./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/prod4br-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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/prod4br-ll.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 9fc373a278835802938e4c08f2544f1651ce1de6dc177c0a58501e43687c477d --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 00:16:07,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 00:16:07,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 00:16:07,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 00:16:07,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 00:16:07,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 00:16:07,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 00:16:07,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 00:16:07,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 00:16:07,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 00:16:07,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 00:16:07,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 00:16:07,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 00:16:07,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 00:16:07,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 00:16:07,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 00:16:07,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 00:16:07,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 00:16:07,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 00:16:07,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 00:16:07,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 00:16:07,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 00:16:07,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 00:16:07,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 00:16:07,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 00:16:07,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 00:16:07,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 00:16:07,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 00:16:07,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 00:16:07,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 00:16:07,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 00:16:07,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 00:16:07,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 00:16:07,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 00:16:07,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 00:16:07,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 00:16:07,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 00:16:07,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 00:16:07,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 00:16:07,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 00:16:07,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 00:16:07,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 00:16:07,714 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 00:16:07,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 00:16:07,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 00:16:07,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 00:16:07,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 00:16:07,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 00:16:07,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 00:16:07,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 00:16:07,717 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 00:16:07,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 00:16:07,718 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 00:16:07,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 00:16:07,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 00:16:07,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 00:16:07,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 00:16:07,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 00:16:07,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 00:16:07,719 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 00:16:07,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 00:16:07,719 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 00:16:07,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 00:16:07,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 00:16:07,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 00:16:07,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 00:16:07,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 00:16:07,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 00:16:07,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 00:16:07,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 00:16:07,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 00:16:07,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 00:16:07,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 00:16:07,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 00:16:07,721 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 00:16:07,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 00:16:07,721 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 00:16:07,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fc373a278835802938e4c08f2544f1651ce1de6dc177c0a58501e43687c477d [2023-02-14 00:16:07,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 00:16:07,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 00:16:07,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 00:16:07,949 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 00:16:07,950 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 00:16:07,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/prod4br-ll.c [2023-02-14 00:16:09,000 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 00:16:09,161 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 00:16:09,161 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/prod4br-ll.c [2023-02-14 00:16:09,168 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bafb523/cef92ff3239c47a5b0eb2fb9eb0a4141/FLAG3665a36ae [2023-02-14 00:16:09,177 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bafb523/cef92ff3239c47a5b0eb2fb9eb0a4141 [2023-02-14 00:16:09,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 00:16:09,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 00:16:09,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 00:16:09,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 00:16:09,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 00:16:09,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a02266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09, skipping insertion in model container [2023-02-14 00:16:09,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 00:16:09,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 00:16:09,330 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/prod4br-ll.c[524,537] [2023-02-14 00:16:09,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 00:16:09,348 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 00:16:09,358 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/prod4br-ll.c[524,537] [2023-02-14 00:16:09,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 00:16:09,371 INFO L208 MainTranslator]: Completed translation [2023-02-14 00:16:09,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09 WrapperNode [2023-02-14 00:16:09,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 00:16:09,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 00:16:09,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 00:16:09,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 00:16:09,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,414 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2023-02-14 00:16:09,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 00:16:09,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 00:16:09,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 00:16:09,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 00:16:09,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,435 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 00:16:09,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 00:16:09,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 00:16:09,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 00:16:09,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (1/1) ... [2023-02-14 00:16:09,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 00:16:09,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:16:09,477 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) [2023-02-14 00:16:09,490 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 [2023-02-14 00:16:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 00:16:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 00:16:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 00:16:09,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 00:16:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-14 00:16:09,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-14 00:16:09,565 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 00:16:09,566 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 00:16:09,680 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 00:16:09,684 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 00:16:09,686 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 00:16:09,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:16:09 BoogieIcfgContainer [2023-02-14 00:16:09,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 00:16:09,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 00:16:09,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 00:16:09,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 00:16:09,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 12:16:09" (1/3) ... [2023-02-14 00:16:09,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a392f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 12:16:09, skipping insertion in model container [2023-02-14 00:16:09,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:16:09" (2/3) ... [2023-02-14 00:16:09,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a392f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 12:16:09, skipping insertion in model container [2023-02-14 00:16:09,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:16:09" (3/3) ... [2023-02-14 00:16:09,696 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll.c [2023-02-14 00:16:09,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 00:16:09,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 00:16:09,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 00:16:09,747 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;@57d79311, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 00:16:09,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 00:16:09,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 00:16:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 00:16:09,755 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:16:09,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:16:09,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:16:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:16:09,759 INFO L85 PathProgramCache]: Analyzing trace with hash -588943746, now seen corresponding path program 1 times [2023-02-14 00:16:09,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:16:09,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824571747] [2023-02-14 00:16:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:16:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:16:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:16:09,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:16:09,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824571747] [2023-02-14 00:16:09,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-14 00:16:09,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942333031] [2023-02-14 00:16:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:16:09,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:16:09,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:16:09,850 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) [2023-02-14 00:16:09,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 00:16:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:16:09,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-14 00:16:09,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:16:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:16:09,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 00:16:09,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942333031] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 00:16:09,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 00:16:09,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 00:16:09,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099382909] [2023-02-14 00:16:09,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:16:09,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 00:16:09,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:16:09,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 00:16:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 00:16:09,953 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:16:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:16:09,967 INFO L93 Difference]: Finished difference Result 41 states and 61 transitions. [2023-02-14 00:16:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 00:16:09,968 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-14 00:16:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:16:09,973 INFO L225 Difference]: With dead ends: 41 [2023-02-14 00:16:09,973 INFO L226 Difference]: Without dead ends: 18 [2023-02-14 00:16:09,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 00:16:09,978 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 [2023-02-14 00:16:09,978 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] [2023-02-14 00:16:09,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-14 00:16:09,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-14 00:16:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 00:16:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2023-02-14 00:16:10,001 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2023-02-14 00:16:10,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:16:10,002 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2023-02-14 00:16:10,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:16:10,002 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2023-02-14 00:16:10,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 00:16:10,002 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:16:10,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:16:10,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 00:16:10,207 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 [2023-02-14 00:16:10,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:16:10,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:16:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1187851076, now seen corresponding path program 1 times [2023-02-14 00:16:10,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:16:10,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123807872] [2023-02-14 00:16:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:16:10,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:16:10,234 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 00:16:10,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145608634] [2023-02-14 00:16:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:16:10,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:16:10,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:16:10,236 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) [2023-02-14 00:16:10,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 00:16:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:16:10,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-14 00:16:10,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:16:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:16:10,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 00:16:10,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:16:10,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123807872] [2023-02-14 00:16:10,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 00:16:10,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145608634] [2023-02-14 00:16:10,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145608634] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 00:16:10,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 00:16:10,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-14 00:16:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131202535] [2023-02-14 00:16:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:16:10,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 00:16:10,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:16:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 00:16:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-14 00:16:10,470 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:16:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:16:10,601 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-02-14 00:16:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 00:16:10,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-14 00:16:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:16:10,603 INFO L225 Difference]: With dead ends: 32 [2023-02-14 00:16:10,603 INFO L226 Difference]: Without dead ends: 30 [2023-02-14 00:16:10,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-14 00:16:10,604 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 00:16:10,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 39 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 00:16:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-14 00:16:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2023-02-14 00:16:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 00:16:10,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-02-14 00:16:10,611 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 9 [2023-02-14 00:16:10,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:16:10,611 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-02-14 00:16:10,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:16:10,612 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-02-14 00:16:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 00:16:10,612 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:16:10,612 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:16:10,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 00:16:10,817 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 [2023-02-14 00:16:10,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:16:10,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:16:10,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1831703089, now seen corresponding path program 1 times [2023-02-14 00:16:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:16:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62169959] [2023-02-14 00:16:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:16:10,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:16:10,827 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 00:16:10,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528461557] [2023-02-14 00:16:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:16:10,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:16:10,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:16:10,829 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) [2023-02-14 00:16:10,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 00:16:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:16:10,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 00:16:10,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:16:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:16:11,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 00:16:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:16:11,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:16:11,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62169959] [2023-02-14 00:16:11,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 00:16:11,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528461557] [2023-02-14 00:16:11,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528461557] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 00:16:11,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 00:16:11,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2023-02-14 00:16:11,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986903403] [2023-02-14 00:16:11,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 00:16:11,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-14 00:16:11,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:16:11,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-14 00:16:11,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-02-14 00:16:11,185 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 00:16:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:16:11,461 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2023-02-14 00:16:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 00:16:11,461 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2023-02-14 00:16:11,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:16:11,464 INFO L225 Difference]: With dead ends: 40 [2023-02-14 00:16:11,465 INFO L226 Difference]: Without dead ends: 38 [2023-02-14 00:16:11,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-02-14 00:16:11,467 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 65 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 00:16:11,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 47 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 00:16:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-14 00:16:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2023-02-14 00:16:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 00:16:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-02-14 00:16:11,482 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2023-02-14 00:16:11,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:16:11,483 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-02-14 00:16:11,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 00:16:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-02-14 00:16:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 00:16:11,484 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:16:11,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:16:11,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 00:16:11,691 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 [2023-02-14 00:16:11,691 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:16:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:16:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash 45117644, now seen corresponding path program 1 times [2023-02-14 00:16:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:16:11,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123009373] [2023-02-14 00:16:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:16:11,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:16:11,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 00:16:11,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962684482] [2023-02-14 00:16:11,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:16:11,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:16:11,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:16:11,702 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) [2023-02-14 00:16:11,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 00:16:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:16:11,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-14 00:16:11,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:16:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:16:11,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 00:16:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:16:12,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:16:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123009373] [2023-02-14 00:16:12,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 00:16:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962684482] [2023-02-14 00:16:12,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962684482] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 00:16:12,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 00:16:12,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2023-02-14 00:16:12,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261783157] [2023-02-14 00:16:12,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 00:16:12,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-14 00:16:12,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:16:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-14 00:16:12,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-02-14 00:16:12,854 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 00:16:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:16:15,359 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2023-02-14 00:16:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 00:16:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-02-14 00:16:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:16:15,360 INFO L225 Difference]: With dead ends: 54 [2023-02-14 00:16:15,360 INFO L226 Difference]: Without dead ends: 50 [2023-02-14 00:16:15,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2023-02-14 00:16:15,372 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 125 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-14 00:16:15,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 66 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-14 00:16:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-14 00:16:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 24. [2023-02-14 00:16:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 00:16:15,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-14 00:16:15,379 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2023-02-14 00:16:15,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:16:15,380 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-14 00:16:15,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 00:16:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-14 00:16:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 00:16:15,380 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:16:15,381 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:16:15,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-14 00:16:15,585 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 [2023-02-14 00:16:15,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:16:15,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:16:15,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1388754562, now seen corresponding path program 1 times [2023-02-14 00:16:15,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:16:15,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436472215] [2023-02-14 00:16:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:16:15,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:16:15,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 00:16:15,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160586730] [2023-02-14 00:16:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:16:15,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:16:15,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:16:15,594 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) [2023-02-14 00:16:15,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 00:16:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:16:15,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 00:16:15,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:16:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 00:16:15,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 00:16:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 00:16:15,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:16:15,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436472215] [2023-02-14 00:16:15,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 00:16:15,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160586730] [2023-02-14 00:16:15,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160586730] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-14 00:16:15,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 00:16:15,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-02-14 00:16:15,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908880657] [2023-02-14 00:16:15,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:16:15,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 00:16:15,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:16:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 00:16:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-14 00:16:15,730 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 00:16:15,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:16:15,855 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2023-02-14 00:16:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 00:16:15,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-02-14 00:16:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:16:15,855 INFO L225 Difference]: With dead ends: 24 [2023-02-14 00:16:15,856 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 00:16:15,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-14 00:16:15,856 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 00:16:15,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 63 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 00:16:15,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 00:16:15,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 00:16:15,857 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) [2023-02-14 00:16:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 00:16:15,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2023-02-14 00:16:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:16:15,857 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 00:16:15,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 00:16:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 00:16:15,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 00:16:15,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 00:16:15,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 00:16:16,060 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 [2023-02-14 00:16:16,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 00:16:16,297 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L33-1(lines 32 53) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 52) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 19 58) the Hoare annotation is: true [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 52) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 53) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 0)) [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 0)) [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 52) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L895 garLoopResultBuilder]: At program point L45-2(lines 32 53) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-02-14 00:16:16,298 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-02-14 00:16:16,299 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-02-14 00:16:16,301 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-02-14 00:16:16,302 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 00:16:16,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 12:16:16 BoogieIcfgContainer [2023-02-14 00:16:16,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 00:16:16,313 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 00:16:16,313 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 00:16:16,313 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 00:16:16,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:16:09" (3/4) ... [2023-02-14 00:16:16,315 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 00:16:16,320 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-14 00:16:16,323 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-14 00:16:16,323 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 00:16:16,324 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 00:16:16,324 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 00:16:16,344 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 00:16:16,345 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 00:16:16,345 INFO L158 Benchmark]: Toolchain (without parser) took 7165.53ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 98.5MB in the beginning and 125.0MB in the end (delta: -26.5MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2023-02-14 00:16:16,345 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 00:16:16,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.71ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 88.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 00:16:16,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.58ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 86.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 00:16:16,346 INFO L158 Benchmark]: Boogie Preprocessor took 23.36ms. Allocated memory is still 142.6MB. Free memory was 86.4MB in the beginning and 85.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 00:16:16,346 INFO L158 Benchmark]: RCFGBuilder took 251.47ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 73.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-14 00:16:16,347 INFO L158 Benchmark]: TraceAbstraction took 6620.62ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 72.8MB in the beginning and 127.1MB in the end (delta: -54.3MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2023-02-14 00:16:16,347 INFO L158 Benchmark]: Witness Printer took 32.23ms. Allocated memory is still 172.0MB. Free memory was 127.1MB in the beginning and 125.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 00:16:16,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.71ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 88.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.58ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 86.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.36ms. Allocated memory is still 142.6MB. Free memory was 86.4MB in the beginning and 85.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 251.47ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 73.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6620.62ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 72.8MB in the beginning and 127.1MB in the end (delta: -54.3MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. * Witness Printer took 32.23ms. Allocated memory is still 172.0MB. Free memory was 127.1MB in the beginning and 125.0MB in the end (delta: 2.1MB). 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: 14]: 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 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 238 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 238 mSDsluCounter, 242 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 160 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 557 IncrementalHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 82 mSDtfsCounter, 557 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 70 HoareAnnotationTreeSize, 11 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 1198 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 114 ConstructedInterpolants, 1 QuantifiedInterpolants, 760 SizeOfPredicates, 28 NumberOfNonLiveVariables, 311 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 16/28 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (cond == 1 && 1 <= y) && q + a * b * p == x * y RESULT: Ultimate proved your program to be correct! [2023-02-14 00:16:16,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE