./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_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 ebfcdae9f2d92c4e39230ecf30ad4ac0897188e9aff6dcbde95509d87ea826ad --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:31:51,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:31:51,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:31:51,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:31:51,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:31:51,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:31:51,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:31:51,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:31:51,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:31:51,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:31:51,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:31:51,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:31:51,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:31:51,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:31:51,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:31:51,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:31:51,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:31:51,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:31:51,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:31:51,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:31:51,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:31:51,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:31:51,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:31:51,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:31:51,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:31:51,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:31:51,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:31:51,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:31:51,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:31:51,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:31:51,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:31:51,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:31:51,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:31:51,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:31:51,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:31:51,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:31:51,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:31:51,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:31:51,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:31:51,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:31:51,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:31:51,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 12:31:51,660 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:31:51,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:31:51,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:31:51,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:31:51,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:31:51,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:31:51,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:31:51,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:31:51,662 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:31:51,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:31:51,663 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:31:51,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 12:31:51,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:31:51,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:31:51,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 12:31:51,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:31:51,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 12:31:51,664 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:31:51,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 12:31:51,664 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:31:51,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 12:31:51,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:31:51,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:31:51,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:31:51,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:31:51,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:31:51,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:31:51,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 12:31:51,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 12:31:51,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 12:31:51,665 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:31:51,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 12:31:51,666 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:31:51,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:31:51,666 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:31:51,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebfcdae9f2d92c4e39230ecf30ad4ac0897188e9aff6dcbde95509d87ea826ad [2023-02-15 12:31:51,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:31:51,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:31:51,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:31:51,874 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:31:51,875 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:31:51,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c [2023-02-15 12:31:52,805 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:31:52,985 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:31:52,986 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c [2023-02-15 12:31:52,990 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5b493044/1f2f98e019234152911fee520ee5f9b4/FLAG12eb24bb6 [2023-02-15 12:31:53,407 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5b493044/1f2f98e019234152911fee520ee5f9b4 [2023-02-15 12:31:53,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:31:53,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:31:53,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:31:53,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:31:53,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:31:53,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613d2c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53, skipping insertion in model container [2023-02-15 12:31:53,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:31:53,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:31:53,514 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c[458,471] [2023-02-15 12:31:53,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:31:53,535 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 12:31:53,542 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c[458,471] [2023-02-15 12:31:53,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:31:53,556 INFO L208 MainTranslator]: Completed translation [2023-02-15 12:31:53,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53 WrapperNode [2023-02-15 12:31:53,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 12:31:53,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 12:31:53,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 12:31:53,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 12:31:53,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,574 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2023-02-15 12:31:53,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 12:31:53,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 12:31:53,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 12:31:53,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 12:31:53,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,586 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 12:31:53,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 12:31:53,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 12:31:53,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 12:31:53,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (1/1) ... [2023-02-15 12:31:53,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:31:53,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:31:53,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 12:31:53,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 12:31:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 12:31:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 12:31:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 12:31:53,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 12:31:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 12:31:53,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 12:31:53,682 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 12:31:53,684 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 12:31:53,835 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 12:31:53,852 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 12:31:53,852 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 12:31:53,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:31:53 BoogieIcfgContainer [2023-02-15 12:31:53,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 12:31:53,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 12:31:53,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 12:31:53,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 12:31:53,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:31:53" (1/3) ... [2023-02-15 12:31:53,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8e8d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:31:53, skipping insertion in model container [2023-02-15 12:31:53,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:31:53" (2/3) ... [2023-02-15 12:31:53,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8e8d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:31:53, skipping insertion in model container [2023-02-15 12:31:53,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:31:53" (3/3) ... [2023-02-15 12:31:53,859 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound10.c [2023-02-15 12:31:53,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 12:31:53,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 12:31:53,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 12:31:53,928 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;@48afa54d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 12:31:53,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 12:31:53,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 12:31:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 12:31:53,935 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:31:53,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:31:53,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:31:53,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:31:53,939 INFO L85 PathProgramCache]: Analyzing trace with hash -579246775, now seen corresponding path program 1 times [2023-02-15 12:31:53,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:31:53,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357058818] [2023-02-15 12:31:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:53,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:31:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:31:54,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:31:54,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357058818] [2023-02-15 12:31:54,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 12:31:54,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596686659] [2023-02-15 12:31:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:54,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:54,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:31:54,073 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:31:54,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 12:31:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:31:54,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 12:31:54,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:31:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:31:54,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:31:54,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596686659] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:31:54,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:31:54,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 12:31:54,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860218770] [2023-02-15 12:31:54,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:31:54,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 12:31:54,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:31:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 12:31:54,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 12:31:54,192 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:31:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:31:54,208 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2023-02-15 12:31:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 12:31:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 12:31:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:31:54,214 INFO L225 Difference]: With dead ends: 37 [2023-02-15 12:31:54,214 INFO L226 Difference]: Without dead ends: 16 [2023-02-15 12:31:54,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 12:31:54,220 INFO L413 NwaCegarLoop]: 23 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, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:31:54,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:31:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-15 12:31:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-02-15 12:31:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 12:31:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-02-15 12:31:54,247 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2023-02-15 12:31:54,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:31:54,247 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-02-15 12:31:54,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:31:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-02-15 12:31:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 12:31:54,248 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:31:54,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:31:54,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 12:31:54,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 12:31:54,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:31:54,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:31:54,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1986551203, now seen corresponding path program 1 times [2023-02-15 12:31:54,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:31:54,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976698033] [2023-02-15 12:31:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:54,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:31:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:31:54,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:31:54,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976698033] [2023-02-15 12:31:54,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 12:31:54,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392193385] [2023-02-15 12:31:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:54,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:54,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:31:54,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:31:54,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 12:31:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:31:54,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 12:31:54,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:31:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:31:54,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:31:54,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392193385] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:31:54,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:31:54,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 12:31:54,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833153372] [2023-02-15 12:31:54,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:31:54,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:31:54,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:31:54,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:31:54,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:31:54,576 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:31:54,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:31:54,587 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-02-15 12:31:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:31:54,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 12:31:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:31:54,588 INFO L225 Difference]: With dead ends: 26 [2023-02-15 12:31:54,588 INFO L226 Difference]: Without dead ends: 18 [2023-02-15 12:31:54,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:31:54,589 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 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 [2023-02-15 12:31:54,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:31:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-15 12:31:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-15 12:31:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 12:31:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-02-15 12:31:54,593 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2023-02-15 12:31:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:31:54,593 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-02-15 12:31:54,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:31:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-02-15 12:31:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 12:31:54,594 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:31:54,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:31:54,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 12:31:54,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 12:31:54,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:31:54,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:31:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1984763743, now seen corresponding path program 1 times [2023-02-15 12:31:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:31:54,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737520305] [2023-02-15 12:31:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:54,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:31:54,823 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:31:54,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116867070] [2023-02-15 12:31:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:54,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:54,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:31:54,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:31:54,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 12:31:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:31:54,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 12:31:54,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:31:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:31:54,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:31:54,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:31:54,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737520305] [2023-02-15 12:31:54,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:31:54,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116867070] [2023-02-15 12:31:54,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116867070] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:31:54,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:31:54,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 12:31:54,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256506248] [2023-02-15 12:31:54,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:31:54,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 12:31:54,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:31:54,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 12:31:54,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 12:31:54,934 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:31:55,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:31:55,035 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2023-02-15 12:31:55,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 12:31:55,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 12:31:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:31:55,036 INFO L225 Difference]: With dead ends: 28 [2023-02-15 12:31:55,036 INFO L226 Difference]: Without dead ends: 24 [2023-02-15 12:31:55,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:31:55,037 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:31:55,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 56 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:31:55,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-15 12:31:55,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-15 12:31:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 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) [2023-02-15 12:31:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-15 12:31:55,042 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 10 [2023-02-15 12:31:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:31:55,042 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-15 12:31:55,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:31:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-15 12:31:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 12:31:55,043 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:31:55,043 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:31:55,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 12:31:55,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:55,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:31:55,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:31:55,244 INFO L85 PathProgramCache]: Analyzing trace with hash -69803837, now seen corresponding path program 1 times [2023-02-15 12:31:55,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:31:55,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927933135] [2023-02-15 12:31:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:55,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:31:55,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:31:55,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36948305] [2023-02-15 12:31:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:55,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:55,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:31:55,253 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:31:55,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 12:31:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:31:55,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 12:31:55,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:31:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:31:55,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:31:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:31:55,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:31:55,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927933135] [2023-02-15 12:31:55,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:31:55,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36948305] [2023-02-15 12:31:55,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36948305] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:31:55,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:31:55,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-15 12:31:55,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436209940] [2023-02-15 12:31:55,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:31:55,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 12:31:55,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:31:55,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 12:31:55,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:31:55,405 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 12:31:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:31:55,543 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2023-02-15 12:31:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 12:31:55,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-15 12:31:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:31:55,545 INFO L225 Difference]: With dead ends: 58 [2023-02-15 12:31:55,545 INFO L226 Difference]: Without dead ends: 50 [2023-02-15 12:31:55,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-15 12:31:55,546 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:31:55,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 96 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:31:55,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-15 12:31:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2023-02-15 12:31:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 12:31:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2023-02-15 12:31:55,554 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 18 [2023-02-15 12:31:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:31:55,554 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2023-02-15 12:31:55,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 12:31:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2023-02-15 12:31:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 12:31:55,555 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:31:55,555 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:31:55,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 12:31:55,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:55,757 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:31:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:31:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash -68016377, now seen corresponding path program 1 times [2023-02-15 12:31:55,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:31:55,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134392627] [2023-02-15 12:31:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:55,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:31:55,770 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:31:55,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152138065] [2023-02-15 12:31:55,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:55,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:31:55,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:31:55,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 12:31:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:31:55,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 12:31:55,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:31:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:31:55,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:31:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 12:31:55,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:31:55,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134392627] [2023-02-15 12:31:55,924 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:31:55,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152138065] [2023-02-15 12:31:55,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152138065] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 12:31:55,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 12:31:55,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-02-15 12:31:55,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376814486] [2023-02-15 12:31:55,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:31:55,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:31:55,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:31:55,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:31:55,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:31:55,926 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 12:31:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:31:55,963 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2023-02-15 12:31:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 12:31:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-15 12:31:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:31:55,964 INFO L225 Difference]: With dead ends: 60 [2023-02-15 12:31:55,964 INFO L226 Difference]: Without dead ends: 52 [2023-02-15 12:31:55,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-15 12:31:55,965 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:31:55,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 40 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:31:55,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-15 12:31:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2023-02-15 12:31:55,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 12:31:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2023-02-15 12:31:55,975 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 18 [2023-02-15 12:31:55,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:31:55,975 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2023-02-15 12:31:55,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 12:31:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2023-02-15 12:31:55,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 12:31:55,976 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:31:55,976 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:31:55,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 12:31:56,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:56,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:31:56,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:31:56,177 INFO L85 PathProgramCache]: Analyzing trace with hash 156635680, now seen corresponding path program 1 times [2023-02-15 12:31:56,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:31:56,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817377512] [2023-02-15 12:31:56,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:56,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:31:56,188 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:31:56,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198934895] [2023-02-15 12:31:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:56,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:31:56,190 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:31:56,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 12:31:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:31:56,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 12:31:56,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:31:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:31:56,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:31:56,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:31:56,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817377512] [2023-02-15 12:31:56,731 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:31:56,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198934895] [2023-02-15 12:31:56,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198934895] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:31:56,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 12:31:56,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-02-15 12:31:56,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949284730] [2023-02-15 12:31:56,731 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 12:31:56,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 12:31:56,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:31:56,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 12:31:56,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-02-15 12:31:56,732 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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) [2023-02-15 12:31:56,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:31:56,853 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-02-15 12:31:56,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 12:31:56,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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) Word has length 29 [2023-02-15 12:31:56,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:31:56,855 INFO L225 Difference]: With dead ends: 51 [2023-02-15 12:31:56,855 INFO L226 Difference]: Without dead ends: 45 [2023-02-15 12:31:56,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-02-15 12:31:56,856 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:31:56,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 79 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:31:56,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-15 12:31:56,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-02-15 12:31:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 12:31:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-02-15 12:31:56,864 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2023-02-15 12:31:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:31:56,865 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-02-15 12:31:56,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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) [2023-02-15 12:31:56,865 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-02-15 12:31:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 12:31:56,865 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:31:56,866 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:31:56,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-15 12:31:57,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:57,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:31:57,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:31:57,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1793229318, now seen corresponding path program 2 times [2023-02-15 12:31:57,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:31:57,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950188594] [2023-02-15 12:31:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:57,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:31:57,078 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:31:57,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496112319] [2023-02-15 12:31:57,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:31:57,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:57,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:31:57,080 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) [2023-02-15 12:31:57,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 12:31:57,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:31:57,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:31:57,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 12:31:57,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:31:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 12:31:57,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:31:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 12:31:57,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:31:57,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950188594] [2023-02-15 12:31:57,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:31:57,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496112319] [2023-02-15 12:31:57,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496112319] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:31:57,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:31:57,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-02-15 12:31:57,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139567723] [2023-02-15 12:31:57,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:31:57,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 12:31:57,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:31:57,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 12:31:57,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-02-15 12:31:57,413 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 12:31:57,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:31:57,859 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2023-02-15 12:31:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 12:31:57,860 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 37 [2023-02-15 12:31:57,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:31:57,860 INFO L225 Difference]: With dead ends: 62 [2023-02-15 12:31:57,860 INFO L226 Difference]: Without dead ends: 54 [2023-02-15 12:31:57,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2023-02-15 12:31:57,861 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 48 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:31:57,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 187 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:31:57,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-15 12:31:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2023-02-15 12:31:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 12:31:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2023-02-15 12:31:57,874 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 37 [2023-02-15 12:31:57,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:31:57,874 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2023-02-15 12:31:57,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 12:31:57,874 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2023-02-15 12:31:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 12:31:57,876 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:31:57,876 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:31:57,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-15 12:31:58,081 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 [2023-02-15 12:31:58,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:31:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:31:58,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1854611729, now seen corresponding path program 1 times [2023-02-15 12:31:58,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:31:58,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682391806] [2023-02-15 12:31:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:58,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:31:58,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:31:58,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853008755] [2023-02-15 12:31:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:58,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:58,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:31:58,090 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:31:58,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 12:31:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:31:58,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 12:31:58,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:31:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 12:31:58,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:31:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-15 12:31:58,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:31:58,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682391806] [2023-02-15 12:31:58,243 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:31:58,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853008755] [2023-02-15 12:31:58,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853008755] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:31:58,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:31:58,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-15 12:31:58,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906314926] [2023-02-15 12:31:58,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:31:58,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 12:31:58,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:31:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 12:31:58,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-15 12:31:58,246 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-15 12:31:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:31:58,382 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2023-02-15 12:31:58,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 12:31:58,383 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 47 [2023-02-15 12:31:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:31:58,386 INFO L225 Difference]: With dead ends: 126 [2023-02-15 12:31:58,386 INFO L226 Difference]: Without dead ends: 116 [2023-02-15 12:31:58,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-02-15 12:31:58,387 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 68 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:31:58,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 122 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:31:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-15 12:31:58,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 96. [2023-02-15 12:31:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 73 states have internal predecessors, (75), 16 states have call successors, (16), 11 states have call predecessors, (16), 10 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 12:31:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2023-02-15 12:31:58,418 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 47 [2023-02-15 12:31:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:31:58,418 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2023-02-15 12:31:58,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-15 12:31:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2023-02-15 12:31:58,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-15 12:31:58,418 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:31:58,419 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:31:58,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 12:31:58,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 12:31:58,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:31:58,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:31:58,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1021371784, now seen corresponding path program 3 times [2023-02-15 12:31:58,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:31:58,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106890674] [2023-02-15 12:31:58,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:31:58,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:31:58,632 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:31:58,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860646188] [2023-02-15 12:31:58,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:31:58,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:31:58,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:31:58,640 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:31:58,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 12:31:58,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-15 12:31:58,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:31:58,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 12:31:58,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:31:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 14 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-02-15 12:31:58,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:31:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 14 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-02-15 12:31:59,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:31:59,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106890674] [2023-02-15 12:31:59,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 12:31:59,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860646188] [2023-02-15 12:31:59,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860646188] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:31:59,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:31:59,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2023-02-15 12:31:59,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076519429] [2023-02-15 12:31:59,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:31:59,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 12:31:59,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:31:59,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 12:31:59,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-02-15 12:31:59,275 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 22 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-15 12:32:00,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:32:00,286 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2023-02-15 12:32:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 12:32:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 61 [2023-02-15 12:32:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:32:00,287 INFO L225 Difference]: With dead ends: 119 [2023-02-15 12:32:00,287 INFO L226 Difference]: Without dead ends: 108 [2023-02-15 12:32:00,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=332, Invalid=1150, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 12:32:00,288 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 108 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:32:00,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 290 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:32:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-02-15 12:32:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2023-02-15 12:32:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 76 states have internal predecessors, (80), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-15 12:32:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2023-02-15 12:32:00,303 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 61 [2023-02-15 12:32:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:32:00,303 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2023-02-15 12:32:00,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-15 12:32:00,303 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2023-02-15 12:32:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-15 12:32:00,313 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:32:00,313 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:32:00,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 12:32:00,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:32:00,518 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:32:00,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:32:00,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1956819211, now seen corresponding path program 2 times [2023-02-15 12:32:00,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:32:00,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262007991] [2023-02-15 12:32:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:32:00,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:32:00,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 12:32:00,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796476811] [2023-02-15 12:32:00,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:32:00,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:32:00,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:32:00,528 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 12:32:00,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 12:32:01,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:32:01,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-02-15 12:32:01,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 12:32:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 12:32:01,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 12:32:01,744 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 12:32:01,745 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 12:32:01,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 12:32:01,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 12:32:01,963 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2023-02-15 12:32:01,965 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 12:32:01,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:32:01 BoogieIcfgContainer [2023-02-15 12:32:01,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 12:32:01,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 12:32:01,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 12:32:01,999 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 12:32:01,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:31:53" (3/4) ... [2023-02-15 12:32:02,000 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-15 12:32:02,037 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 12:32:02,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 12:32:02,037 INFO L158 Benchmark]: Toolchain (without parser) took 8625.96ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 83.7MB in the beginning and 110.6MB in the end (delta: -26.9MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2023-02-15 12:32:02,037 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory is still 42.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:32:02,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.22ms. Allocated memory is still 117.4MB. Free memory was 83.7MB in the beginning and 72.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:32:02,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.88ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 71.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 12:32:02,038 INFO L158 Benchmark]: Boogie Preprocessor took 12.20ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 70.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:32:02,038 INFO L158 Benchmark]: RCFGBuilder took 266.09ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 59.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:32:02,038 INFO L158 Benchmark]: TraceAbstraction took 8143.05ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 59.3MB in the beginning and 115.8MB in the end (delta: -56.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:32:02,038 INFO L158 Benchmark]: Witness Printer took 38.23ms. Allocated memory is still 153.1MB. Free memory was 115.8MB in the beginning and 110.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 12:32:02,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory is still 42.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 143.22ms. Allocated memory is still 117.4MB. Free memory was 83.7MB in the beginning and 72.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.88ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 71.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.20ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 70.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 266.09ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 59.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8143.05ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 59.3MB in the beginning and 115.8MB in the end (delta: -56.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 38.23ms. Allocated memory is still 153.1MB. Free memory was 115.8MB in the beginning and 110.6MB in the end (delta: 5.2MB). 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: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [c=0, counter=0, k=11, x=0, y=0] [L28] EXPR counter++ VAL [c=0, counter=1, counter++=0, k=11, x=0, y=0] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=0, counter=1, k=11, x=0, y=0] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=1, counter=1, k=11, x=1, y=1] [L28] EXPR counter++ VAL [c=1, counter=2, counter++=1, k=11, x=1, y=1] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=2] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=1, counter=2, k=11, x=1, y=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=2, counter=2, k=11, x=33, y=2] [L28] EXPR counter++ VAL [c=2, counter=3, counter++=2, k=11, x=33, y=2] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=3] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=2, counter=3, k=11, x=33, y=2] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=3, counter=3, k=11, x=276, y=3] [L28] EXPR counter++ VAL [c=3, counter=4, counter++=3, k=11, x=276, y=3] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=4] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=3, counter=4, k=11, x=276, y=3] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=4, counter=4, k=11, x=1300, y=4] [L28] EXPR counter++ VAL [c=4, counter=5, counter++=4, k=11, x=1300, y=4] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=5] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=4, counter=5, k=11, x=1300, y=4] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=5, counter=5, k=11, x=4425, y=5] [L28] EXPR counter++ VAL [c=5, counter=6, counter++=5, k=11, x=4425, y=5] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=6] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=5, counter=6, k=11, x=4425, y=5] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=6, counter=6, k=11, x=12201, y=6] [L28] EXPR counter++ VAL [c=6, counter=7, counter++=6, k=11, x=12201, y=6] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=7] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=6, counter=7, k=11, x=12201, y=6] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=7, counter=7, k=11, x=29008, y=7] [L28] EXPR counter++ VAL [c=7, counter=8, counter++=7, k=11, x=29008, y=7] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=8] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=7, counter=8, k=11, x=29008, y=7] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=8, counter=8, k=11, x=61776, y=8] [L28] EXPR counter++ VAL [c=8, counter=9, counter++=8, k=11, x=61776, y=8] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=9] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=8, counter=9, k=11, x=61776, y=8] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=9, counter=9, k=11, x=120825, y=9] [L28] EXPR counter++ VAL [c=9, counter=10, counter++=9, k=11, x=120825, y=9] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=10] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=9, counter=10, k=11, x=120825, y=9] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=10, counter=10, k=11, x=220825, y=10] [L28] EXPR counter++ VAL [c=10, counter=11, counter++=10, k=11, x=220825, y=10] [L28] COND FALSE !(counter++<10) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=11] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L39] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=10, counter=11, k=11, x=220825, y=10] [L40] CALL __VERIFIER_assert(k*y == y*y) VAL [\old(cond)=0, counter=11] [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L12] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.0s, OverallIterations: 10, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 293 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 290 mSDsluCounter, 938 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 722 mSDsCounter, 151 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 761 IncrementalHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 151 mSolverCounterUnsat, 216 mSDtfsCounter, 761 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 472 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=9, InterpolantAutomatonStates: 96, 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, 9 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 406 ConstructedInterpolants, 0 QuantifiedInterpolants, 2391 SizeOfPredicates, 30 NumberOfNonLiveVariables, 842 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 364/608 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! [2023-02-15 12:32:02,054 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