./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/egcd-ll_valuebound1.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 008f13fd1550f54b25db8c20ee30759d3819e45d65744da9f4f77718b68e7e66 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 01:55:21,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 01:55:21,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 01:55:21,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 01:55:21,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 01:55:21,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 01:55:21,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 01:55:21,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 01:55:21,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 01:55:21,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 01:55:21,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 01:55:21,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 01:55:21,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 01:55:21,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 01:55:21,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 01:55:21,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 01:55:21,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 01:55:21,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 01:55:21,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 01:55:21,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 01:55:21,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 01:55:21,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 01:55:21,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 01:55:21,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 01:55:21,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 01:55:21,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 01:55:21,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 01:55:21,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 01:55:21,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 01:55:21,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 01:55:21,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 01:55:21,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 01:55:21,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 01:55:21,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 01:55:21,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 01:55:21,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 01:55:21,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 01:55:21,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 01:55:21,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 01:55:21,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 01:55:21,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 01:55:21,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 01:55:21,886 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 01:55:21,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 01:55:21,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 01:55:21,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 01:55:21,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 01:55:21,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 01:55:21,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 01:55:21,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 01:55:21,896 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 01:55:21,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 01:55:21,897 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 01:55:21,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 01:55:21,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 01:55:21,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 01:55:21,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 01:55:21,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 01:55:21,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 01:55:21,898 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 01:55:21,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 01:55:21,898 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 01:55:21,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 01:55:21,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 01:55:21,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 01:55:21,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 01:55:21,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 01:55:21,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 01:55:21,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 01:55:21,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 01:55:21,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 01:55:21,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 01:55:21,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 01:55:21,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 01:55:21,901 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 01:55:21,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 01:55:21,901 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 01:55:21,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 008f13fd1550f54b25db8c20ee30759d3819e45d65744da9f4f77718b68e7e66 [2023-02-18 01:55:22,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 01:55:22,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 01:55:22,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 01:55:22,083 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 01:55:22,084 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 01:55:22,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2023-02-18 01:55:23,061 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 01:55:23,231 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 01:55:23,231 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2023-02-18 01:55:23,236 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df657a536/b8573cc3ba4849fc8d2dad9b3973acd5/FLAGa6728a709 [2023-02-18 01:55:23,247 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df657a536/b8573cc3ba4849fc8d2dad9b3973acd5 [2023-02-18 01:55:23,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 01:55:23,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 01:55:23,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 01:55:23,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 01:55:23,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 01:55:23,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2e4355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23, skipping insertion in model container [2023-02-18 01:55:23,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 01:55:23,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 01:55:23,359 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/egcd-ll_valuebound1.c[489,502] [2023-02-18 01:55:23,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 01:55:23,379 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 01:55:23,387 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/egcd-ll_valuebound1.c[489,502] [2023-02-18 01:55:23,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 01:55:23,404 INFO L208 MainTranslator]: Completed translation [2023-02-18 01:55:23,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23 WrapperNode [2023-02-18 01:55:23,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 01:55:23,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 01:55:23,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 01:55:23,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 01:55:23,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,427 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2023-02-18 01:55:23,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 01:55:23,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 01:55:23,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 01:55:23,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 01:55:23,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,440 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 01:55:23,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 01:55:23,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 01:55:23,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 01:55:23,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (1/1) ... [2023-02-18 01:55:23,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 01:55:23,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:55:23,464 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) [2023-02-18 01:55:23,466 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 [2023-02-18 01:55:23,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 01:55:23,492 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 01:55:23,492 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 01:55:23,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 01:55:23,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 01:55:23,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 01:55:23,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 01:55:23,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 01:55:23,538 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 01:55:23,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 01:55:23,695 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 01:55:23,700 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 01:55:23,700 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 01:55:23,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:55:23 BoogieIcfgContainer [2023-02-18 01:55:23,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 01:55:23,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 01:55:23,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 01:55:23,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 01:55:23,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:55:23" (1/3) ... [2023-02-18 01:55:23,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f69cdeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:55:23, skipping insertion in model container [2023-02-18 01:55:23,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:55:23" (2/3) ... [2023-02-18 01:55:23,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f69cdeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:55:23, skipping insertion in model container [2023-02-18 01:55:23,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:55:23" (3/3) ... [2023-02-18 01:55:23,720 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound1.c [2023-02-18 01:55:23,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 01:55:23,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 01:55:23,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 01:55:23,805 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;@26e784a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 01:55:23,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 01:55:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-18 01:55:23,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 01:55:23,815 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:55:23,816 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:55:23,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:55:23,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:55:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2023-02-18 01:55:23,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:55:23,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884396181] [2023-02-18 01:55:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:23,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:55:23,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:55:23,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842162072] [2023-02-18 01:55:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:23,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:55:23,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:55:23,908 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) [2023-02-18 01:55:23,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 01:55:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:55:23,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 01:55:23,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:55:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 01:55:24,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:55:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 01:55:24,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:55:24,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884396181] [2023-02-18 01:55:24,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:55:24,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842162072] [2023-02-18 01:55:24,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842162072] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 01:55:24,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:55:24,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-02-18 01:55:24,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316809388] [2023-02-18 01:55:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:55:24,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 01:55:24,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:55:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 01:55:24,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-18 01:55:24,189 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 01:55:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:55:24,296 INFO L93 Difference]: Finished difference Result 79 states and 134 transitions. [2023-02-18 01:55:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 01:55:24,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-02-18 01:55:24,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:55:24,303 INFO L225 Difference]: With dead ends: 79 [2023-02-18 01:55:24,303 INFO L226 Difference]: Without dead ends: 42 [2023-02-18 01:55:24,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-02-18 01:55:24,308 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:55:24,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 145 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:55:24,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-18 01:55:24,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-02-18 01:55:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-18 01:55:24,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2023-02-18 01:55:24,354 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2023-02-18 01:55:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:55:24,355 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2023-02-18 01:55:24,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 01:55:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2023-02-18 01:55:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-18 01:55:24,356 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:55:24,356 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:55:24,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 01:55:24,565 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 [2023-02-18 01:55:24,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:55:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:55:24,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2023-02-18 01:55:24,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:55:24,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844385501] [2023-02-18 01:55:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:24,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:55:24,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:55:24,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232169764] [2023-02-18 01:55:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:24,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:55:24,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:55:24,591 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) [2023-02-18 01:55:24,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 01:55:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:55:24,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-18 01:55:24,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:55:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 01:55:24,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:55:24,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:55:24,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844385501] [2023-02-18 01:55:24,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:55:24,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232169764] [2023-02-18 01:55:24,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232169764] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 01:55:24,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:55:24,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-02-18 01:55:24,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746660801] [2023-02-18 01:55:24,856 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 01:55:24,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 01:55:24,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:55:24,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 01:55:24,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-18 01:55:24,858 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-18 01:55:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:55:25,032 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2023-02-18 01:55:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 01:55:25,033 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 34 [2023-02-18 01:55:25,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:55:25,039 INFO L225 Difference]: With dead ends: 66 [2023-02-18 01:55:25,039 INFO L226 Difference]: Without dead ends: 64 [2023-02-18 01:55:25,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-02-18 01:55:25,043 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:55:25,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 88 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:55:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-18 01:55:25,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2023-02-18 01:55:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-18 01:55:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2023-02-18 01:55:25,071 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2023-02-18 01:55:25,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:55:25,072 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2023-02-18 01:55:25,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-18 01:55:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2023-02-18 01:55:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 01:55:25,074 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:55:25,074 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:55:25,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 01:55:25,280 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 [2023-02-18 01:55:25,281 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:55:25,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:55:25,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2023-02-18 01:55:25,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:55:25,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048700797] [2023-02-18 01:55:25,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:25,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:55:25,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:55:25,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229503579] [2023-02-18 01:55:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:25,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:55:25,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:55:25,294 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) [2023-02-18 01:55:25,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 01:55:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:55:25,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-18 01:55:25,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:55:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 01:55:25,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:55:25,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:55:25,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048700797] [2023-02-18 01:55:25,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:55:25,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229503579] [2023-02-18 01:55:25,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229503579] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:55:25,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:55:25,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-18 01:55:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731059460] [2023-02-18 01:55:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:55:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 01:55:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:55:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 01:55:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-02-18 01:55:25,418 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 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) [2023-02-18 01:55:25,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:55:25,521 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2023-02-18 01:55:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 01:55:25,522 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 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 39 [2023-02-18 01:55:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:55:25,524 INFO L225 Difference]: With dead ends: 64 [2023-02-18 01:55:25,524 INFO L226 Difference]: Without dead ends: 60 [2023-02-18 01:55:25,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-02-18 01:55:25,527 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:55:25,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 140 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:55:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-18 01:55:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-18 01:55:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-18 01:55:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2023-02-18 01:55:25,545 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2023-02-18 01:55:25,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:55:25,547 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2023-02-18 01:55:25,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 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) [2023-02-18 01:55:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2023-02-18 01:55:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-18 01:55:25,550 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:55:25,550 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:55:25,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 01:55:25,755 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 [2023-02-18 01:55:25,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:55:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:55:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2023-02-18 01:55:25,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:55:25,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189778065] [2023-02-18 01:55:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:25,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:55:25,786 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:55:25,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394070037] [2023-02-18 01:55:25,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:25,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:55:25,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:55:25,795 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) [2023-02-18 01:55:25,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 01:55:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:55:25,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 01:55:25,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:55:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-18 01:55:25,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:55:25,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:55:25,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189778065] [2023-02-18 01:55:25,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:55:25,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394070037] [2023-02-18 01:55:25,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394070037] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:55:25,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:55:25,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 01:55:25,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976188104] [2023-02-18 01:55:25,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:55:25,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 01:55:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:55:25,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 01:55:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 01:55:25,856 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-18 01:55:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:55:25,886 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2023-02-18 01:55:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 01:55:25,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2023-02-18 01:55:25,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:55:25,891 INFO L225 Difference]: With dead ends: 66 [2023-02-18 01:55:25,891 INFO L226 Difference]: Without dead ends: 64 [2023-02-18 01:55:25,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 01:55:25,894 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:55:25,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:55:25,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-18 01:55:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-02-18 01:55:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-18 01:55:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2023-02-18 01:55:25,920 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2023-02-18 01:55:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:55:25,922 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2023-02-18 01:55:25,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-18 01:55:25,922 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2023-02-18 01:55:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 01:55:25,923 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:55:25,923 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:55:25,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 01:55:26,124 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 [2023-02-18 01:55:26,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:55:26,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:55:26,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1265228631, now seen corresponding path program 1 times [2023-02-18 01:55:26,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:55:26,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508049877] [2023-02-18 01:55:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:26,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:55:26,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:55:26,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950739653] [2023-02-18 01:55:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:26,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:55:26,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:55:26,136 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) [2023-02-18 01:55:26,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 01:55:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:55:26,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 01:55:26,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:55:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 01:55:26,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:55:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 01:55:26,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:55:26,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508049877] [2023-02-18 01:55:26,294 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:55:26,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950739653] [2023-02-18 01:55:26,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950739653] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:55:26,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:55:26,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-02-18 01:55:26,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996552301] [2023-02-18 01:55:26,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:55:26,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 01:55:26,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:55:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 01:55:26,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-18 01:55:26,296 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 8 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-02-18 01:55:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:55:26,378 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2023-02-18 01:55:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 01:55:26,386 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 8 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 47 [2023-02-18 01:55:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:55:26,387 INFO L225 Difference]: With dead ends: 78 [2023-02-18 01:55:26,387 INFO L226 Difference]: Without dead ends: 48 [2023-02-18 01:55:26,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-02-18 01:55:26,388 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:55:26,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 126 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:55:26,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-18 01:55:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2023-02-18 01:55:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 29 states have internal predecessors, (29), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 01:55:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2023-02-18 01:55:26,403 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 47 [2023-02-18 01:55:26,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:55:26,404 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2023-02-18 01:55:26,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 8 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-02-18 01:55:26,404 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2023-02-18 01:55:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-18 01:55:26,408 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:55:26,409 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:55:26,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-18 01:55:26,613 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 [2023-02-18 01:55:26,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:55:26,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:55:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2023-02-18 01:55:26,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:55:26,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485361185] [2023-02-18 01:55:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:26,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:55:26,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:55:26,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816344055] [2023-02-18 01:55:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:26,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:55:26,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:55:26,625 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) [2023-02-18 01:55:26,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 01:55:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:55:26,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 01:55:26,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:55:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-18 01:55:26,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:55:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-18 01:55:26,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:55:26,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485361185] [2023-02-18 01:55:26,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:55:26,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816344055] [2023-02-18 01:55:26,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816344055] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:55:26,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:55:26,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-02-18 01:55:26,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913941221] [2023-02-18 01:55:26,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:55:26,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 01:55:26,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:55:26,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 01:55:26,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-18 01:55:26,757 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-18 01:55:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:55:26,836 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2023-02-18 01:55:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 01:55:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 50 [2023-02-18 01:55:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:55:26,837 INFO L225 Difference]: With dead ends: 51 [2023-02-18 01:55:26,837 INFO L226 Difference]: Without dead ends: 39 [2023-02-18 01:55:26,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-18 01:55:26,838 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:55:26,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 145 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:55:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-18 01:55:26,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-02-18 01:55:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 01:55:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-02-18 01:55:26,856 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 50 [2023-02-18 01:55:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:55:26,856 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-02-18 01:55:26,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-18 01:55:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-02-18 01:55:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-18 01:55:26,857 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:55:26,857 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:55:26,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 01:55:27,063 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 [2023-02-18 01:55:27,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:55:27,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:55:27,064 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 1 times [2023-02-18 01:55:27,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:55:27,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306365268] [2023-02-18 01:55:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:27,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:55:27,072 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:55:27,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997462770] [2023-02-18 01:55:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:55:27,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:55:27,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:55:27,073 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:55:27,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 01:55:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:55:27,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 01:55:27,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:55:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-18 01:55:27,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:55:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-18 01:55:27,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:55:27,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306365268] [2023-02-18 01:55:27,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:55:27,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997462770] [2023-02-18 01:55:27,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997462770] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:55:27,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:55:27,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-18 01:55:27,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439142580] [2023-02-18 01:55:27,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:55:27,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 01:55:27,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:55:27,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 01:55:27,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-18 01:55:27,163 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 6 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2023-02-18 01:55:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:55:27,202 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2023-02-18 01:55:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 01:55:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 6 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 52 [2023-02-18 01:55:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:55:27,203 INFO L225 Difference]: With dead ends: 50 [2023-02-18 01:55:27,203 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 01:55:27,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-02-18 01:55:27,204 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:55:27,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 68 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:55:27,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 01:55:27,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 01:55:27,204 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) [2023-02-18 01:55:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 01:55:27,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2023-02-18 01:55:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:55:27,205 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 01:55:27,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 6 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2023-02-18 01:55:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 01:55:27,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 01:55:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 01:55:27,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 01:55:27,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:55:27,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 01:55:27,423 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse1 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse2 (>= |ULTIMATE.start_main_~x~0#1| 1)) (.cse3 (>= |ULTIMATE.start_main_~x~0#1| 0))) (and (<= |ULTIMATE.start_main_~b~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (>= |ULTIMATE.start_main_~y~0#1| 1) (let ((.cse0 (forall ((|ULTIMATE.start_main_~r~0#1| Int)) (= (+ (- (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) 1)))) (or (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| 0) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse3) (and .cse0 .cse1 .cse2 .cse3))) (>= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse2 (<= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1))) [2023-02-18 01:55:27,423 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 01:55:27,423 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (>= |ULTIMATE.start_main_~y~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (>= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (>= |ULTIMATE.start_main_~x~0#1| 0)) [2023-02-18 01:55:27,423 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse1 (>= |ULTIMATE.start_main_~x~0#1| 1)) (.cse2 (>= |ULTIMATE.start_main_~x~0#1| 0))) (and (or (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| 0) .cse0 .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2) (and .cse0 .cse1 .cse2)) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (>= |ULTIMATE.start_main_~y~0#1| 1) (>= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 .cse1 (<= |ULTIMATE.start_main_~y~0#1| 1) .cse2 (= |ULTIMATE.start_main_~s~0#1| 1))) [2023-02-18 01:55:27,423 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse1 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse2 (>= |ULTIMATE.start_main_~x~0#1| 1)) (.cse3 (>= |ULTIMATE.start_main_~x~0#1| 0))) (and (<= |ULTIMATE.start_main_~b~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (>= |ULTIMATE.start_main_~y~0#1| 1) (let ((.cse0 (forall ((|ULTIMATE.start_main_~r~0#1| Int)) (= (+ (- (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) 1)))) (or (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| 0) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse3) (and .cse0 .cse1 .cse2 .cse3))) (>= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse2 (<= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1))) [2023-02-18 01:55:27,423 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 01:55:27,423 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 18 59) the Hoare annotation is: true [2023-02-18 01:55:27,423 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2023-02-18 01:55:27,423 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (>= |ULTIMATE.start_main_~y~0#1| 1) (<= 1 |ULTIMATE.start_main_~b~0#1|) (>= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (forall ((|ULTIMATE.start_main_~r~0#1| Int)) (= (+ (- (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) 1)) (<= |ULTIMATE.start_main_~x~0#1| 1) (>= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (>= |ULTIMATE.start_main_~x~0#1| 0) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1)) [2023-02-18 01:55:27,424 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (>= |ULTIMATE.start_main_~y~0#1| 1) (<= 1 |ULTIMATE.start_main_~b~0#1|) (>= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (forall ((|ULTIMATE.start_main_~r~0#1| Int)) (= (+ (- (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) 1)) (<= |ULTIMATE.start_main_~x~0#1| 1) (>= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (>= |ULTIMATE.start_main_~x~0#1| 0) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1)) [2023-02-18 01:55:27,424 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 01:55:27,424 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 01:55:27,424 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-02-18 01:55:27,424 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2023-02-18 01:55:27,424 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 1) (>= |ULTIMATE.start_main_~x~0#1| 0)) [2023-02-18 01:55:27,424 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (>= |ULTIMATE.start_main_~y~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (>= |ULTIMATE.start_main_~x~0#1| 0)) [2023-02-18 01:55:27,424 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse1 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse2 (>= |ULTIMATE.start_main_~x~0#1| 1)) (.cse3 (>= |ULTIMATE.start_main_~x~0#1| 0))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (>= |ULTIMATE.start_main_~y~0#1| 1) (let ((.cse0 (forall ((|ULTIMATE.start_main_~r~0#1| Int)) (= (+ (- (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) 1)))) (or (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| 0) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse3) (and .cse0 .cse1 .cse2 .cse3))) (>= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 .cse2 (<= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= |ULTIMATE.start_main_~s~0#1| 1))) [2023-02-18 01:55:27,424 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2023-02-18 01:55:27,424 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-02-18 01:55:27,424 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2023-02-18 01:55:27,424 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (>= |ULTIMATE.start_main_~y~0#1| 1) (<= 1 |ULTIMATE.start_main_~b~0#1|) (>= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (forall ((|ULTIMATE.start_main_~r~0#1| Int)) (= (+ (- (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) 1)) (<= |ULTIMATE.start_main_~x~0#1| 1) (>= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (>= |ULTIMATE.start_main_~x~0#1| 0) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1)) [2023-02-18 01:55:27,425 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse2 (>= |ULTIMATE.start_main_~y~0#1| 1)) (.cse7 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse10 (>= |ULTIMATE.start_main_~x~0#1| 0))) (and (<= |ULTIMATE.start_main_~a~0#1| 1) (let ((.cse0 (<= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (>= |ULTIMATE.start_main_~y~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~a~0#1|)) (.cse6 (forall ((|ULTIMATE.start_main_~r~0#1| Int)) (= (+ (- (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) 1))) (.cse8 (>= |ULTIMATE.start_main_~x~0#1| 1)) (.cse9 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~r~0#1| 0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 .cse11))) .cse2 (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse7 .cse10 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) [2023-02-18 01:55:27,425 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-02-18 01:55:27,425 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-02-18 01:55:27,425 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-02-18 01:55:27,425 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-02-18 01:55:27,425 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-02-18 01:55:27,425 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-02-18 01:55:27,425 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-02-18 01:55:27,425 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-02-18 01:55:27,425 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-02-18 01:55:27,425 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-02-18 01:55:27,427 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:55:27,428 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 01:55:27,434 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~r~0#1,QUANTIFIED] [2023-02-18 01:55:27,438 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~r~0#1,QUANTIFIED] [2023-02-18 01:55:27,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 01:55:27 BoogieIcfgContainer [2023-02-18 01:55:27,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 01:55:27,439 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 01:55:27,439 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 01:55:27,439 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 01:55:27,439 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:55:23" (3/4) ... [2023-02-18 01:55:27,441 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 01:55:27,445 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-18 01:55:27,445 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-18 01:55:27,447 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-18 01:55:27,447 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 01:55:27,447 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 01:55:27,447 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 01:55:27,474 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 01:55:27,474 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 01:55:27,475 INFO L158 Benchmark]: Toolchain (without parser) took 4225.52ms. Allocated memory was 121.6MB in the beginning and 161.5MB in the end (delta: 39.8MB). Free memory was 86.0MB in the beginning and 92.3MB in the end (delta: -6.4MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2023-02-18 01:55:27,475 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 121.6MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 01:55:27,475 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.58ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 75.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 01:55:27,475 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.67ms. Allocated memory is still 121.6MB. Free memory was 75.2MB in the beginning and 73.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 01:55:27,476 INFO L158 Benchmark]: Boogie Preprocessor took 13.00ms. Allocated memory is still 121.6MB. Free memory was 73.6MB in the beginning and 72.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 01:55:27,476 INFO L158 Benchmark]: RCFGBuilder took 259.75ms. Allocated memory is still 121.6MB. Free memory was 72.5MB in the beginning and 61.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 01:55:27,476 INFO L158 Benchmark]: TraceAbstraction took 3735.42ms. Allocated memory was 121.6MB in the beginning and 161.5MB in the end (delta: 39.8MB). Free memory was 60.9MB in the beginning and 95.5MB in the end (delta: -34.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-02-18 01:55:27,476 INFO L158 Benchmark]: Witness Printer took 35.62ms. Allocated memory is still 161.5MB. Free memory was 95.5MB in the beginning and 92.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 01:55:27,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 121.6MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.58ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 75.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.67ms. Allocated memory is still 121.6MB. Free memory was 75.2MB in the beginning and 73.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.00ms. Allocated memory is still 121.6MB. Free memory was 73.6MB in the beginning and 72.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 259.75ms. Allocated memory is still 121.6MB. Free memory was 72.5MB in the beginning and 61.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3735.42ms. Allocated memory was 121.6MB in the beginning and 161.5MB in the end (delta: 39.8MB). Free memory was 60.9MB in the beginning and 95.5MB in the end (delta: -34.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Witness Printer took 35.62ms. Allocated memory is still 161.5MB. Free memory was 95.5MB in the beginning and 92.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~r~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~r~0#1,QUANTIFIED] * 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: 13]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 146 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 835 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 631 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 794 IncrementalHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 204 mSDtfsCounter, 794 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 482 GetRequests, 404 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=4, InterpolantAutomatonStates: 56, 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, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 47 PreInvPairs, 60 NumberOfFragments, 706 HoareAnnotationTreeSize, 47 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 463 ConstructedInterpolants, 2 QuantifiedInterpolants, 1283 SizeOfPredicates, 45 NumberOfNonLiveVariables, 798 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 416/466 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: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant [2023-02-18 01:55:27,491 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~r~0#1,QUANTIFIED] [2023-02-18 01:55:27,495 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~r~0#1,QUANTIFIED] Derived loop invariant: ((((((((((((((((p == 1 && b <= 1) && a <= 1) && b == y) && y >= 1) && 1 <= b) && y >= 0) && r == 0) && q == 0) && 1 <= a) && (forall ULTIMATE.start_main_~r~0#1 : int :: -(q * ULTIMATE.start_main_~r~0#1) + p * s == 1)) && x <= 1) && x >= 1) && y <= 1) && a == x) && x >= 0) && r * y + p * x == a) && s == 1 RESULT: Ultimate proved your program to be correct! [2023-02-18 01:55:27,514 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