:29:13,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450303123] [2022-07-13 02:29:13,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:13,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:29:13,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:29:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:13,564 INFO L87 Difference]: Start difference. First operand has 479 states, 432 states have (on average 2.701388888888889) internal successors, (1167), 478 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:13,687 INFO L93 Difference]: Finished difference Result 414 states and 791 transitions. [2022-07-13 02:29:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:29:13,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-07-13 02:29:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:13,697 INFO L225 Difference]: With dead ends: 414 [2022-07-13 02:29:13,697 INFO L226 Difference]: Without dead ends: 405 [2022-07-13 02:29:13,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:13,700 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:13,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:29:13,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-13 02:29:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2022-07-13 02:29:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 378 states have (on average 2.0476190476190474) internal successors, (774), 404 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 774 transitions. [2022-07-13 02:29:13,752 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 774 transitions. Word has length 4 [2022-07-13 02:29:13,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:13,752 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 774 transitions. [2022-07-13 02:29:13,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 774 transitions. [2022-07-13 02:29:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 02:29:13,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:13,753 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-07-13 02:29:13,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:29:13,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:13,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash -439414521, now seen corresponding path program 1 times [2022-07-13 02:29:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:13,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242589745] [2022-07-13 02:29:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:13,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:29:13,790 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 02:29:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:29:13,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 02:29:13,823 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 02:29:13,824 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-07-13 02:29:13,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-07-13 02:29:13,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-07-13 02:29:13,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-07-13 02:29:13,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-07-13 02:29:13,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-07-13 02:29:13,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-07-13 02:29:13,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-07-13 02:29:13,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-07-13 02:29:13,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-07-13 02:29:13,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-07-13 02:29:13,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-07-13 02:29:13,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-07-13 02:29:13,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-07-13 02:29:13,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-07-13 02:29:13,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-07-13 02:29:13,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-07-13 02:29:13,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-07-13 02:29:13,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-07-13 02:29:13,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-07-13 02:29:13,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-07-13 02:29:13,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:29:13,831 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 02:29:13,832 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 02:29:13,832 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-13 02:29:13,853 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 02:29:13,860 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:29:13,860 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 262 transitions, 542 flow [2022-07-13 02:29:13,860 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 262 transitions, 542 flow [2022-07-13 02:29:13,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 542 flow [2022-07-13 02:29:13,926 INFO L129 PetriNetUnfolder]: 45/377 cut-off events. [2022-07-13 02:29:13,926 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-13 02:29:13,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 377 events. 45/377 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1424 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-07-13 02:29:13,945 INFO L116 LiptonReduction]: Number of co-enabled transitions 32636 [2022-07-13 02:29:17,898 INFO L131 LiptonReduction]: Checked pairs total: 88891 [2022-07-13 02:29:17,898 INFO L133 LiptonReduction]: Total number of compositions: 231 [2022-07-13 02:29:17,903 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 117 transitions, 252 flow [2022-07-13 02:29:18,419 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 19420 states, 18941 states have (on average 3.81801383242701) internal successors, (72317), 19419 states have internal predecessors, (72317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:18,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:29:18,422 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c013786, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13d5b292 [2022-07-13 02:29:18,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-07-13 02:29:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 19420 states, 18941 states have (on average 3.81801383242701) internal successors, (72317), 19419 states have internal predecessors, (72317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 02:29:18,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:18,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-13 02:29:18,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-07-13 02:29:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:18,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1229744044, now seen corresponding path program 1 times [2022-07-13 02:29:18,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:18,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304936612] [2022-07-13 02:29:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:18,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:29:18,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:18,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304936612] [2022-07-13 02:29:18,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304936612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:18,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:29:18,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:29:18,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464634564] [2022-07-13 02:29:18,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:18,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:29:18,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:18,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:29:18,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:18,565 INFO L87 Difference]: Start difference. First operand has 19420 states, 18941 states have (on average 3.81801383242701) internal successors, (72317), 19419 states have internal predecessors, (72317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:18,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:18,958 INFO L93 Difference]: Finished difference Result 19347 states and 56143 transitions. [2022-07-13 02:29:18,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:29:18,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-13 02:29:18,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:19,067 INFO L225 Difference]: With dead ends: 19347 [2022-07-13 02:29:19,067 INFO L226 Difference]: Without dead ends: 19282 [2022-07-13 02:29:19,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:19,070 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:19,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 32 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:29:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19282 states. [2022-07-13 02:29:19,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19282 to 19282. [2022-07-13 02:29:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19282 states, 18825 states have (on average 2.9721115537848606) internal successors, (55950), 19281 states have internal predecessors, (55950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19282 states to 19282 states and 55950 transitions. [2022-07-13 02:29:19,909 INFO L78 Accepts]: Start accepts. Automaton has 19282 states and 55950 transitions. Word has length 5 [2022-07-13 02:29:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:19,910 INFO L495 AbstractCegarLoop]: Abstraction has 19282 states and 55950 transitions. [2022-07-13 02:29:19,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 19282 states and 55950 transitions. [2022-07-13 02:29:19,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:29:19,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:19,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:29:19,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 02:29:19,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-07-13 02:29:19,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash -967553132, now seen corresponding path program 1 times [2022-07-13 02:29:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:19,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302874228] [2022-07-13 02:29:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:29:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:19,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302874228] [2022-07-13 02:29:19,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302874228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:19,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:29:19,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:29:19,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541111209] [2022-07-13 02:29:19,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:19,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:29:19,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:19,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:29:19,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:19,950 INFO L87 Difference]: Start difference. First operand 19282 states and 55950 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:20,320 INFO L93 Difference]: Finished difference Result 21936 states and 60308 transitions. [2022-07-13 02:29:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:29:20,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 02:29:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:20,392 INFO L225 Difference]: With dead ends: 21936 [2022-07-13 02:29:20,393 INFO L226 Difference]: Without dead ends: 21864 [2022-07-13 02:29:20,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:20,395 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 59 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:20,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 34 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:29:20,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21864 states. [2022-07-13 02:29:20,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21864 to 20398. [2022-07-13 02:29:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20398 states, 20021 states have (on average 2.8798761300634332) internal successors, (57658), 20397 states have internal predecessors, (57658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20398 states to 20398 states and 57658 transitions. [2022-07-13 02:29:20,959 INFO L78 Accepts]: Start accepts. Automaton has 20398 states and 57658 transitions. Word has length 9 [2022-07-13 02:29:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:20,959 INFO L495 AbstractCegarLoop]: Abstraction has 20398 states and 57658 transitions. [2022-07-13 02:29:20,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 20398 states and 57658 transitions. [2022-07-13 02:29:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:29:20,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:20,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:29:20,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 02:29:20,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-07-13 02:29:20,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:20,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2084013486, now seen corresponding path program 1 times [2022-07-13 02:29:20,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:20,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505335460] [2022-07-13 02:29:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:20,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:29:21,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:21,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505335460] [2022-07-13 02:29:21,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505335460] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:29:21,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790800201] [2022-07-13 02:29:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:21,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:29:21,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:29:21,029 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) [2022-07-13 02:29:21,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 02:29:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:21,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 02:29:21,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:29:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:29:21,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:29:21,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790800201] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:21,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:29:21,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-07-13 02:29:21,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673241076] [2022-07-13 02:29:21,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:21,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:29:21,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:21,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:29:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:29:21,161 INFO L87 Difference]: Start difference. First operand 20398 states and 57658 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:21,368 INFO L93 Difference]: Finished difference Result 19421 states and 54735 transitions. [2022-07-13 02:29:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:29:21,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 02:29:21,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:21,563 INFO L225 Difference]: With dead ends: 19421 [2022-07-13 02:29:21,571 INFO L226 Difference]: Without dead ends: 19421 [2022-07-13 02:29:21,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:29:21,572 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 169 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:21,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 26 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:29:21,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19421 states. [2022-07-13 02:29:21,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19421 to 19421. [2022-07-13 02:29:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19421 states, 19109 states have (on average 2.864357109215553) internal successors, (54735), 19420 states have internal predecessors, (54735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19421 states to 19421 states and 54735 transitions. [2022-07-13 02:29:22,044 INFO L78 Accepts]: Start accepts. Automaton has 19421 states and 54735 transitions. Word has length 9 [2022-07-13 02:29:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:22,045 INFO L495 AbstractCegarLoop]: Abstraction has 19421 states and 54735 transitions. [2022-07-13 02:29:22,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 19421 states and 54735 transitions. [2022-07-13 02:29:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:29:22,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:22,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:29:22,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 02:29:22,263 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 [2022-07-13 02:29:22,264 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-07-13 02:29:22,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2084013487, now seen corresponding path program 1 times [2022-07-13 02:29:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:22,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781675969] [2022-07-13 02:29:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:22,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:29:22,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:22,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781675969] [2022-07-13 02:29:22,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781675969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:22,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:29:22,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:29:22,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250573131] [2022-07-13 02:29:22,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:22,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:29:22,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:22,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:29:22,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:22,289 INFO L87 Difference]: Start difference. First operand 19421 states and 54735 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:22,631 INFO L93 Difference]: Finished difference Result 18444 states and 51812 transitions. [2022-07-13 02:29:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:29:22,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 02:29:22,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:22,677 INFO L225 Difference]: With dead ends: 18444 [2022-07-13 02:29:22,678 INFO L226 Difference]: Without dead ends: 18444 [2022-07-13 02:29:22,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:22,679 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 68 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:22,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 30 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:29:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18444 states. [2022-07-13 02:29:23,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18444 to 18444. [2022-07-13 02:29:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18444 states, 18197 states have (on average 2.8472825190965545) internal successors, (51812), 18443 states have internal predecessors, (51812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18444 states to 18444 states and 51812 transitions. [2022-07-13 02:29:23,111 INFO L78 Accepts]: Start accepts. Automaton has 18444 states and 51812 transitions. Word has length 9 [2022-07-13 02:29:23,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:23,112 INFO L495 AbstractCegarLoop]: Abstraction has 18444 states and 51812 transitions. [2022-07-13 02:29:23,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 18444 states and 51812 transitions. [2022-07-13 02:29:23,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:29:23,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:23,117 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-07-13 02:29:23,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 02:29:23,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-07-13 02:29:23,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1282269832, now seen corresponding path program 1 times [2022-07-13 02:29:23,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:23,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358258815] [2022-07-13 02:29:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:23,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:29:23,137 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 02:29:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:29:23,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 02:29:23,155 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 02:29:23,155 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-07-13 02:29:23,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-07-13 02:29:23,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-07-13 02:29:23,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-07-13 02:29:23,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-07-13 02:29:23,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-07-13 02:29:23,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-07-13 02:29:23,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-07-13 02:29:23,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-07-13 02:29:23,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-07-13 02:29:23,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-07-13 02:29:23,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-07-13 02:29:23,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-07-13 02:29:23,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-07-13 02:29:23,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-07-13 02:29:23,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-07-13 02:29:23,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-07-13 02:29:23,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-07-13 02:29:23,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-07-13 02:29:23,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-07-13 02:29:23,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-07-13 02:29:23,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-07-13 02:29:23,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-07-13 02:29:23,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-07-13 02:29:23,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-07-13 02:29:23,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-07-13 02:29:23,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-07-13 02:29:23,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-07-13 02:29:23,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-07-13 02:29:23,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 02:29:23,165 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-13 02:29:23,165 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 02:29:23,166 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-13 02:29:23,199 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 02:29:23,202 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:29:23,203 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 346 transitions, 722 flow [2022-07-13 02:29:23,203 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 346 transitions, 722 flow [2022-07-13 02:29:23,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 306 places, 346 transitions, 722 flow [2022-07-13 02:29:23,300 INFO L129 PetriNetUnfolder]: 71/578 cut-off events. [2022-07-13 02:29:23,300 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-13 02:29:23,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 578 events. 71/578 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2405 event pairs, 1 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 385. Up to 16 conditions per place. [2022-07-13 02:29:23,341 INFO L116 LiptonReduction]: Number of co-enabled transitions 69864 [2022-07-13 02:29:28,472 INFO L131 LiptonReduction]: Checked pairs total: 182652 [2022-07-13 02:29:28,472 INFO L133 LiptonReduction]: Total number of compositions: 301 [2022-07-13 02:29:28,473 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 164 transitions, 358 flow [2022-07-13 02:29:48,890 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 649093 states, 644456 states have (on average 5.105492073935226) internal successors, (3290265), 649092 states have internal predecessors, (3290265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:48,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:29:48,899 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c013786, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13d5b292 [2022-07-13 02:29:48,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-07-13 02:29:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 649093 states, 644456 states have (on average 5.105492073935226) internal successors, (3290265), 649092 states have internal predecessors, (3290265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 02:29:50,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:50,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-13 02:29:50,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-07-13 02:29:50,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1927386181, now seen corresponding path program 1 times [2022-07-13 02:29:50,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:50,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417339396] [2022-07-13 02:29:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:50,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:29:50,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:50,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417339396] [2022-07-13 02:29:50,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417339396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:50,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:29:50,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:29:50,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006252865] [2022-07-13 02:29:50,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:50,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:29:50,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:50,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:29:50,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:53,154 INFO L87 Difference]: Start difference. First operand has 649093 states, 644456 states have (on average 5.105492073935226) internal successors, (3290265), 649092 states have internal predecessors, (3290265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:30:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:30:03,547 INFO L93 Difference]: Finished difference Result 649020 states and 2522201 transitions. [2022-07-13 02:30:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:30:03,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-13 02:30:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted.