./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat2-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/fermat2-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 96b71e4fe20331af08d1b5394215c6ca1c246124118142d0900823a256b0e31d --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:08:19,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:08:19,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:08:19,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:08:19,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:08:19,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:08:19,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:08:19,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:08:19,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:08:19,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:08:19,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:08:19,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:08:19,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:08:19,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:08:19,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:08:19,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:08:19,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:08:19,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:08:19,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:08:19,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:08:19,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:08:19,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:08:19,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:08:19,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:08:19,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:08:19,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:08:19,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:08:19,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:08:19,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:08:19,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:08:19,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:08:19,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:08:19,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:08:19,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:08:19,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:08:19,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:08:19,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:08:19,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:08:19,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:08:19,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:08:19,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:08:19,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:08:19,928 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:08:19,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:08:19,929 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:08:19,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:08:19,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:08:19,930 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:08:19,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:08:19,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:08:19,931 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:08:19,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:08:19,932 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:08:19,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:08:19,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:08:19,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:08:19,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:08:19,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:08:19,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:08:19,933 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:08:19,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:08:19,933 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:08:19,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:08:19,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:08:19,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:08:19,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:08:19,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:08:19,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:08:19,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:08:19,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:08:19,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:08:19,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:08:19,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:08:19,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:08:19,935 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:08:19,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:08:19,936 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:08:19,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96b71e4fe20331af08d1b5394215c6ca1c246124118142d0900823a256b0e31d [2023-02-16 02:08:20,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:08:20,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:08:20,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:08:20,171 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:08:20,171 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:08:20,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2023-02-16 02:08:21,161 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:08:21,327 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:08:21,328 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2023-02-16 02:08:21,332 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a20850e70/88dfdfb5dc9d41c8a6f5809672d4d2a9/FLAG287374159 [2023-02-16 02:08:21,342 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a20850e70/88dfdfb5dc9d41c8a6f5809672d4d2a9 [2023-02-16 02:08:21,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:08:21,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:08:21,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:08:21,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:08:21,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:08:21,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba62fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21, skipping insertion in model container [2023-02-16 02:08:21,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:08:21,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:08:21,477 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/fermat2-ll_unwindbound10.c[524,537] [2023-02-16 02:08:21,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:08:21,505 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:08:21,515 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/fermat2-ll_unwindbound10.c[524,537] [2023-02-16 02:08:21,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:08:21,538 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:08:21,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21 WrapperNode [2023-02-16 02:08:21,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:08:21,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:08:21,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:08:21,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:08:21,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,561 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-02-16 02:08:21,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:08:21,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:08:21,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:08:21,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:08:21,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:08:21,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:08:21,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:08:21,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:08:21,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (1/1) ... [2023-02-16 02:08:21,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:08:21,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:08:21,616 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 02:08:21,623 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 02:08:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:08:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 02:08:21,669 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 02:08:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:08:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:08:21,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:08:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 02:08:21,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 02:08:21,707 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:08:21,709 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:08:21,875 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:08:21,879 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:08:21,892 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 02:08:21,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:08:21 BoogieIcfgContainer [2023-02-16 02:08:21,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:08:21,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:08:21,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:08:21,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:08:21,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:08:21" (1/3) ... [2023-02-16 02:08:21,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46965c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:08:21, skipping insertion in model container [2023-02-16 02:08:21,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:08:21" (2/3) ... [2023-02-16 02:08:21,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46965c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:08:21, skipping insertion in model container [2023-02-16 02:08:21,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:08:21" (3/3) ... [2023-02-16 02:08:21,915 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound10.c [2023-02-16 02:08:21,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:08:21,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:08:21,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:08:21,982 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;@23b421ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:08:21,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:08:21,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 02:08:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 02:08:21,990 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:08:21,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:08:21,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:08:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:08:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1086166160, now seen corresponding path program 1 times [2023-02-16 02:08:22,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:08:22,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765700416] [2023-02-16 02:08:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:22,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:08:22,072 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:08:22,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980624544] [2023-02-16 02:08:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:22,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:08:22,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:08:22,076 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 02:08:22,077 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 02:08:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:08:22,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 02:08:22,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:08:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 02:08:22,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:08:22,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:08:22,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765700416] [2023-02-16 02:08:22,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:08:22,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980624544] [2023-02-16 02:08:22,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980624544] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:08:22,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:08:22,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 02:08:22,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883224698] [2023-02-16 02:08:22,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:08:22,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 02:08:22,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:08:22,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 02:08:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:08:22,164 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:08:22,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:08:22,177 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2023-02-16 02:08:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 02:08:22,179 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-16 02:08:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:08:22,183 INFO L225 Difference]: With dead ends: 47 [2023-02-16 02:08:22,183 INFO L226 Difference]: Without dead ends: 21 [2023-02-16 02:08:22,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:08:22,187 INFO L413 NwaCegarLoop]: 29 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, 29 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 02:08:22,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:08:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-16 02:08:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-16 02:08:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:08:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-02-16 02:08:22,209 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2023-02-16 02:08:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:08:22,209 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-02-16 02:08:22,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:08:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-02-16 02:08:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 02:08:22,211 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:08:22,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:08:22,216 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 02:08:22,416 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 02:08:22,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:08:22,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:08:22,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1345709874, now seen corresponding path program 1 times [2023-02-16 02:08:22,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:08:22,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512587038] [2023-02-16 02:08:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:22,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:08:22,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:08:22,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626790453] [2023-02-16 02:08:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:22,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:08:22,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:08:22,465 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 02:08:22,468 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 02:08:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:08:22,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 02:08:22,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:08:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:08:22,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:08:22,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:08:22,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512587038] [2023-02-16 02:08:22,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:08:22,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626790453] [2023-02-16 02:08:22,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626790453] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:08:22,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:08:22,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 02:08:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29838361] [2023-02-16 02:08:22,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:08:22,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 02:08:22,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:08:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 02:08:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 02:08:22,593 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 02:08:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:08:22,611 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2023-02-16 02:08:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 02:08:22,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 19 [2023-02-16 02:08:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:08:22,612 INFO L225 Difference]: With dead ends: 30 [2023-02-16 02:08:22,613 INFO L226 Difference]: Without dead ends: 23 [2023-02-16 02:08:22,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 02:08:22,614 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:08:22,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:08:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-16 02:08:22,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-16 02:08:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:08:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-16 02:08:22,623 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2023-02-16 02:08:22,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:08:22,624 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-16 02:08:22,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 02:08:22,625 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-16 02:08:22,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 02:08:22,626 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:08:22,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:08:22,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 02:08:22,829 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 02:08:22,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:08:22,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:08:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1347497334, now seen corresponding path program 1 times [2023-02-16 02:08:22,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:08:22,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582349494] [2023-02-16 02:08:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:08:22,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:08:22,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344354645] [2023-02-16 02:08:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:22,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:08:22,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:08:22,840 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 02:08:22,842 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 02:08:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:08:22,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 02:08:22,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:08:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:08:22,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:08:22,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:08:22,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582349494] [2023-02-16 02:08:22,974 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:08:22,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344354645] [2023-02-16 02:08:22,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344354645] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:08:22,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:08:22,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 02:08:22,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797767585] [2023-02-16 02:08:22,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:08:22,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:08:22,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:08:22,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:08:22,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 02:08:22,976 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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 02:08:23,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:08:23,906 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2023-02-16 02:08:23,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 02:08:23,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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 19 [2023-02-16 02:08:23,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:08:23,907 INFO L225 Difference]: With dead ends: 35 [2023-02-16 02:08:23,907 INFO L226 Difference]: Without dead ends: 33 [2023-02-16 02:08:23,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:08:23,908 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 02:08:23,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 69 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-16 02:08:23,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-16 02:08:23,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2023-02-16 02:08:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 02:08:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-02-16 02:08:23,920 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 19 [2023-02-16 02:08:23,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:08:23,929 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-02-16 02:08:23,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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 02:08:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-02-16 02:08:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 02:08:23,931 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:08:23,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:08:23,937 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 02:08:24,136 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 02:08:24,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:08:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:08:24,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1636478750, now seen corresponding path program 1 times [2023-02-16 02:08:24,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:08:24,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409408331] [2023-02-16 02:08:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:24,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:08:24,144 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:08:24,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879009809] [2023-02-16 02:08:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:24,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:08:24,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:08:24,162 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 02:08:24,165 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 02:08:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:08:24,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-16 02:08:24,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:08:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:08:24,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:08:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:08:24,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:08:24,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409408331] [2023-02-16 02:08:24,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:08:24,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879009809] [2023-02-16 02:08:24,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879009809] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:08:24,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:08:24,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-02-16 02:08:24,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240534353] [2023-02-16 02:08:24,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:08:24,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 02:08:24,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:08:24,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 02:08:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-16 02:08:24,425 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:08:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:08:24,549 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-02-16 02:08:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 02:08:24,550 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2023-02-16 02:08:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:08:24,551 INFO L225 Difference]: With dead ends: 39 [2023-02-16 02:08:24,551 INFO L226 Difference]: Without dead ends: 34 [2023-02-16 02:08:24,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:08:24,552 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:08:24,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 88 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:08:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-16 02:08:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 25. [2023-02-16 02:08:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:08:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-02-16 02:08:24,558 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 25 [2023-02-16 02:08:24,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:08:24,558 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-02-16 02:08:24,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:08:24,558 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-02-16 02:08:24,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 02:08:24,559 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:08:24,559 INFO L195 NwaCegarLoop]: trace histogram [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 02:08:24,574 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 02:08:24,763 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 02:08:24,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:08:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:08:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash -126969667, now seen corresponding path program 1 times [2023-02-16 02:08:24,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:08:24,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848882447] [2023-02-16 02:08:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:08:24,785 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:08:24,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928664376] [2023-02-16 02:08:24,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:24,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:08:24,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:08:24,805 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 02:08:24,817 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 02:08:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:08:24,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 02:08:24,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:08:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:08:24,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:08:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:08:24,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:08:24,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848882447] [2023-02-16 02:08:24,962 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:08:24,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928664376] [2023-02-16 02:08:24,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928664376] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:08:24,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:08:24,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-16 02:08:24,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569215514] [2023-02-16 02:08:24,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:08:24,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 02:08:24,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:08:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 02:08:24,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-16 02:08:24,965 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 02:08:25,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:08:25,015 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-02-16 02:08:25,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 02:08:25,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2023-02-16 02:08:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:08:25,018 INFO L225 Difference]: With dead ends: 57 [2023-02-16 02:08:25,018 INFO L226 Difference]: Without dead ends: 52 [2023-02-16 02:08:25,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-16 02:08:25,020 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:08:25,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:08:25,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-16 02:08:25,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-02-16 02:08:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:08:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2023-02-16 02:08:25,043 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 28 [2023-02-16 02:08:25,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:08:25,044 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2023-02-16 02:08:25,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 02:08:25,044 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2023-02-16 02:08:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-16 02:08:25,046 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:08:25,047 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:08:25,067 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 02:08:25,252 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 02:08:25,253 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:08:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:08:25,258 INFO L85 PathProgramCache]: Analyzing trace with hash 972990450, now seen corresponding path program 2 times [2023-02-16 02:08:25,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:08:25,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126529822] [2023-02-16 02:08:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:25,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:08:25,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:08:25,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436930334] [2023-02-16 02:08:25,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:08:25,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:08:25,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:08:25,287 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 02:08:25,289 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 02:08:25,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:08:25,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:08:25,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 02:08:25,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:08:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:08:25,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:08:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-16 02:08:25,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:08:25,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126529822] [2023-02-16 02:08:25,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:08:25,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436930334] [2023-02-16 02:08:25,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436930334] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:08:25,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:08:25,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-16 02:08:25,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738605194] [2023-02-16 02:08:25,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:08:25,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 02:08:25,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:08:25,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 02:08:25,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:08:25,501 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-02-16 02:08:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:08:25,659 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2023-02-16 02:08:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 02:08:25,660 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 55 [2023-02-16 02:08:25,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:08:25,661 INFO L225 Difference]: With dead ends: 111 [2023-02-16 02:08:25,661 INFO L226 Difference]: Without dead ends: 106 [2023-02-16 02:08:25,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-02-16 02:08:25,662 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 57 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:08:25,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 160 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:08:25,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-16 02:08:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-16 02:08:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 02:08:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2023-02-16 02:08:25,680 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 55 [2023-02-16 02:08:25,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:08:25,681 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2023-02-16 02:08:25,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-02-16 02:08:25,681 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2023-02-16 02:08:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-02-16 02:08:25,682 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:08:25,682 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:08:25,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 02:08:25,889 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 02:08:25,889 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:08:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:08:25,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1909967598, now seen corresponding path program 3 times [2023-02-16 02:08:25,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:08:25,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551470828] [2023-02-16 02:08:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:25,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:08:25,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:08:25,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458184654] [2023-02-16 02:08:25,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 02:08:25,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:08:25,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:08:25,900 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 02:08:25,902 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 02:08:26,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-16 02:08:26,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-02-16 02:08:26,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 02:08:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 02:08:26,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 02:08:26,638 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-16 02:08:26,639 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 02:08:26,671 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 02:08:26,841 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 02:08:26,843 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-02-16 02:08:26,846 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 02:08:26,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:08:26 BoogieIcfgContainer [2023-02-16 02:08:26,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 02:08:26,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 02:08:26,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 02:08:26,894 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 02:08:26,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:08:21" (3/4) ... [2023-02-16 02:08:26,895 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-16 02:08:26,955 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 02:08:26,955 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 02:08:26,956 INFO L158 Benchmark]: Toolchain (without parser) took 5610.85ms. Allocated memory was 140.5MB in the beginning and 186.6MB in the end (delta: 46.1MB). Free memory was 105.8MB in the beginning and 120.8MB in the end (delta: -15.1MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2023-02-16 02:08:26,956 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:08:26,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.50ms. Allocated memory is still 140.5MB. Free memory was 105.4MB in the beginning and 94.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:08:26,957 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.64ms. Allocated memory is still 140.5MB. Free memory was 94.9MB in the beginning and 93.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:08:26,957 INFO L158 Benchmark]: Boogie Preprocessor took 27.94ms. Allocated memory is still 140.5MB. Free memory was 93.4MB in the beginning and 92.4MB in the end (delta: 981.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:08:26,957 INFO L158 Benchmark]: RCFGBuilder took 304.34ms. Allocated memory is still 140.5MB. Free memory was 92.4MB in the beginning and 82.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:08:26,958 INFO L158 Benchmark]: TraceAbstraction took 4997.24ms. Allocated memory was 140.5MB in the beginning and 186.6MB in the end (delta: 46.1MB). Free memory was 81.3MB in the beginning and 125.0MB in the end (delta: -43.7MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2023-02-16 02:08:26,958 INFO L158 Benchmark]: Witness Printer took 61.84ms. Allocated memory is still 186.6MB. Free memory was 125.0MB in the beginning and 120.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-16 02:08:26,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.50ms. Allocated memory is still 140.5MB. Free memory was 105.4MB in the beginning and 94.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.64ms. Allocated memory is still 140.5MB. Free memory was 94.9MB in the beginning and 93.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.94ms. Allocated memory is still 140.5MB. Free memory was 93.4MB in the beginning and 92.4MB in the end (delta: 981.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.34ms. Allocated memory is still 140.5MB. Free memory was 92.4MB in the beginning and 82.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4997.24ms. Allocated memory was 140.5MB in the beginning and 186.6MB in the end (delta: 46.1MB). Free memory was 81.3MB in the beginning and 125.0MB in the end (delta: -43.7MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Witness Printer took 61.84ms. Allocated memory is still 186.6MB. Free memory was 125.0MB in the beginning and 120.8MB in the end (delta: 4.2MB). 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 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(cond)=1, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [A=2603, counter=0, R=52] [L28] CALL assume_abort_if_not(A % 2 == 1) VAL [\old(cond)=1, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L28] RET assume_abort_if_not(A % 2 == 1) VAL [A=2603, counter=0, R=52] [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A VAL [A=2603, counter=0, R=52, r=101, u=105, v=1] [L34] EXPR counter++ VAL [A=2603, counter=1, counter++=0, r=101, R=52, u=105, v=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=1, R=52, r=101, u=105, v=1] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=1, R=52, r=101, u=105, v=1] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=1, R=52, r=100, u=105, v=3] [L34] EXPR counter++ VAL [A=2603, counter=2, counter++=1, r=100, R=52, u=105, v=3] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=2, r=100, R=52, u=105, v=3] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=2, R=52, r=100, u=105, v=3] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=2, r=97, R=52, u=105, v=5] [L34] EXPR counter++ VAL [A=2603, counter=3, counter++=2, R=52, r=97, u=105, v=5] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=3, R=52, r=97, u=105, v=5] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=3, r=97, R=52, u=105, v=5] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=3, R=52, r=92, u=105, v=7] [L34] EXPR counter++ VAL [A=2603, counter=4, counter++=3, R=52, r=92, u=105, v=7] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=4, R=52, r=92, u=105, v=7] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=4, r=92, R=52, u=105, v=7] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=4, r=85, R=52, u=105, v=9] [L34] EXPR counter++ VAL [A=2603, counter=5, counter++=4, r=85, R=52, u=105, v=9] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=5, R=52, r=85, u=105, v=9] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=5, R=52, r=85, u=105, v=9] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=5, r=76, R=52, u=105, v=11] [L34] EXPR counter++ VAL [A=2603, counter=6, counter++=5, R=52, r=76, u=105, v=11] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=6] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=6, r=76, R=52, u=105, v=11] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=6, r=76, R=52, u=105, v=11] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=6, R=52, r=65, u=105, v=13] [L34] EXPR counter++ VAL [A=2603, counter=7, counter++=6, r=65, R=52, u=105, v=13] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=7] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=7, R=52, r=65, u=105, v=13] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=7, r=65, R=52, u=105, v=13] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=7, r=52, R=52, u=105, v=15] [L34] EXPR counter++ VAL [A=2603, counter=8, counter++=7, r=52, R=52, u=105, v=15] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=8] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=8, r=52, R=52, u=105, v=15] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=8, r=52, R=52, u=105, v=15] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=8, R=52, r=37, u=105, v=17] [L34] EXPR counter++ VAL [A=2603, counter=9, counter++=8, R=52, r=37, u=105, v=17] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=9] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=9, R=52, r=37, u=105, v=17] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=9, r=37, R=52, u=105, v=17] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=9, R=52, r=20, u=105, v=19] [L34] EXPR counter++ VAL [A=2603, counter=10, counter++=9, r=20, R=52, u=105, v=19] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=10] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=10, r=20, R=52, u=105, v=19] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=10, r=20, R=52, u=105, v=19] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=10, r=1, R=52, u=105, v=21] [L34] EXPR counter++ VAL [A=2603, counter=11, counter++=10, R=52, r=1, u=105, v=21] [L34] COND FALSE !(counter++<10) [L48] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=0, counter=11] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L14] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 101 mSDsluCounter, 491 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 346 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 187 IncrementalHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 145 mSDtfsCounter, 187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=6, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 703 SizeOfPredicates, 16 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 82/188 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 RESULT: Ultimate proved your program to be incorrect! [2023-02-16 02:08:26,993 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE