./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Collatz_bounded.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b 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/termination-crafted/Collatz_bounded.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:36:31,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:36:31,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:36:31,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:36:31,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:36:31,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:36:31,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:36:31,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:36:31,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:36:31,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:36:31,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:36:31,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:36:31,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:36:31,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:36:31,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:36:31,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:36:31,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:36:31,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:36:31,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:36:31,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:36:31,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:36:31,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:36:31,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:36:31,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:36:31,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:36:31,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:36:31,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:36:31,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:36:31,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:36:31,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:36:31,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:36:31,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:36:31,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:36:31,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:36:31,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:36:31,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:36:31,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:36:31,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:36:31,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:36:31,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:36:31,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:36:31,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-14 22:36:31,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:36:31,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:36:31,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:36:31,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:36:31,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 22:36:31,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 22:36:31,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:36:31,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:36:31,466 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:36:31,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:36:31,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:36:31,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:36:31,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:36:31,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 22:36:31,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 22:36:31,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 22:36:31,467 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-14 22:36:31,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 22:36:31,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:36:31,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 22:36:31,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:36:31,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:36:31,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 22:36:31,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 22:36:31,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:36:31,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 22:36:31,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 22:36:31,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 22:36:31,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 22:36:31,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 22:36:31,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:36:31,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef [2021-12-14 22:36:31,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:36:31,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:36:31,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:36:31,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:36:31,658 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:36:31,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2021-12-14 22:36:31,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b2a1fe28/f48e20064bed41fbaab9b6131f657663/FLAG31773444f [2021-12-14 22:36:32,062 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:36:32,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2021-12-14 22:36:32,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b2a1fe28/f48e20064bed41fbaab9b6131f657663/FLAG31773444f [2021-12-14 22:36:32,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b2a1fe28/f48e20064bed41fbaab9b6131f657663 [2021-12-14 22:36:32,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:36:32,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:36:32,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:36:32,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:36:32,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:36:32,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175b237f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32, skipping insertion in model container [2021-12-14 22:36:32,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:36:32,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:36:32,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:36:32,673 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 22:36:32,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:36:32,693 INFO L208 MainTranslator]: Completed translation [2021-12-14 22:36:32,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32 WrapperNode [2021-12-14 22:36:32,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:36:32,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 22:36:32,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 22:36:32,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 22:36:32,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,718 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-12-14 22:36:32,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 22:36:32,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 22:36:32,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 22:36:32,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 22:36:32,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 22:36:32,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 22:36:32,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 22:36:32,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 22:36:32,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (1/1) ... [2021-12-14 22:36:32,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 22:36:32,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:36:32,783 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) [2021-12-14 22:36:32,801 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 [2021-12-14 22:36:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 22:36:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 22:36:32,844 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 22:36:32,845 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 22:36:32,962 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 22:36:32,969 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 22:36:32,969 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 22:36:32,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:36:32 BoogieIcfgContainer [2021-12-14 22:36:32,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 22:36:32,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 22:36:32,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 22:36:32,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 22:36:32,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:36:32" (1/3) ... [2021-12-14 22:36:32,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1849cee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:36:32, skipping insertion in model container [2021-12-14 22:36:32,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:36:32" (2/3) ... [2021-12-14 22:36:32,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1849cee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:36:32, skipping insertion in model container [2021-12-14 22:36:32,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:36:32" (3/3) ... [2021-12-14 22:36:32,977 INFO L111 eAbstractionObserver]: Analyzing ICFG Collatz_bounded.c [2021-12-14 22:36:32,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 22:36:32,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-14 22:36:33,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 22:36:33,022 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 22:36:33,022 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-14 22:36:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 states have internal predecessors, (24), 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) [2021-12-14 22:36:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-14 22:36:33,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:36:33,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-14 22:36:33,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-14 22:36:33,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:36:33,042 INFO L85 PathProgramCache]: Analyzing trace with hash 889575245, now seen corresponding path program 1 times [2021-12-14 22:36:33,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:36:33,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539698512] [2021-12-14 22:36:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:36:33,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:36:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:36:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:33,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:36:33,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539698512] [2021-12-14 22:36:33,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539698512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:36:33,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:36:33,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 22:36:33,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487962012] [2021-12-14 22:36:33,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:36:33,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 22:36:33,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:36:33,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 22:36:33,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:36:33,273 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 states have internal predecessors, (24), 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 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2021-12-14 22:36:33,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:36:33,399 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-12-14 22:36:33,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 22:36:33,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 6 [2021-12-14 22:36:33,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:36:33,413 INFO L225 Difference]: With dead ends: 42 [2021-12-14 22:36:33,414 INFO L226 Difference]: Without dead ends: 25 [2021-12-14 22:36:33,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:36:33,418 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 22:36:33,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 30 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 22:36:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-14 22:36:33,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-14 22:36:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 24 states have internal predecessors, (27), 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) [2021-12-14 22:36:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-12-14 22:36:33,449 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 6 [2021-12-14 22:36:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:36:33,450 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-12-14 22:36:33,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2021-12-14 22:36:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-12-14 22:36:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 22:36:33,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:36:33,451 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:36:33,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 22:36:33,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-14 22:36:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:36:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash -149178656, now seen corresponding path program 1 times [2021-12-14 22:36:33,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:36:33,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594511729] [2021-12-14 22:36:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:36:33,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:36:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:36:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:33,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:36:33,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594511729] [2021-12-14 22:36:33,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594511729] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 22:36:33,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178917279] [2021-12-14 22:36:33,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:36:33,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:36:33,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:36:33,573 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) [2021-12-14 22:36:33,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 22:36:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:36:33,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:36:33,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:36:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:33,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 22:36:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:33,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178917279] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 22:36:33,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 22:36:33,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2021-12-14 22:36:33,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593972077] [2021-12-14 22:36:33,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 22:36:33,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 22:36:33,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:36:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 22:36:33,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-12-14 22:36:33,817 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-12-14 22:36:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:36:33,904 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-12-14 22:36:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 22:36:33,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 12 [2021-12-14 22:36:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:36:33,905 INFO L225 Difference]: With dead ends: 45 [2021-12-14 22:36:33,905 INFO L226 Difference]: Without dead ends: 39 [2021-12-14 22:36:33,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-12-14 22:36:33,908 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 38 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 22:36:33,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 5 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 22:36:33,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-14 22:36:33,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-12-14 22:36:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 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) [2021-12-14 22:36:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-12-14 22:36:33,913 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 12 [2021-12-14 22:36:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:36:33,913 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-12-14 22:36:33,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-12-14 22:36:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-12-14 22:36:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 22:36:33,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:36:33,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-12-14 22:36:33,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 22:36:34,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:36:34,132 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-14 22:36:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:36:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash 54680819, now seen corresponding path program 1 times [2021-12-14 22:36:34,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:36:34,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140028913] [2021-12-14 22:36:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:36:34,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:36:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:36:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:34,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:36:34,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140028913] [2021-12-14 22:36:34,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140028913] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 22:36:34,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678045827] [2021-12-14 22:36:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:36:34,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:36:34,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:36:34,181 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) [2021-12-14 22:36:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:36:34,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:36:34,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:36:34,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 22:36:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:34,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 22:36:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:34,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678045827] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 22:36:34,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 22:36:34,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-14 22:36:34,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405478160] [2021-12-14 22:36:34,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 22:36:34,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 22:36:34,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:36:34,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 22:36:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-14 22:36:34,347 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-12-14 22:36:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:36:34,444 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2021-12-14 22:36:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 22:36:34,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 18 [2021-12-14 22:36:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:36:34,446 INFO L225 Difference]: With dead ends: 62 [2021-12-14 22:36:34,446 INFO L226 Difference]: Without dead ends: 60 [2021-12-14 22:36:34,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-14 22:36:34,448 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 57 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 22:36:34,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 6 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 22:36:34,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-14 22:36:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-12-14 22:36:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.375) internal successors, (77), 59 states have internal predecessors, (77), 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) [2021-12-14 22:36:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-12-14 22:36:34,454 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 18 [2021-12-14 22:36:34,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:36:34,454 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-12-14 22:36:34,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-12-14 22:36:34,455 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2021-12-14 22:36:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 22:36:34,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:36:34,455 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-14 22:36:34,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-14 22:36:34,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-14 22:36:34,669 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-14 22:36:34,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:36:34,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1695099490, now seen corresponding path program 1 times [2021-12-14 22:36:34,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:36:34,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950879180] [2021-12-14 22:36:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:36:34,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:36:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:36:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-14 22:36:34,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:36:34,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950879180] [2021-12-14 22:36:34,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950879180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:36:34,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:36:34,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 22:36:34,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374944949] [2021-12-14 22:36:34,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:36:34,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:36:34,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:36:34,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:36:34,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:36:34,716 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-14 22:36:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:36:34,729 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2021-12-14 22:36:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:36:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 19 [2021-12-14 22:36:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:36:34,730 INFO L225 Difference]: With dead ends: 66 [2021-12-14 22:36:34,730 INFO L226 Difference]: Without dead ends: 63 [2021-12-14 22:36:34,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:36:34,735 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 22:36:34,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 5 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 22:36:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-14 22:36:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-12-14 22:36:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 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) [2021-12-14 22:36:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2021-12-14 22:36:34,752 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 19 [2021-12-14 22:36:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:36:34,752 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2021-12-14 22:36:34,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-14 22:36:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2021-12-14 22:36:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-14 22:36:34,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:36:34,753 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1] [2021-12-14 22:36:34,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 22:36:34,753 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-14 22:36:34,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:36:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1243190337, now seen corresponding path program 2 times [2021-12-14 22:36:34,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:36:34,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479403152] [2021-12-14 22:36:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:36:34,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:36:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:36:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:34,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:36:34,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479403152] [2021-12-14 22:36:34,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479403152] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 22:36:34,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346704058] [2021-12-14 22:36:34,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 22:36:34,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:36:34,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:36:34,848 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) [2021-12-14 22:36:34,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 22:36:34,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 22:36:34,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 22:36:34,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 22:36:34,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:36:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:35,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 22:36:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:35,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346704058] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 22:36:35,171 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 22:36:35,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-12-14 22:36:35,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691210159] [2021-12-14 22:36:35,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 22:36:35,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 22:36:35,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:36:35,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 22:36:35,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-12-14 22:36:35,176 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 16 states have internal predecessors, (82), 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) [2021-12-14 22:36:35,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:36:35,337 INFO L93 Difference]: Finished difference Result 122 states and 140 transitions. [2021-12-14 22:36:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 22:36:35,337 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 16 states have internal predecessors, (82), 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 42 [2021-12-14 22:36:35,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:36:35,338 INFO L225 Difference]: With dead ends: 122 [2021-12-14 22:36:35,338 INFO L226 Difference]: Without dead ends: 121 [2021-12-14 22:36:35,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-12-14 22:36:35,339 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 91 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 22:36:35,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 7 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 22:36:35,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-14 22:36:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 107. [2021-12-14 22:36:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.150943396226415) internal successors, (122), 106 states have internal predecessors, (122), 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) [2021-12-14 22:36:35,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-12-14 22:36:35,356 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 42 [2021-12-14 22:36:35,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:36:35,357 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-12-14 22:36:35,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 16 states have internal predecessors, (82), 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) [2021-12-14 22:36:35,358 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-12-14 22:36:35,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 22:36:35,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:36:35,360 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1] [2021-12-14 22:36:35,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 22:36:35,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:36:35,569 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-14 22:36:35,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:36:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1207498149, now seen corresponding path program 3 times [2021-12-14 22:36:35,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:36:35,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071897264] [2021-12-14 22:36:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:36:35,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:36:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:36:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-14 22:36:35,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:36:35,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071897264] [2021-12-14 22:36:35,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071897264] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 22:36:35,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325776082] [2021-12-14 22:36:35,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 22:36:35,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:36:35,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:36:35,716 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) [2021-12-14 22:36:35,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 22:36:35,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-14 22:36:35,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 22:36:35,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 22:36:35,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:36:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-14 22:36:35,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:36:35,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325776082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:36:35,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 22:36:35,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-12-14 22:36:35,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242759434] [2021-12-14 22:36:35,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:36:35,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 22:36:35,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:36:35,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 22:36:35,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 22:36:35,853 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-12-14 22:36:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:36:35,882 INFO L93 Difference]: Finished difference Result 209 states and 241 transitions. [2021-12-14 22:36:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 22:36:35,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 54 [2021-12-14 22:36:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:36:35,885 INFO L225 Difference]: With dead ends: 209 [2021-12-14 22:36:35,885 INFO L226 Difference]: Without dead ends: 117 [2021-12-14 22:36:35,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 22:36:35,887 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 22:36:35,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 22:36:35,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-14 22:36:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 99. [2021-12-14 22:36:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.1122448979591837) internal successors, (109), 98 states have internal predecessors, (109), 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) [2021-12-14 22:36:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2021-12-14 22:36:35,906 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 54 [2021-12-14 22:36:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:36:35,907 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2021-12-14 22:36:35,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-12-14 22:36:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2021-12-14 22:36:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-14 22:36:35,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:36:35,913 INFO L514 BasicCegarLoop]: trace histogram [19, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1] [2021-12-14 22:36:35,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 22:36:36,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:36:36,128 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-14 22:36:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:36:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash -396669813, now seen corresponding path program 1 times [2021-12-14 22:36:36,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:36:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398278554] [2021-12-14 22:36:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:36:36,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:36:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:36:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 17 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:36:36,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:36:36,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398278554] [2021-12-14 22:36:36,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398278554] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 22:36:36,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739540666] [2021-12-14 22:36:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:36:36,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:36:36,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:36:36,692 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) [2021-12-14 22:36:36,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 22:36:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:36:36,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-14 22:36:36,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:36:47,150 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aux_div_v_ULTIMATE.start_main_~y~0#1_53_41| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_51_41_127| Int) (|aux_div_v_ULTIMATE.start_main_~y~0#1_49_61| Int) (|aux_div_v_ULTIMATE.start_main_~y~0#1_47_61| Int)) (and (<= (div (+ (* |aux_div_v_ULTIMATE.start_main_~y~0#1_53_41| (- 2)) 1) (- 3)) (div (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_51_41_127| 3) 1) 2)) (<= |aux_div_v_ULTIMATE.start_main_~y~0#1_47_61| 255110) (< 0 (div (+ 2 (* |aux_div_v_ULTIMATE.start_main_~y~0#1_53_41| 2)) 3)) (<= |c_ULTIMATE.start_main_~y~0#1| |aux_div_v_ULTIMATE.start_main_~y~0#1_53_41|) (<= |aux_div_v_ULTIMATE.start_main_~y~0#1_49_61| (div (+ 1 (* |aux_div_v_ULTIMATE.start_main_~y~0#1_47_61| 3)) 2)) (<= |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_51_41_127| (div (+ (* |aux_div_v_ULTIMATE.start_main_~y~0#1_49_61| 3) 1) 2)))) is different from true [2021-12-14 22:37:53,022 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aux_div_v_ULTIMATE.start_main_~y~0#1_53_41| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_51_41_127| Int) (|aux_div_v_ULTIMATE.start_main_~y~0#1_49_61| Int) (|aux_div_v_ULTIMATE.start_main_~y~0#1_55_61| Int) (|aux_div_v_ULTIMATE.start_main_~y~0#1_47_61| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_57_61_119| Int)) (and (<= (div (+ (* |aux_div_v_ULTIMATE.start_main_~y~0#1_53_41| (- 2)) 1) (- 3)) (div (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_51_41_127| 3) 1) 2)) (<= (div (+ (* |c_ULTIMATE.start_main_~y~0#1| (- 1)) 1) (- 3)) |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_57_61_119|) (<= |aux_div_v_ULTIMATE.start_main_~y~0#1_47_61| 255110) (<= |aux_div_v_ULTIMATE.start_main_~y~0#1_49_61| (div (+ 1 (* |aux_div_v_ULTIMATE.start_main_~y~0#1_47_61| 3)) 2)) (<= |aux_div_v_ULTIMATE.start_main_~y~0#1_55_61| |aux_div_v_ULTIMATE.start_main_~y~0#1_53_41|) (< 0 (div (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_57_61_119| 2) 2) 3)) (<= (div (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_57_61_119| (- 2)) 1) (- 3)) (div (+ (* |aux_div_v_ULTIMATE.start_main_~y~0#1_55_61| 3) 1) 2)) (<= |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_51_41_127| (div (+ (* |aux_div_v_ULTIMATE.start_main_~y~0#1_49_61| 3) 1) 2)))) is different from true