./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 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/nla-digbench-scaling/ps6-ll_valuebound2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbc7fc96c6d4708331280184201322c719c7fb1504d84fafd0b9583653597d2e --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:33:32,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:33:32,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:33:32,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:33:32,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:33:32,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:33:32,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:33:32,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:33:32,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:33:32,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:33:32,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:33:32,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:33:32,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:33:32,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:33:32,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:33:32,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:33:32,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:33:32,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:33:32,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:33:32,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:33:32,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:33:32,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:33:32,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:33:32,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:33:32,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:33:32,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:33:32,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:33:32,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:33:32,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:33:32,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:33:32,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:33:32,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:33:32,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:33:32,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:33:32,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:33:32,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:33:32,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:33:32,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:33:32,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:33:32,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:33:32,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:33:32,635 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 12:33:32,656 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:33:32,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:33:32,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:33:32,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:33:32,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:33:32,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:33:32,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:33:32,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:33:32,658 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:33:32,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:33:32,659 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:33:32,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 12:33:32,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:33:32,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:33:32,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 12:33:32,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:33:32,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 12:33:32,660 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:33:32,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 12:33:32,660 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:33:32,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 12:33:32,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:33:32,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:33:32,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:33:32,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:33:32,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:33:32,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:33:32,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 12:33:32,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 12:33:32,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 12:33:32,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:33:32,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 12:33:32,662 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:33:32,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:33:32,663 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:33:32,663 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbc7fc96c6d4708331280184201322c719c7fb1504d84fafd0b9583653597d2e [2023-02-15 12:33:32,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:33:32,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:33:32,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:33:32,830 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:33:32,831 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:33:32,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c [2023-02-15 12:33:33,760 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:33:33,938 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:33:33,939 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c [2023-02-15 12:33:33,943 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6344eda43/bdf488cf80894d8b8a7db7ad5a71bf4d/FLAG82f77cc33 [2023-02-15 12:33:34,345 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6344eda43/bdf488cf80894d8b8a7db7ad5a71bf4d [2023-02-15 12:33:34,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:33:34,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:33:34,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:33:34,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:33:34,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:33:34,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a4a8d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34, skipping insertion in model container [2023-02-15 12:33:34,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:33:34,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:33:34,481 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c[458,471] [2023-02-15 12:33:34,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:33:34,511 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 12:33:34,518 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c[458,471] [2023-02-15 12:33:34,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:33:34,530 INFO L208 MainTranslator]: Completed translation [2023-02-15 12:33:34,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34 WrapperNode [2023-02-15 12:33:34,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 12:33:34,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 12:33:34,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 12:33:34,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 12:33:34,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,549 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-15 12:33:34,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 12:33:34,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 12:33:34,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 12:33:34,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 12:33:34,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,560 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 12:33:34,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 12:33:34,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 12:33:34,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 12:33:34,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (1/1) ... [2023-02-15 12:33:34,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:33:34,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:33:34,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 12:33:34,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 12:33:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 12:33:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 12:33:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 12:33:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 12:33:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 12:33:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 12:33:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 12:33:34,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 12:33:34,661 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 12:33:34,663 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 12:33:34,796 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 12:33:34,799 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 12:33:34,799 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 12:33:34,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:33:34 BoogieIcfgContainer [2023-02-15 12:33:34,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 12:33:34,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 12:33:34,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 12:33:34,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 12:33:34,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:33:34" (1/3) ... [2023-02-15 12:33:34,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54811d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:33:34, skipping insertion in model container [2023-02-15 12:33:34,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:33:34" (2/3) ... [2023-02-15 12:33:34,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54811d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:33:34, skipping insertion in model container [2023-02-15 12:33:34,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:33:34" (3/3) ... [2023-02-15 12:33:34,805 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound2.c [2023-02-15 12:33:34,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 12:33:34,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 12:33:34,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 12:33:34,847 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f910fc6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 12:33:34,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 12:33:34,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 12:33:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 12:33:34,854 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:33:34,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:33:34,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:33:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:33:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1845349065, now seen corresponding path program 1 times [2023-02-15 12:33:34,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:33:34,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935819968] [2023-02-15 12:33:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:33:34,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:33:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:33:34,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:33:34,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935819968] [2023-02-15 12:33:34,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 12:33:34,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974439423] [2023-02-15 12:33:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:33:34,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:33:34,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:33:34,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:33:34,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 12:33:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:33:35,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 12:33:35,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:33:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 12:33:35,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:33:35,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974439423] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:33:35,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:33:35,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 12:33:35,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055625319] [2023-02-15 12:33:35,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:33:35,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 12:33:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:33:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 12:33:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 12:33:35,149 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 12:33:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:33:35,166 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2023-02-15 12:33:35,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 12:33:35,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-15 12:33:35,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:33:35,172 INFO L225 Difference]: With dead ends: 45 [2023-02-15 12:33:35,172 INFO L226 Difference]: Without dead ends: 20 [2023-02-15 12:33:35,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 12:33:35,176 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:33:35,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:33:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-15 12:33:35,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-15 12:33:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 12:33:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-15 12:33:35,199 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2023-02-15 12:33:35,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:33:35,199 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-15 12:33:35,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 12:33:35,200 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-15 12:33:35,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 12:33:35,201 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:33:35,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:33:35,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 12:33:35,407 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 [2023-02-15 12:33:35,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:33:35,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:33:35,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1506842435, now seen corresponding path program 1 times [2023-02-15 12:33:35,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:33:35,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593421566] [2023-02-15 12:33:35,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:33:35,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:33:35,420 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:33:35,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58251708] [2023-02-15 12:33:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:33:35,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:33:35,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:33:35,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:33:35,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 12:33:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:33:35,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 12:33:35,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:33:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 12:33:35,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:33:35,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:33:35,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593421566] [2023-02-15 12:33:35,504 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:33:35,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58251708] [2023-02-15 12:33:35,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58251708] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:33:35,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:33:35,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 12:33:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879217815] [2023-02-15 12:33:35,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:33:35,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:33:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:33:35,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:33:35,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:33:35,507 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 12:33:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:33:35,739 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-02-15 12:33:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 12:33:35,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-02-15 12:33:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:33:35,753 INFO L225 Difference]: With dead ends: 31 [2023-02-15 12:33:35,753 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 12:33:35,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 12:33:35,756 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:33:35,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 69 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:33:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 12:33:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-15 12:33:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 12:33:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-02-15 12:33:35,771 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2023-02-15 12:33:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:33:35,772 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-02-15 12:33:35,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 12:33:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-02-15 12:33:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 12:33:35,774 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:33:35,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:33:35,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 12:33:35,978 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 [2023-02-15 12:33:35,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:33:35,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:33:35,979 INFO L85 PathProgramCache]: Analyzing trace with hash 903983968, now seen corresponding path program 1 times [2023-02-15 12:33:35,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:33:35,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385795251] [2023-02-15 12:33:35,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:33:35,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:33:35,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:33:35,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553250856] [2023-02-15 12:33:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:33:35,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:33:35,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:33:35,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:33:36,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 12:33:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:33:36,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 12:33:36,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:33:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:33:36,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:33:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:33:36,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:33:36,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385795251] [2023-02-15 12:33:36,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:33:36,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553250856] [2023-02-15 12:33:36,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553250856] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 12:33:36,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 12:33:36,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-02-15 12:33:36,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555622786] [2023-02-15 12:33:36,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:33:36,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:33:36,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:33:36,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:33:36,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-02-15 12:33:36,276 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 12:33:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:33:36,316 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2023-02-15 12:33:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 12:33:36,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-15 12:33:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:33:36,318 INFO L225 Difference]: With dead ends: 33 [2023-02-15 12:33:36,319 INFO L226 Difference]: Without dead ends: 29 [2023-02-15 12:33:36,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-15 12:33:36,320 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:33:36,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:33:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-15 12:33:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-15 12:33:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 12:33:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-02-15 12:33:36,348 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2023-02-15 12:33:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:33:36,349 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-02-15 12:33:36,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 12:33:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-02-15 12:33:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 12:33:36,351 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:33:36,351 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:33:36,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 12:33:36,555 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 [2023-02-15 12:33:36,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:33:36,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:33:36,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1648043046, now seen corresponding path program 1 times [2023-02-15 12:33:36,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:33:36,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91937559] [2023-02-15 12:33:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:33:36,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:33:36,571 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:33:36,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597091258] [2023-02-15 12:33:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:33:36,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:33:36,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:33:36,583 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) [2023-02-15 12:33:36,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 12:33:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:33:36,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 12:33:36,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:33:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 12:33:36,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:33:42,864 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) .cse0) (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 7) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))))) is different from false [2023-02-15 12:34:09,547 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|))) (or (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) .cse0) (= (mod (+ (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) .cse0 (* 7 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 12) 0)))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-02-15 12:34:28,269 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|))) (or (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) .cse0) (= (mod (+ (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) .cse0 (* 7 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 12) 0)))) (not (= |c___VERIFIER_assert_#in~cond| 0)) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-02-15 12:34:52,374 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 7) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))))) is different from false [2023-02-15 12:34:54,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:34:54,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91937559] [2023-02-15 12:34:54,393 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:34:54,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597091258] [2023-02-15 12:34:54,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597091258] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:34:54,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 12:34:54,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-02-15 12:34:54,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631686108] [2023-02-15 12:34:54,394 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 12:34:54,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 12:34:54,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:34:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 12:34:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=103, Unknown=8, NotChecked=92, Total=240 [2023-02-15 12:34:54,395 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-15 12:34:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:34:54,482 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-02-15 12:34:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 12:34:54,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2023-02-15 12:34:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:34:54,486 INFO L225 Difference]: With dead ends: 38 [2023-02-15 12:34:54,486 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 12:34:54,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=56, Invalid=162, Unknown=8, NotChecked=116, Total=342 [2023-02-15 12:34:54,487 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:34:54,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 92 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:34:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 12:34:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-15 12:34:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 12:34:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-02-15 12:34:54,492 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 36 [2023-02-15 12:34:54,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:34:54,492 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-02-15 12:34:54,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-15 12:34:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-02-15 12:34:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 12:34:54,497 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:34:54,497 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:34:54,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 12:34:54,697 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 [2023-02-15 12:34:54,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:34:54,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:34:54,699 INFO L85 PathProgramCache]: Analyzing trace with hash -426505545, now seen corresponding path program 2 times [2023-02-15 12:34:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:34:54,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012965390] [2023-02-15 12:34:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:34:54,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:34:54,707 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:34:54,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441875139] [2023-02-15 12:34:54,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:34:54,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:34:54,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:34:54,726 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) [2023-02-15 12:34:54,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 12:34:54,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:34:54,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:34:54,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 12:34:54,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:34:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-15 12:34:54,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:35:01,142 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 7) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))))) is different from false [2023-02-15 12:35:01,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:35:01,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012965390] [2023-02-15 12:35:01,144 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:35:01,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441875139] [2023-02-15 12:35:01,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441875139] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:35:01,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 12:35:01,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-02-15 12:35:01,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146313741] [2023-02-15 12:35:01,145 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 12:35:01,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 12:35:01,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:35:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 12:35:01,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=148, Unknown=1, NotChecked=24, Total=210 [2023-02-15 12:35:01,146 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-15 12:35:01,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:35:01,282 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2023-02-15 12:35:01,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 12:35:01,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2023-02-15 12:35:01,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:35:01,284 INFO L225 Difference]: With dead ends: 41 [2023-02-15 12:35:01,284 INFO L226 Difference]: Without dead ends: 35 [2023-02-15 12:35:01,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=56, Invalid=219, Unknown=1, NotChecked=30, Total=306 [2023-02-15 12:35:01,285 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:35:01,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 127 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:35:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-15 12:35:01,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-02-15 12:35:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 12:35:01,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-02-15 12:35:01,299 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 43 [2023-02-15 12:35:01,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:35:01,300 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-02-15 12:35:01,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-15 12:35:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-02-15 12:35:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 12:35:01,304 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:35:01,304 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:35:01,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 12:35:01,510 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 [2023-02-15 12:35:01,510 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:35:01,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:35:01,514 INFO L85 PathProgramCache]: Analyzing trace with hash 173594938, now seen corresponding path program 3 times [2023-02-15 12:35:01,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:35:01,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556807594] [2023-02-15 12:35:01,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:35:01,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:35:01,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:35:01,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709471843] [2023-02-15 12:35:01,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:35:01,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:35:01,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:35:01,538 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) [2023-02-15 12:35:01,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 12:35:01,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 12:35:01,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:35:01,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 12:35:01,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:35:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-15 12:35:01,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:35:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-02-15 12:35:01,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:35:01,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556807594] [2023-02-15 12:35:01,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:35:01,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709471843] [2023-02-15 12:35:01,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709471843] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:35:01,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:35:01,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-02-15 12:35:01,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063035452] [2023-02-15 12:35:01,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:35:01,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 12:35:01,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:35:01,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 12:35:01,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-02-15 12:35:01,911 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 10 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2023-02-15 12:35:01,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:35:01,952 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2023-02-15 12:35:01,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 12:35:01,952 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 10 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) Word has length 50 [2023-02-15 12:35:01,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:35:01,953 INFO L225 Difference]: With dead ends: 41 [2023-02-15 12:35:01,953 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 12:35:01,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-02-15 12:35:01,954 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:35:01,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 63 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:35:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 12:35:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 12:35:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:35:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 12:35:01,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2023-02-15 12:35:01,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:35:01,955 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 12:35:01,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 10 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2023-02-15 12:35:01,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 12:35:01,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 12:35:01,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 12:35:01,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 12:35:02,188 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 [2023-02-15 12:35:02,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 12:35:02,456 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 12:35:02,456 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse1 (= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse0 (<= |ULTIMATE.start_main_~k~0#1| 2))) (or (and (<= 2 |ULTIMATE.start_main_~c~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) .cse1) (and .cse0 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~y~0#1| 1) .cse1 (< 0 |ULTIMATE.start_main_~k~0#1|)) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)))) [2023-02-15 12:35:02,456 INFO L899 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2023-02-15 12:35:02,456 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2023-02-15 12:35:02,456 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2)) [2023-02-15 12:35:02,456 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 12:35:02,456 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 17 42) the Hoare annotation is: true [2023-02-15 12:35:02,456 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2023-02-15 12:35:02,456 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 12:35:02,457 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 12:35:02,457 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse1 (= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse0 (<= |ULTIMATE.start_main_~k~0#1| 2))) (or (and (<= 2 |ULTIMATE.start_main_~c~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) .cse1) (and .cse0 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~y~0#1| 1) .cse1 (< 0 |ULTIMATE.start_main_~k~0#1|)) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)))) [2023-02-15 12:35:02,457 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (let ((.cse0 (= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))))) (or (and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse0 (< 0 |ULTIMATE.start_main_~k~0#1|)) (and (<= |ULTIMATE.start_main_~k~0#1| 2) (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) .cse0) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)))) [2023-02-15 12:35:02,457 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-02-15 12:35:02,457 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))))) (or (and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse0 (< 0 |ULTIMATE.start_main_~k~0#1|)) (and (<= |ULTIMATE.start_main_~k~0#1| 2) (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) .cse0) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)))) [2023-02-15 12:35:02,457 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 8) the Hoare annotation is: true [2023-02-15 12:35:02,457 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-02-15 12:35:02,457 INFO L899 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2023-02-15 12:35:02,457 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-02-15 12:35:02,457 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-02-15 12:35:02,457 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-02-15 12:35:02,457 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-02-15 12:35:02,457 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-02-15 12:35:02,457 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-02-15 12:35:02,457 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-02-15 12:35:02,459 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-02-15 12:35:02,464 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 12:35:02,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:35:02 BoogieIcfgContainer [2023-02-15 12:35:02,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 12:35:02,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 12:35:02,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 12:35:02,494 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 12:35:02,494 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:33:34" (3/4) ... [2023-02-15 12:35:02,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 12:35:02,499 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-15 12:35:02,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 12:35:02,515 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-15 12:35:02,515 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 12:35:02,515 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 12:35:02,516 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 12:35:02,566 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 12:35:02,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 12:35:02,567 INFO L158 Benchmark]: Toolchain (without parser) took 88219.68ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 80.0MB in the beginning and 48.7MB in the end (delta: 31.3MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2023-02-15 12:35:02,567 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 92.3MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:35:02,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.27ms. Allocated memory is still 111.1MB. Free memory was 80.0MB in the beginning and 69.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:35:02,568 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.96ms. Allocated memory is still 111.1MB. Free memory was 69.1MB in the beginning and 67.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 12:35:02,568 INFO L158 Benchmark]: Boogie Preprocessor took 11.63ms. Allocated memory is still 111.1MB. Free memory was 67.7MB in the beginning and 66.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 12:35:02,569 INFO L158 Benchmark]: RCFGBuilder took 239.02ms. Allocated memory is still 111.1MB. Free memory was 66.6MB in the beginning and 56.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:35:02,569 INFO L158 Benchmark]: TraceAbstraction took 87691.73ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 55.6MB in the beginning and 51.9MB in the end (delta: 3.7MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2023-02-15 12:35:02,569 INFO L158 Benchmark]: Witness Printer took 73.11ms. Allocated memory is still 148.9MB. Free memory was 51.9MB in the beginning and 48.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 12:35:02,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 92.3MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.27ms. Allocated memory is still 111.1MB. Free memory was 80.0MB in the beginning and 69.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.96ms. Allocated memory is still 111.1MB. Free memory was 69.1MB in the beginning and 67.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.63ms. Allocated memory is still 111.1MB. Free memory was 67.7MB in the beginning and 66.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 239.02ms. Allocated memory is still 111.1MB. Free memory was 66.6MB in the beginning and 56.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 87691.73ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 55.6MB in the beginning and 51.9MB in the end (delta: 3.7MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. * Witness Printer took 73.11ms. Allocated memory is still 148.9MB. Free memory was 51.9MB in the beginning and 48.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 87.6s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 436 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 312 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 353 IncrementalHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 124 mSDtfsCounter, 353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 302 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 24.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=5, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 25 PreInvPairs, 39 NumberOfFragments, 441 HoareAnnotationTreeSize, 25 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 84.7s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 810 SizeOfPredicates, 19 NumberOfNonLiveVariables, 542 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 210/238 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((2 <= c && k <= 2) && 2 == y) && 1 < k) && c <= 2) && 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y) == x * 12 + y * y) || (((((k <= 2 && c <= 1) && 1 <= c) && y == 1) && 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y) == x * 12 + y * y) && 0 < k)) || ((((0 <= k && c == 0) && k <= 2) && y == 0) && x == 0) RESULT: Ultimate proved your program to be correct! [2023-02-15 12:35:02,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE