./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/cohendiv-ll_unwindbound10.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 a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:46:25,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:46:25,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:46:25,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:46:25,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:46:25,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:46:25,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:46:25,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:46:25,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:46:25,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:46:25,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:46:25,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:46:25,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:46:25,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:46:25,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:46:25,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:46:25,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:46:25,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:46:25,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:46:25,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:46:25,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:46:25,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:46:25,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:46:25,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:46:25,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:46:25,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:46:25,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:46:25,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:46:25,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:46:25,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:46:25,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:46:25,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:46:25,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:46:25,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:46:25,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:46:25,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:46:25,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:46:25,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:46:25,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:46:25,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:46:25,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:46:25,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:46:25,955 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:46:25,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:46:25,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:46:25,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:46:25,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:46:25,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:46:25,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:46:25,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:46:25,958 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:46:25,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:46:25,958 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:46:25,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:46:25,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:46:25,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:46:25,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:46:25,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:46:25,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:46:25,959 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:46:25,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:46:25,960 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:46:25,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:46:25,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:46:25,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:46:25,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:46:25,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:46:25,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:46:25,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:46:25,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:46:25,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:46:25,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:46:25,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:46:25,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:46:25,962 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:46:25,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:46:25,962 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:46:25,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 [2023-02-16 01:46:26,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:46:26,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:46:26,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:46:26,164 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:46:26,164 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:46:26,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2023-02-16 01:46:27,279 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:46:27,443 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:46:27,443 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2023-02-16 01:46:27,449 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa667f38/04a920088acc42e79225bc32f9ad5464/FLAGc6ed4f577 [2023-02-16 01:46:27,468 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa667f38/04a920088acc42e79225bc32f9ad5464 [2023-02-16 01:46:27,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:46:27,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:46:27,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:46:27,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:46:27,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:46:27,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73337577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27, skipping insertion in model container [2023-02-16 01:46:27,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:46:27,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:46:27,633 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/cohendiv-ll_unwindbound10.c[576,589] [2023-02-16 01:46:27,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:46:27,665 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:46:27,676 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/cohendiv-ll_unwindbound10.c[576,589] [2023-02-16 01:46:27,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:46:27,694 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:46:27,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27 WrapperNode [2023-02-16 01:46:27,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:46:27,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:46:27,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:46:27,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:46:27,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,717 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-02-16 01:46:27,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:46:27,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:46:27,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:46:27,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:46:27,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,730 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:46:27,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:46:27,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:46:27,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:46:27,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (1/1) ... [2023-02-16 01:46:27,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:46:27,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:27,762 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) [2023-02-16 01:46:27,770 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 [2023-02-16 01:46:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:46:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:46:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:46:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:46:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 01:46:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 01:46:27,842 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:46:27,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:46:27,965 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:46:27,971 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:46:27,971 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 01:46:27,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:46:27 BoogieIcfgContainer [2023-02-16 01:46:27,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:46:27,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:46:27,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:46:27,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:46:27,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:46:27" (1/3) ... [2023-02-16 01:46:27,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37db94a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:46:27, skipping insertion in model container [2023-02-16 01:46:27,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:46:27" (2/3) ... [2023-02-16 01:46:27,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37db94a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:46:27, skipping insertion in model container [2023-02-16 01:46:27,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:46:27" (3/3) ... [2023-02-16 01:46:27,980 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound10.c [2023-02-16 01:46:28,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:46:28,010 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:46:28,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:46:28,075 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;@7feae42b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:46:28,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:46:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 01:46:28,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 01:46:28,101 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:46:28,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:28,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:46:28,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:46:28,106 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2023-02-16 01:46:28,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:46:28,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621934232] [2023-02-16 01:46:28,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:28,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:46:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:28,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:46:28,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621934232] [2023-02-16 01:46:28,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 01:46:28,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546816139] [2023-02-16 01:46:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:28,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:28,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:28,245 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) [2023-02-16 01:46:28,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:46:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:28,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 01:46:28,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:46:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:46:28,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:46:28,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546816139] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:46:28,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:46:28,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 01:46:28,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120120268] [2023-02-16 01:46:28,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:46:28,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 01:46:28,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:46:28,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 01:46:28,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:46:28,379 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:46:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:46:28,397 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2023-02-16 01:46:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 01:46:28,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 01:46:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:46:28,405 INFO L225 Difference]: With dead ends: 55 [2023-02-16 01:46:28,405 INFO L226 Difference]: Without dead ends: 25 [2023-02-16 01:46:28,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:46:28,410 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:46:28,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:46:28,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-16 01:46:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-16 01:46:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 01:46:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-02-16 01:46:28,439 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2023-02-16 01:46:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:46:28,440 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-02-16 01:46:28,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:46:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-02-16 01:46:28,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 01:46:28,441 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:46:28,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:28,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 01:46:28,645 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 [2023-02-16 01:46:28,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:46:28,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:46:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2023-02-16 01:46:28,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:46:28,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187767654] [2023-02-16 01:46:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:28,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:46:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:28,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:46:28,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187767654] [2023-02-16 01:46:28,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 01:46:28,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084975210] [2023-02-16 01:46:28,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:28,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:28,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:28,689 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) [2023-02-16 01:46:28,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:46:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:28,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 01:46:28,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:46:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:46:28,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:46:28,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084975210] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:46:28,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:46:28,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:46:28,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967589922] [2023-02-16 01:46:28,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:46:28,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:46:28,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:46:28,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:46:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:46:28,781 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:46:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:46:28,800 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2023-02-16 01:46:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:46:28,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-16 01:46:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:46:28,802 INFO L225 Difference]: With dead ends: 34 [2023-02-16 01:46:28,803 INFO L226 Difference]: Without dead ends: 27 [2023-02-16 01:46:28,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:46:28,805 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:46:28,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:46:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-16 01:46:28,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-16 01:46:28,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 01:46:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-02-16 01:46:28,817 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2023-02-16 01:46:28,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:46:28,817 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-02-16 01:46:28,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:46:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-02-16 01:46:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 01:46:28,818 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:46:28,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:28,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 01:46:29,024 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 [2023-02-16 01:46:29,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:46:29,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:46:29,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2023-02-16 01:46:29,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:46:29,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540305518] [2023-02-16 01:46:29,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:29,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:46:29,038 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:46:29,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559324270] [2023-02-16 01:46:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:29,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:29,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:29,040 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) [2023-02-16 01:46:29,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:46:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:29,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 01:46:29,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:46:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:46:29,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:46:29,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:46:29,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540305518] [2023-02-16 01:46:29,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:46:29,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559324270] [2023-02-16 01:46:29,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559324270] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:46:29,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:46:29,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 01:46:29,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134842595] [2023-02-16 01:46:29,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:46:29,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 01:46:29,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:46:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 01:46:29,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-16 01:46:29,195 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:46:29,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:46:29,303 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2023-02-16 01:46:29,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 01:46:29,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-16 01:46:29,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:46:29,305 INFO L225 Difference]: With dead ends: 37 [2023-02-16 01:46:29,305 INFO L226 Difference]: Without dead ends: 35 [2023-02-16 01:46:29,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-16 01:46:29,307 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:46:29,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 93 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:46:29,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-16 01:46:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-16 01:46:29,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 01:46:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-02-16 01:46:29,316 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2023-02-16 01:46:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:46:29,316 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-02-16 01:46:29,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:46:29,317 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-02-16 01:46:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 01:46:29,317 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:46:29,318 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:29,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 01:46:29,526 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 [2023-02-16 01:46:29,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:46:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:46:29,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2023-02-16 01:46:29,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:46:29,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286811484] [2023-02-16 01:46:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:29,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:46:29,536 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:46:29,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058407829] [2023-02-16 01:46:29,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:29,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:29,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:29,538 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) [2023-02-16 01:46:29,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:46:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:29,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 01:46:29,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:46:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:46:29,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:46:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:46:29,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:46:29,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286811484] [2023-02-16 01:46:29,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:46:29,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058407829] [2023-02-16 01:46:29,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058407829] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 01:46:29,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:46:29,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2023-02-16 01:46:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847647785] [2023-02-16 01:46:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:46:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 01:46:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:46:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 01:46:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-16 01:46:29,764 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:46:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:46:29,846 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2023-02-16 01:46:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:46:29,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-16 01:46:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:46:29,850 INFO L225 Difference]: With dead ends: 50 [2023-02-16 01:46:29,851 INFO L226 Difference]: Without dead ends: 47 [2023-02-16 01:46:29,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-16 01:46:29,858 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:46:29,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 127 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:46:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-16 01:46:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-16 01:46:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 01:46:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2023-02-16 01:46:29,881 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2023-02-16 01:46:29,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:46:29,881 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2023-02-16 01:46:29,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:46:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-02-16 01:46:29,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 01:46:29,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:46:29,885 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:29,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 01:46:30,086 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 [2023-02-16 01:46:30,086 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:46:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:46:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2023-02-16 01:46:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:46:30,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193496895] [2023-02-16 01:46:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:30,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:46:30,098 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:46:30,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518035247] [2023-02-16 01:46:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:30,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:30,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:30,101 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) [2023-02-16 01:46:30,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 01:46:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:30,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 01:46:30,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:46:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:46:30,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:46:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:46:30,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:46:30,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193496895] [2023-02-16 01:46:30,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:46:30,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518035247] [2023-02-16 01:46:30,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518035247] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 01:46:30,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:46:30,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-02-16 01:46:30,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253433145] [2023-02-16 01:46:30,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:46:30,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:46:30,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:46:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:46:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-16 01:46:30,284 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 01:46:30,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:46:30,354 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2023-02-16 01:46:30,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:46:30,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-02-16 01:46:30,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:46:30,356 INFO L225 Difference]: With dead ends: 52 [2023-02-16 01:46:30,356 INFO L226 Difference]: Without dead ends: 50 [2023-02-16 01:46:30,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-16 01:46:30,357 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:46:30,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 64 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:46:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-16 01:46:30,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-16 01:46:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 01:46:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2023-02-16 01:46:30,368 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 23 [2023-02-16 01:46:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:46:30,368 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2023-02-16 01:46:30,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 01:46:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2023-02-16 01:46:30,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 01:46:30,369 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:46:30,369 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:30,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 01:46:30,574 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 [2023-02-16 01:46:30,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:46:30,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:46:30,576 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2023-02-16 01:46:30,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:46:30,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953549231] [2023-02-16 01:46:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:30,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:46:30,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:46:30,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043299059] [2023-02-16 01:46:30,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:30,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:30,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:30,591 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) [2023-02-16 01:46:30,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 01:46:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:30,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:46:30,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:46:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:46:30,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:46:30,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:46:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953549231] [2023-02-16 01:46:30,673 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:46:30,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043299059] [2023-02-16 01:46:30,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043299059] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:46:30,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:46:30,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 01:46:30,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776436779] [2023-02-16 01:46:30,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:46:30,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:46:30,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:46:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:46:30,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:46:30,676 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 01:46:30,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:46:30,700 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-02-16 01:46:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 01:46:30,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-02-16 01:46:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:46:30,702 INFO L225 Difference]: With dead ends: 81 [2023-02-16 01:46:30,702 INFO L226 Difference]: Without dead ends: 56 [2023-02-16 01:46:30,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:46:30,703 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:46:30,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:46:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-16 01:46:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-16 01:46:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 01:46:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-02-16 01:46:30,713 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 26 [2023-02-16 01:46:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:46:30,714 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-02-16 01:46:30,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 01:46:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-02-16 01:46:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 01:46:30,715 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:46:30,715 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:30,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-16 01:46:30,920 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 [2023-02-16 01:46:30,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:46:30,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:46:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2023-02-16 01:46:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:46:30,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543018833] [2023-02-16 01:46:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:46:30,930 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:46:30,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755862192] [2023-02-16 01:46:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:30,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:30,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:30,931 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) [2023-02-16 01:46:30,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 01:46:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:30,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 01:46:30,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:46:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 01:46:31,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:46:31,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:46:31,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543018833] [2023-02-16 01:46:31,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:46:31,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755862192] [2023-02-16 01:46:31,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755862192] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:46:31,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:46:31,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 01:46:31,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113124880] [2023-02-16 01:46:31,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:46:31,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 01:46:31,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:46:31,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 01:46:31,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 01:46:31,083 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 01:46:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:46:31,197 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-02-16 01:46:31,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 01:46:31,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-02-16 01:46:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:46:31,200 INFO L225 Difference]: With dead ends: 62 [2023-02-16 01:46:31,200 INFO L226 Difference]: Without dead ends: 60 [2023-02-16 01:46:31,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-16 01:46:31,202 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:46:31,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 90 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:46:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-16 01:46:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-16 01:46:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.175) internal successors, (47), 41 states have internal predecessors, (47), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 01:46:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2023-02-16 01:46:31,223 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 33 [2023-02-16 01:46:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:46:31,223 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2023-02-16 01:46:31,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 01:46:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2023-02-16 01:46:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-16 01:46:31,226 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:46:31,226 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:31,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 01:46:31,431 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 [2023-02-16 01:46:31,432 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:46:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:46:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2023-02-16 01:46:31,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:46:31,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685877501] [2023-02-16 01:46:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:31,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:46:31,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:46:31,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595969843] [2023-02-16 01:46:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:31,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:31,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:31,444 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:46:31,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 01:46:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:31,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 01:46:31,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:46:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-16 01:46:31,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:46:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-16 01:46:31,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:46:31,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685877501] [2023-02-16 01:46:31,775 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:46:31,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595969843] [2023-02-16 01:46:31,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595969843] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:46:31,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:46:31,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-16 01:46:31,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454873988] [2023-02-16 01:46:31,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:46:31,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 01:46:31,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:46:31,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 01:46:31,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:46:31,777 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-16 01:46:32,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:46:32,060 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2023-02-16 01:46:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 01:46:32,060 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2023-02-16 01:46:32,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:46:32,062 INFO L225 Difference]: With dead ends: 79 [2023-02-16 01:46:32,062 INFO L226 Difference]: Without dead ends: 77 [2023-02-16 01:46:32,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-02-16 01:46:32,063 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:46:32,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 139 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 01:46:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-16 01:46:32,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2023-02-16 01:46:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 01:46:32,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-02-16 01:46:32,073 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 39 [2023-02-16 01:46:32,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:46:32,074 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-02-16 01:46:32,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-16 01:46:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-02-16 01:46:32,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-16 01:46:32,075 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:46:32,075 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:32,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 01:46:32,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-16 01:46:32,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:46:32,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:46:32,281 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2023-02-16 01:46:32,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:46:32,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475729263] [2023-02-16 01:46:32,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:32,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:46:32,289 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:46:32,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754182831] [2023-02-16 01:46:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:32,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:32,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:32,291 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:46:32,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 01:46:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:32,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 01:46:32,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:46:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-16 01:46:32,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:46:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 01:46:32,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:46:32,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475729263] [2023-02-16 01:46:32,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:46:32,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754182831] [2023-02-16 01:46:32,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754182831] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:46:32,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:46:32,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-02-16 01:46:32,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469639947] [2023-02-16 01:46:32,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:46:32,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 01:46:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:46:32,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 01:46:32,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-16 01:46:32,488 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-16 01:46:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:46:32,643 INFO L93 Difference]: Finished difference Result 225 states and 264 transitions. [2023-02-16 01:46:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 01:46:32,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 42 [2023-02-16 01:46:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:46:32,645 INFO L225 Difference]: With dead ends: 225 [2023-02-16 01:46:32,645 INFO L226 Difference]: Without dead ends: 218 [2023-02-16 01:46:32,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:46:32,646 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 89 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:46:32,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 193 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:46:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-02-16 01:46:32,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2023-02-16 01:46:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 132 states have (on average 1.1818181818181819) internal successors, (156), 136 states have internal predecessors, (156), 44 states have call successors, (44), 25 states have call predecessors, (44), 25 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-02-16 01:46:32,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 240 transitions. [2023-02-16 01:46:32,672 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 240 transitions. Word has length 42 [2023-02-16 01:46:32,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:46:32,672 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 240 transitions. [2023-02-16 01:46:32,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-16 01:46:32,672 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 240 transitions. [2023-02-16 01:46:32,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-16 01:46:32,673 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:46:32,673 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:32,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 01:46:32,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:32,878 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:46:32,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:46:32,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082637, now seen corresponding path program 1 times [2023-02-16 01:46:32,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:46:32,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4612796] [2023-02-16 01:46:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:32,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:46:32,886 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:46:32,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263150318] [2023-02-16 01:46:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:46:32,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:46:32,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:46:32,888 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:46:32,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 01:46:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:46:32,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-16 01:46:32,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:46:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-16 01:46:33,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:46:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-16 01:46:33,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:46:33,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4612796] [2023-02-16 01:46:33,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:46:33,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263150318] [2023-02-16 01:46:33,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263150318] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 01:46:33,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:46:33,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-02-16 01:46:33,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287882721] [2023-02-16 01:46:33,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:46:33,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 01:46:33,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:46:33,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 01:46:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-16 01:46:33,428 INFO L87 Difference]: Start difference. First operand 202 states and 240 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 01:46:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:46:33,604 INFO L93 Difference]: Finished difference Result 202 states and 240 transitions. [2023-02-16 01:46:33,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:46:33,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2023-02-16 01:46:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:46:33,606 INFO L225 Difference]: With dead ends: 202 [2023-02-16 01:46:33,606 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 01:46:33,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-02-16 01:46:33,607 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:46:33,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 55 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:46:33,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 01:46:33,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 01:46:33,608 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) [2023-02-16 01:46:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 01:46:33,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2023-02-16 01:46:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:46:33,609 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 01:46:33,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 01:46:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 01:46:33,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 01:46:33,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 01:46:33,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 01:46:33,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-16 01:46:33,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 01:46:34,426 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-16 01:46:34,426 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-16 01:46:34,426 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 23 65) the Hoare annotation is: true [2023-02-16 01:46:34,426 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 01:46:34,426 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 01:46:34,426 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2023-02-16 01:46:34,426 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-16 01:46:34,426 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2023-02-16 01:46:34,426 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-16 01:46:34,426 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) .cse0 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) .cse1) (and (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1))) [2023-02-16 01:46:34,426 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 01:46:34,426 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (and (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= (* 2 .cse0) |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| .cse0) (<= 1 |ULTIMATE.start_main_~y~0#1|))) [2023-02-16 01:46:34,427 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2023-02-16 01:46:34,427 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2023-02-16 01:46:34,427 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-16 01:46:34,427 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2023-02-16 01:46:34,427 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 01:46:34,427 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-16 01:46:34,427 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-16 01:46:34,427 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-02-16 01:46:34,427 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-16 01:46:34,427 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-16 01:46:34,427 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2023-02-16 01:46:34,427 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-16 01:46:34,427 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-16 01:46:34,428 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-16 01:46:34,428 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-16 01:46:34,428 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-16 01:46:34,428 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-16 01:46:34,431 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:46:34,432 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 01:46:34,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 01:46:34 BoogieIcfgContainer [2023-02-16 01:46:34,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 01:46:34,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 01:46:34,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 01:46:34,444 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 01:46:34,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:46:27" (3/4) ... [2023-02-16 01:46:34,447 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 01:46:34,452 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-16 01:46:34,455 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-16 01:46:34,455 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-16 01:46:34,455 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 01:46:34,455 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 01:46:34,480 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 01:46:34,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 01:46:34,481 INFO L158 Benchmark]: Toolchain (without parser) took 7008.50ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 84.0MB in the beginning and 57.8MB in the end (delta: 26.2MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2023-02-16 01:46:34,481 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory was 95.6MB in the beginning and 95.4MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:46:34,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.57ms. Allocated memory is still 130.0MB. Free memory was 84.0MB in the beginning and 73.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 01:46:34,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.94ms. Allocated memory is still 130.0MB. Free memory was 73.5MB in the beginning and 71.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:46:34,482 INFO L158 Benchmark]: Boogie Preprocessor took 14.43ms. Allocated memory is still 130.0MB. Free memory was 71.9MB in the beginning and 70.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:46:34,482 INFO L158 Benchmark]: RCFGBuilder took 239.76ms. Allocated memory is still 130.0MB. Free memory was 70.8MB in the beginning and 59.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 01:46:34,483 INFO L158 Benchmark]: TraceAbstraction took 6469.00ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 59.3MB in the beginning and 61.0MB in the end (delta: -1.7MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2023-02-16 01:46:34,483 INFO L158 Benchmark]: Witness Printer took 36.57ms. Allocated memory is still 157.3MB. Free memory was 61.0MB in the beginning and 57.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-16 01:46:34,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory was 95.6MB in the beginning and 95.4MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.57ms. Allocated memory is still 130.0MB. Free memory was 84.0MB in the beginning and 73.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.94ms. Allocated memory is still 130.0MB. Free memory was 73.5MB in the beginning and 71.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.43ms. Allocated memory is still 130.0MB. Free memory was 71.9MB in the beginning and 70.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 239.76ms. Allocated memory is still 130.0MB. Free memory was 70.8MB in the beginning and 59.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6469.00ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 59.3MB in the beginning and 61.0MB in the end (delta: -1.7MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Witness Printer took 36.57ms. Allocated memory is still 157.3MB. Free memory was 61.0MB in the beginning and 57.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 277 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 984 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 666 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 666 IncrementalHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 318 mSDtfsCounter, 666 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 422 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=9, InterpolantAutomatonStates: 65, 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, 10 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 71 PreInvPairs, 131 NumberOfFragments, 209 HoareAnnotationTreeSize, 71 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 3356 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 1373 SizeOfPredicates, 41 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 374/418 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: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((1 <= r && x == r + y * q) && cond == 1) && b == y * a) && 1 <= y - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((x == r + y * q && cond == 1) && b == y * a) && 1 <= y RESULT: Ultimate proved your program to be correct! [2023-02-16 01:46:34,502 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