./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.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/09-regions_21-arrayloop2_nr.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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:24:20,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:24:20,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:24:20,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:24:20,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:24:20,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:24:20,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:24:20,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:24:20,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:24:20,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:24:20,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:24:20,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:24:20,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:24:20,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:24:20,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:24:20,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:24:20,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:24:20,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:24:20,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:24:20,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:24:20,393 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:24:20,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:24:20,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:24:20,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:24:20,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:24:20,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:24:20,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:24:20,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:24:20,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:24:20,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:24:20,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:24:20,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:24:20,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:24:20,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:24:20,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:24:20,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:24:20,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:24:20,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:24:20,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:24:20,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:24:20,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:24:20,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:24:20,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-13 02:24:20,444 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:24:20,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:24:20,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:24:20,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:24:20,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:24:20,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:24:20,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:24:20,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:24:20,446 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:24:20,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:24:20,447 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 02:24:20,448 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:24:20,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:24:20,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 02:24:20,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:24:20,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:24:20,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:24:20,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:24:20,449 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:24:20,450 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 02:24:20,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:24:20,450 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:24:20,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:24:20,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:24:20,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:24:20,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:24:20,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:24:20,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:24:20,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:24:20,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:24:20,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:24:20,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:24:20,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:24:20,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2022-07-13 02:24:20,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:24:20,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:24:20,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:24:20,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:24:20,705 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:24:20,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-07-13 02:24:20,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb99f9c7/4661b3db17d64686bf29f66643d91940/FLAG2ff4c6470 [2022-07-13 02:24:21,272 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:24:21,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-07-13 02:24:21,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb99f9c7/4661b3db17d64686bf29f66643d91940/FLAG2ff4c6470 [2022-07-13 02:24:21,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb99f9c7/4661b3db17d64686bf29f66643d91940 [2022-07-13 02:24:21,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:24:21,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:24:21,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:24:21,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:24:21,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:24:21,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:24:21" (1/1) ... [2022-07-13 02:24:21,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a04dad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:21, skipping insertion in model container [2022-07-13 02:24:21,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:24:21" (1/1) ... [2022-07-13 02:24:21,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:24:21,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:24:22,181 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-13 02:24:22,182 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-13 02:24:22,183 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-13 02:24:22,184 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-13 02:24:22,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:24:22,226 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:24:22,265 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-13 02:24:22,268 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-13 02:24:22,268 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-13 02:24:22,269 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-13 02:24:22,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:24:22,318 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:24:22,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22 WrapperNode [2022-07-13 02:24:22,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:24:22,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:24:22,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:24:22,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:24:22,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (1/1) ... [2022-07-13 02:24:22,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (1/1) ... [2022-07-13 02:24:22,375 INFO L137 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 127 [2022-07-13 02:24:22,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:24:22,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:24:22,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:24:22,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:24:22,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (1/1) ... [2022-07-13 02:24:22,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (1/1) ... [2022-07-13 02:24:22,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (1/1) ... [2022-07-13 02:24:22,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (1/1) ... [2022-07-13 02:24:22,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (1/1) ... [2022-07-13 02:24:22,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (1/1) ... [2022-07-13 02:24:22,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (1/1) ... [2022-07-13 02:24:22,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:24:22,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:24:22,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:24:22,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:24:22,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (1/1) ... [2022-07-13 02:24:22,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:24:22,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:24:22,452 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 02:24:22,454 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 02:24:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-13 02:24:22,489 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-13 02:24:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 02:24:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 02:24:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 02:24:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 02:24:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 02:24:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 02:24:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 02:24:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:24:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 02:24:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:24:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:24:22,492 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 02:24:22,641 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:24:22,643 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:24:22,894 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:24:22,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:24:22,903 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 02:24:22,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:24:22 BoogieIcfgContainer [2022-07-13 02:24:22,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:24:22,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:24:22,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:24:22,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:24:22,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:24:21" (1/3) ... [2022-07-13 02:24:22,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed4ffb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:24:22, skipping insertion in model container [2022-07-13 02:24:22,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:24:22" (2/3) ... [2022-07-13 02:24:22,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed4ffb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:24:22, skipping insertion in model container [2022-07-13 02:24:22,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:24:22" (3/3) ... [2022-07-13 02:24:22,915 INFO L111 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2022-07-13 02:24:22,922 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 02:24:22,931 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:24:22,931 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-07-13 02:24:22,931 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 02:24:22,994 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 02:24:23,023 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:24:23,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 203 transitions, 416 flow [2022-07-13 02:24:23,035 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 203 transitions, 416 flow [2022-07-13 02:24:23,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 203 transitions, 416 flow [2022-07-13 02:24:23,093 INFO L129 PetriNetUnfolder]: 14/201 cut-off events. [2022-07-13 02:24:23,093 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 02:24:23,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 14/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 508 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-07-13 02:24:23,112 INFO L116 LiptonReduction]: Number of co-enabled transitions 7600 [2022-07-13 02:24:54,240 WARN L233 SmtUtils]: Spent 13.36s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 02:24:59,564 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 02:25:12,954 WARN L233 SmtUtils]: Spent 13.39s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 02:25:19,988 WARN L233 SmtUtils]: Spent 7.03s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 02:25:32,254 WARN L233 SmtUtils]: Spent 12.21s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 02:25:39,245 WARN L233 SmtUtils]: Spent 6.99s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 02:25:52,105 WARN L233 SmtUtils]: Spent 12.86s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 02:25:58,908 WARN L233 SmtUtils]: Spent 6.80s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 02:25:58,911 INFO L131 LiptonReduction]: Checked pairs total: 7702 [2022-07-13 02:25:58,911 INFO L133 LiptonReduction]: Total number of compositions: 201 [2022-07-13 02:25:58,918 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 92 flow [2022-07-13 02:25:58,966 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 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 02:25:58,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:25:58,984 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@55c350d5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@535471af [2022-07-13 02:25:58,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-07-13 02:25:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 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 02:25:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-13 02:25:58,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:25:58,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-13 02:25:58,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:25:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:25:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash 667076, now seen corresponding path program 1 times [2022-07-13 02:25:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:25:59,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875612525] [2022-07-13 02:25:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:25:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:25:59,117 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:25:59,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133072344] [2022-07-13 02:25:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:25:59,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:25:59,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:25:59,121 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 02:25:59,122 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 02:25:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:25:59,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:25:59,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:25:59,230 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 02:25:59,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:25:59,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:25:59,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875612525] [2022-07-13 02:25:59,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:25:59,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133072344] [2022-07-13 02:25:59,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133072344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:25:59,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:25:59,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:25:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3420451] [2022-07-13 02:25:59,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:25:59,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:25:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:25:59,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:25:59,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:25:59,259 INFO L87 Difference]: Start difference. First operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 02:25:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:25:59,553 INFO L93 Difference]: Finished difference Result 273 states and 705 transitions. [2022-07-13 02:25:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:25:59,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-07-13 02:25:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:25:59,567 INFO L225 Difference]: With dead ends: 273 [2022-07-13 02:25:59,571 INFO L226 Difference]: Without dead ends: 273 [2022-07-13 02:25:59,572 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 02:25:59,575 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:25:59,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:25:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-07-13 02:25:59,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-07-13 02:25:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 244 states have (on average 2.889344262295082) internal successors, (705), 272 states have internal predecessors, (705), 0 states have call successors, (0), 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 02:25:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 705 transitions. [2022-07-13 02:25:59,633 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 705 transitions. Word has length 3 [2022-07-13 02:25:59,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:25:59,634 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 705 transitions. [2022-07-13 02:25:59,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 02:25:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 705 transitions. [2022-07-13 02:25:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-13 02:25:59,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:25:59,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-13 02:25:59,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 02:25:59,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 02:25:59,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:25:59,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:25:59,859 INFO L85 PathProgramCache]: Analyzing trace with hash 667213, now seen corresponding path program 1 times [2022-07-13 02:25:59,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:25:59,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691790040] [2022-07-13 02:25:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:25:59,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:25:59,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:25:59,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816375407] [2022-07-13 02:25:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:25:59,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:25:59,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:25:59,916 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) [2022-07-13 02:25:59,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 02:26:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:26:00,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:26:00,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:00,045 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 02:26:00,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:26:00,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:00,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691790040] [2022-07-13 02:26:00,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:00,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816375407] [2022-07-13 02:26:00,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816375407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:26:00,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:26:00,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:26:00,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306120092] [2022-07-13 02:26:00,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:26:00,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:26:00,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:00,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:26:00,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:26:00,049 INFO L87 Difference]: Start difference. First operand 273 states and 705 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 02:26:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:00,150 INFO L93 Difference]: Finished difference Result 272 states and 703 transitions. [2022-07-13 02:26:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:26:00,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-07-13 02:26:00,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:00,154 INFO L225 Difference]: With dead ends: 272 [2022-07-13 02:26:00,154 INFO L226 Difference]: Without dead ends: 272 [2022-07-13 02:26:00,154 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 02:26:00,155 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:00,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:26:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-13 02:26:00,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-07-13 02:26:00,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 244 states have (on average 2.8811475409836067) internal successors, (703), 271 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) [2022-07-13 02:26:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2022-07-13 02:26:00,170 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 3 [2022-07-13 02:26:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:00,171 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2022-07-13 02:26:00,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 02:26:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2022-07-13 02:26:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 02:26:00,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:00,172 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-07-13 02:26:00,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 02:26:00,393 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,SelfDestructingSolverStorable1 [2022-07-13 02:26:00,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:00,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash 641181264, now seen corresponding path program 1 times [2022-07-13 02:26:00,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:00,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086243849] [2022-07-13 02:26:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:00,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:00,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:00,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817947509] [2022-07-13 02:26:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:00,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:00,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:00,449 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) [2022-07-13 02:26:00,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 02:26:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:26:00,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 02:26:00,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:26:00,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:26:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:00,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086243849] [2022-07-13 02:26:00,552 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:00,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817947509] [2022-07-13 02:26:00,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817947509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:26:00,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:26:00,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:26:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072832387] [2022-07-13 02:26:00,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:26:00,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:26:00,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:00,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:26:00,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:26:00,560 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 02:26:00,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:00,758 INFO L93 Difference]: Finished difference Result 276 states and 707 transitions. [2022-07-13 02:26:00,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:26:00,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 02:26:00,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:00,761 INFO L225 Difference]: With dead ends: 276 [2022-07-13 02:26:00,761 INFO L226 Difference]: Without dead ends: 276 [2022-07-13 02:26:00,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:26:00,762 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:00,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:26:00,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-13 02:26:00,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2022-07-13 02:26:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 246 states have (on average 2.8739837398373984) internal successors, (707), 273 states have internal predecessors, (707), 0 states have call successors, (0), 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 02:26:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 707 transitions. [2022-07-13 02:26:00,780 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 707 transitions. Word has length 5 [2022-07-13 02:26:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:00,781 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 707 transitions. [2022-07-13 02:26:00,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 02:26:00,781 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 707 transitions. [2022-07-13 02:26:00,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 02:26:00,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:00,782 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-07-13 02:26:00,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 02:26:00,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:00,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:00,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:00,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1597338397, now seen corresponding path program 1 times [2022-07-13 02:26:00,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:00,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453937699] [2022-07-13 02:26:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:00,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:01,025 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:01,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560154109] [2022-07-13 02:26:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:01,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:01,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:01,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:26:01,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 02:26:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:26:01,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:26:01,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:26:01,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:26:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:26:01,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:01,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453937699] [2022-07-13 02:26:01,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:01,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560154109] [2022-07-13 02:26:01,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560154109] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:26:01,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:26:01,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-13 02:26:01,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31734783] [2022-07-13 02:26:01,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:26:01,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:26:01,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:01,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:26:01,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:26:01,212 INFO L87 Difference]: Start difference. First operand 274 states and 707 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 02:26:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:01,467 INFO L93 Difference]: Finished difference Result 286 states and 719 transitions. [2022-07-13 02:26:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:26:01,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 6 [2022-07-13 02:26:01,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:01,470 INFO L225 Difference]: With dead ends: 286 [2022-07-13 02:26:01,470 INFO L226 Difference]: Without dead ends: 286 [2022-07-13 02:26:01,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:26:01,471 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:01,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:26:01,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-07-13 02:26:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2022-07-13 02:26:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8531746031746033) internal successors, (719), 279 states have internal predecessors, (719), 0 states have call successors, (0), 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 02:26:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 719 transitions. [2022-07-13 02:26:01,482 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 719 transitions. Word has length 6 [2022-07-13 02:26:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:01,482 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 719 transitions. [2022-07-13 02:26:01,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 02:26:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 719 transitions. [2022-07-13 02:26:01,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:26:01,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:01,483 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-07-13 02:26:01,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 02:26:01,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:01,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:01,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:01,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1492765936, now seen corresponding path program 2 times [2022-07-13 02:26:01,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:01,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575273232] [2022-07-13 02:26:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:01,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:01,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:01,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772193604] [2022-07-13 02:26:01,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:26:01,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:01,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:01,770 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:26:01,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 02:26:01,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 02:26:01,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:26:01,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:26:01,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 02:26:01,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:26:01,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:01,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575273232] [2022-07-13 02:26:01,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:01,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772193604] [2022-07-13 02:26:01,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772193604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:26:01,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:26:01,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:26:01,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873309899] [2022-07-13 02:26:01,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:26:01,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:26:01,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:01,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:26:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:26:01,971 INFO L87 Difference]: Start difference. First operand 280 states and 719 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 02:26:02,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:02,190 INFO L93 Difference]: Finished difference Result 280 states and 717 transitions. [2022-07-13 02:26:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:26:02,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 02:26:02,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:02,192 INFO L225 Difference]: With dead ends: 280 [2022-07-13 02:26:02,192 INFO L226 Difference]: Without dead ends: 280 [2022-07-13 02:26:02,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 02:26:02,193 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:02,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:26:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-13 02:26:02,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-07-13 02:26:02,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8452380952380953) internal successors, (717), 279 states have internal predecessors, (717), 0 states have call successors, (0), 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 02:26:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 717 transitions. [2022-07-13 02:26:02,223 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 717 transitions. Word has length 9 [2022-07-13 02:26:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:02,223 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 717 transitions. [2022-07-13 02:26:02,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 02:26:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 717 transitions. [2022-07-13 02:26:02,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 02:26:02,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:02,224 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-07-13 02:26:02,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 02:26:02,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:02,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:02,447 INFO L85 PathProgramCache]: Analyzing trace with hash 968900939, now seen corresponding path program 3 times [2022-07-13 02:26:02,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:02,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362564109] [2022-07-13 02:26:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:02,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:02,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:02,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472877646] [2022-07-13 02:26:02,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:26:02,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:02,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:02,536 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:26:02,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 02:26:02,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 02:26:02,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:26:02,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 02:26:02,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 02:26:02,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:26:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 02:26:03,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:03,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362564109] [2022-07-13 02:26:03,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:03,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472877646] [2022-07-13 02:26:03,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472877646] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:26:03,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:26:03,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-07-13 02:26:03,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849362808] [2022-07-13 02:26:03,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:26:03,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:26:03,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:26:03,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:26:03,010 INFO L87 Difference]: Start difference. First operand 280 states and 717 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 02:26:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:04,023 INFO L93 Difference]: Finished difference Result 281 states and 714 transitions. [2022-07-13 02:26:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:26:04,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-07-13 02:26:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:04,025 INFO L225 Difference]: With dead ends: 281 [2022-07-13 02:26:04,026 INFO L226 Difference]: Without dead ends: 281 [2022-07-13 02:26:04,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:26:04,027 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:04,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 02:26:04,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-07-13 02:26:04,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280. [2022-07-13 02:26:04,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8333333333333335) internal successors, (714), 279 states have internal predecessors, (714), 0 states have call successors, (0), 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 02:26:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 714 transitions. [2022-07-13 02:26:04,036 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 714 transitions. Word has length 10 [2022-07-13 02:26:04,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:04,036 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 714 transitions. [2022-07-13 02:26:04,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 02:26:04,037 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 714 transitions. [2022-07-13 02:26:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 02:26:04,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:04,037 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-07-13 02:26:04,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 02:26:04,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:04,252 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:04,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash 968901023, now seen corresponding path program 1 times [2022-07-13 02:26:04,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:04,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493088853] [2022-07-13 02:26:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:04,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:04,335 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:04,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574559581] [2022-07-13 02:26:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:04,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:04,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:04,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:26:04,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 02:26:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:26:04,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:26:04,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:26:04,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:26:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:26:04,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:04,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493088853] [2022-07-13 02:26:04,889 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:04,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574559581] [2022-07-13 02:26:04,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574559581] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:26:04,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:26:04,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-13 02:26:04,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20923492] [2022-07-13 02:26:04,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:26:04,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 02:26:04,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 02:26:04,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-13 02:26:04,891 INFO L87 Difference]: Start difference. First operand 280 states and 714 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 02:26:05,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:05,751 INFO L93 Difference]: Finished difference Result 305 states and 738 transitions. [2022-07-13 02:26:05,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 02:26:05,751 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 10 [2022-07-13 02:26:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:05,753 INFO L225 Difference]: With dead ends: 305 [2022-07-13 02:26:05,753 INFO L226 Difference]: Without dead ends: 305 [2022-07-13 02:26:05,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-13 02:26:05,753 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:05,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 02:26:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-07-13 02:26:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 292. [2022-07-13 02:26:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 264 states have (on average 2.7954545454545454) internal successors, (738), 291 states have internal predecessors, (738), 0 states have call successors, (0), 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 02:26:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 738 transitions. [2022-07-13 02:26:05,761 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 738 transitions. Word has length 10 [2022-07-13 02:26:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:05,761 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 738 transitions. [2022-07-13 02:26:05,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 02:26:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 738 transitions. [2022-07-13 02:26:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 02:26:05,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:05,762 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-07-13 02:26:05,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 02:26:05,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:05,963 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:05,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1488615809, now seen corresponding path program 2 times [2022-07-13 02:26:05,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:05,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678862116] [2022-07-13 02:26:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:05,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:06,081 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:06,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140482304] [2022-07-13 02:26:06,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:26:06,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:06,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:06,083 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:26:06,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 02:26:06,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:26:06,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:26:06,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 02:26:06,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:26:06,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:26:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:26:07,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:07,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678862116] [2022-07-13 02:26:07,154 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:07,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140482304] [2022-07-13 02:26:07,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140482304] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:26:07,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:26:07,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-13 02:26:07,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614382718] [2022-07-13 02:26:07,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:26:07,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 02:26:07,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:07,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 02:26:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-13 02:26:07,157 INFO L87 Difference]: Start difference. First operand 292 states and 738 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:26:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:09,356 INFO L93 Difference]: Finished difference Result 353 states and 786 transitions. [2022-07-13 02:26:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 02:26:09,356 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 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 16 [2022-07-13 02:26:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:09,358 INFO L225 Difference]: With dead ends: 353 [2022-07-13 02:26:09,358 INFO L226 Difference]: Without dead ends: 353 [2022-07-13 02:26:09,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-13 02:26:09,359 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 124 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:09,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 0 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 02:26:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-07-13 02:26:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 316. [2022-07-13 02:26:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 288 states have (on average 2.7291666666666665) internal successors, (786), 315 states have internal predecessors, (786), 0 states have call successors, (0), 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 02:26:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 786 transitions. [2022-07-13 02:26:09,368 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 786 transitions. Word has length 16 [2022-07-13 02:26:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:09,369 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 786 transitions. [2022-07-13 02:26:09,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:26:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 786 transitions. [2022-07-13 02:26:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 02:26:09,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:09,370 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-07-13 02:26:09,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 02:26:09,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-13 02:26:09,583 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:09,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1554028607, now seen corresponding path program 3 times [2022-07-13 02:26:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:09,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564315484] [2022-07-13 02:26:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:09,791 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:09,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318725422] [2022-07-13 02:26:09,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:26:09,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:09,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:09,796 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:26:09,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 02:26:10,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 02:26:10,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:26:10,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:26:10,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-13 02:26:10,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:26:10,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:10,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564315484] [2022-07-13 02:26:10,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:10,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318725422] [2022-07-13 02:26:10,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318725422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:26:10,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:26:10,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:26:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553922583] [2022-07-13 02:26:10,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:26:10,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:26:10,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:10,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:26:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:26:10,692 INFO L87 Difference]: Start difference. First operand 316 states and 786 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 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 02:26:10,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:10,952 INFO L93 Difference]: Finished difference Result 314 states and 763 transitions. [2022-07-13 02:26:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:26:10,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 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 28 [2022-07-13 02:26:10,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:10,959 INFO L225 Difference]: With dead ends: 314 [2022-07-13 02:26:10,959 INFO L226 Difference]: Without dead ends: 314 [2022-07-13 02:26:10,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:26:10,961 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:10,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:26:10,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-13 02:26:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2022-07-13 02:26:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 288 states have (on average 2.6493055555555554) internal successors, (763), 313 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) [2022-07-13 02:26:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 763 transitions. [2022-07-13 02:26:10,973 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 763 transitions. Word has length 28 [2022-07-13 02:26:10,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:10,973 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 763 transitions. [2022-07-13 02:26:10,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 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 02:26:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 763 transitions. [2022-07-13 02:26:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 02:26:10,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:10,975 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:26:11,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 02:26:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:11,191 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:11,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -801047509, now seen corresponding path program 1 times [2022-07-13 02:26:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:11,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658763567] [2022-07-13 02:26:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:11,395 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:11,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587134849] [2022-07-13 02:26:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:11,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:11,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:11,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:26:11,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 02:26:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:26:13,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 5295 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 02:26:13,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:26:13,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:26:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:26:13,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:13,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658763567] [2022-07-13 02:26:13,535 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:13,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587134849] [2022-07-13 02:26:13,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587134849] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:26:13,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:26:13,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-07-13 02:26:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364821089] [2022-07-13 02:26:13,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:26:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-13 02:26:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-13 02:26:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-07-13 02:26:13,538 INFO L87 Difference]: Start difference. First operand 314 states and 763 transitions. Second operand has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 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 02:26:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:15,700 INFO L93 Difference]: Finished difference Result 355 states and 787 transitions. [2022-07-13 02:26:15,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-13 02:26:15,701 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 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 31 [2022-07-13 02:26:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:15,702 INFO L225 Difference]: With dead ends: 355 [2022-07-13 02:26:15,703 INFO L226 Difference]: Without dead ends: 355 [2022-07-13 02:26:15,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-07-13 02:26:15,703 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:15,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 02:26:15,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-13 02:26:15,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 330. [2022-07-13 02:26:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 304 states have (on average 2.588815789473684) internal successors, (787), 329 states have internal predecessors, (787), 0 states have call successors, (0), 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 02:26:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 787 transitions. [2022-07-13 02:26:15,711 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 787 transitions. Word has length 31 [2022-07-13 02:26:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:15,711 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 787 transitions. [2022-07-13 02:26:15,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 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 02:26:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 787 transitions. [2022-07-13 02:26:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 02:26:15,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:15,712 INFO L195 NwaCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:26:15,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 02:26:15,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 02:26:15,937 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:15,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1108552277, now seen corresponding path program 2 times [2022-07-13 02:26:15,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:15,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175649168] [2022-07-13 02:26:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:16,224 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:16,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296370439] [2022-07-13 02:26:16,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:26:16,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:16,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:16,228 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:26:16,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 02:26:18,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:26:18,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:26:18,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 7167 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:26:18,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-07-13 02:26:18,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:26:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-07-13 02:26:18,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:18,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175649168] [2022-07-13 02:26:18,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:18,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296370439] [2022-07-13 02:26:18,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296370439] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:26:18,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:26:18,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-07-13 02:26:18,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937780919] [2022-07-13 02:26:18,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:26:18,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:26:18,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:18,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:26:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:26:18,488 INFO L87 Difference]: Start difference. First operand 330 states and 787 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 02:26:19,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:19,002 INFO L93 Difference]: Finished difference Result 394 states and 907 transitions. [2022-07-13 02:26:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:26:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 39 [2022-07-13 02:26:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:19,004 INFO L225 Difference]: With dead ends: 394 [2022-07-13 02:26:19,005 INFO L226 Difference]: Without dead ends: 394 [2022-07-13 02:26:19,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:26:19,005 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:19,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 02:26:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-07-13 02:26:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2022-07-13 02:26:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 369 states have (on average 2.4579945799457996) internal successors, (907), 393 states have internal predecessors, (907), 0 states have call successors, (0), 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 02:26:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 907 transitions. [2022-07-13 02:26:19,015 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 907 transitions. Word has length 39 [2022-07-13 02:26:19,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:19,016 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 907 transitions. [2022-07-13 02:26:19,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 02:26:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 907 transitions. [2022-07-13 02:26:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 02:26:19,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:19,017 INFO L195 NwaCegarLoop]: trace histogram [34, 2, 1, 1, 1] [2022-07-13 02:26:19,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 02:26:19,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 02:26:19,232 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash 308406448, now seen corresponding path program 4 times [2022-07-13 02:26:19,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:19,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044431319] [2022-07-13 02:26:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:19,498 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:19,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301472393] [2022-07-13 02:26:19,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:26:19,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:19,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:19,503 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:26:19,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 02:26:37,103 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:26:37,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:26:37,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 8080 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:26:37,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:26:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-07-13 02:26:37,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:26:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-07-13 02:26:41,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:26:41,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044431319] [2022-07-13 02:26:41,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:26:41,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301472393] [2022-07-13 02:26:41,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301472393] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:26:41,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:26:41,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-07-13 02:26:41,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546757212] [2022-07-13 02:26:41,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:26:41,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:26:41,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:26:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:26:41,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:26:41,853 INFO L87 Difference]: Start difference. First operand 394 states and 907 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 02:26:42,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:26:42,038 INFO L93 Difference]: Finished difference Result 394 states and 853 transitions. [2022-07-13 02:26:42,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:26:42,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 39 [2022-07-13 02:26:42,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:26:42,041 INFO L225 Difference]: With dead ends: 394 [2022-07-13 02:26:42,041 INFO L226 Difference]: Without dead ends: 394 [2022-07-13 02:26:42,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:26:42,042 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:26:42,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2022-07-13 02:26:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-07-13 02:26:42,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2022-07-13 02:26:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 369 states have (on average 2.3116531165311653) internal successors, (853), 393 states have internal predecessors, (853), 0 states have call successors, (0), 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 02:26:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 853 transitions. [2022-07-13 02:26:42,053 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 853 transitions. Word has length 39 [2022-07-13 02:26:42,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:26:42,054 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 853 transitions. [2022-07-13 02:26:42,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 02:26:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 853 transitions. [2022-07-13 02:26:42,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 02:26:42,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:26:42,060 INFO L195 NwaCegarLoop]: trace histogram [94, 4, 3, 1, 1] [2022-07-13 02:26:42,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 02:26:42,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 02:26:42,275 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-13 02:26:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:26:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1181690616, now seen corresponding path program 5 times [2022-07-13 02:26:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:26:42,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855013450] [2022-07-13 02:26:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:26:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:26:43,055 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:26:43,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279576331] [2022-07-13 02:26:43,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:26:43,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:26:43,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:26:43,059 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:26:43,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process