./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 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/cohencu-ll_valuebound20.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 d3c61dee0c4c48de96844df391dc470a843cae078bb175116ed4a6b789669168 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 11:53:07,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 11:53:07,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 11:53:07,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 11:53:07,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 11:53:07,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 11:53:07,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 11:53:07,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 11:53:07,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 11:53:07,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 11:53:07,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 11:53:07,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 11:53:07,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 11:53:07,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 11:53:07,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 11:53:07,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 11:53:07,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 11:53:07,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 11:53:07,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 11:53:07,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 11:53:07,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 11:53:07,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 11:53:07,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 11:53:07,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 11:53:07,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 11:53:07,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 11:53:07,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 11:53:07,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 11:53:07,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 11:53:07,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 11:53:07,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 11:53:07,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 11:53:07,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 11:53:07,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 11:53:07,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 11:53:07,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 11:53:07,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 11:53:07,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 11:53:07,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 11:53:07,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 11:53:07,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 11:53:07,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 11:53:07,544 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 11:53:07,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 11:53:07,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 11:53:07,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 11:53:07,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 11:53:07,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 11:53:07,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 11:53:07,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 11:53:07,552 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 11:53:07,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 11:53:07,553 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 11:53:07,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 11:53:07,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 11:53:07,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 11:53:07,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 11:53:07,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 11:53:07,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 11:53:07,554 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 11:53:07,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 11:53:07,554 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 11:53:07,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 11:53:07,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 11:53:07,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 11:53:07,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 11:53:07,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:53:07,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 11:53:07,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 11:53:07,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 11:53:07,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 11:53:07,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 11:53:07,556 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 11:53:07,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 11:53:07,557 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 11:53:07,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 11:53:07,557 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 11:53:07,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3c61dee0c4c48de96844df391dc470a843cae078bb175116ed4a6b789669168 [2023-02-14 11:53:07,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 11:53:07,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 11:53:07,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 11:53:07,772 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 11:53:07,772 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 11:53:07,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2023-02-14 11:53:08,734 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 11:53:08,857 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 11:53:08,858 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2023-02-14 11:53:08,864 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3cb878fe/155860d6d8244ce5a53621a3c063f176/FLAG58409cf8e [2023-02-14 11:53:08,873 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3cb878fe/155860d6d8244ce5a53621a3c063f176 [2023-02-14 11:53:08,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 11:53:08,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 11:53:08,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 11:53:08,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 11:53:08,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 11:53:08,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:53:08" (1/1) ... [2023-02-14 11:53:08,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6532e3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:08, skipping insertion in model container [2023-02-14 11:53:08,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:53:08" (1/1) ... [2023-02-14 11:53:08,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 11:53:08,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 11:53:09,002 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/cohencu-ll_valuebound20.c[588,601] [2023-02-14 11:53:09,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:53:09,041 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 11:53:09,050 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/cohencu-ll_valuebound20.c[588,601] [2023-02-14 11:53:09,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:53:09,079 INFO L208 MainTranslator]: Completed translation [2023-02-14 11:53:09,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09 WrapperNode [2023-02-14 11:53:09,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 11:53:09,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 11:53:09,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 11:53:09,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 11:53:09,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,114 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-02-14 11:53:09,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 11:53:09,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 11:53:09,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 11:53:09,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 11:53:09,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,139 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 11:53:09,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 11:53:09,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 11:53:09,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 11:53:09,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (1/1) ... [2023-02-14 11:53:09,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:53:09,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:09,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 11:53:09,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 11:53:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 11:53:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 11:53:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 11:53:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 11:53:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-14 11:53:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-14 11:53:09,230 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 11:53:09,232 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 11:53:09,355 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 11:53:09,364 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 11:53:09,364 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 11:53:09,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:53:09 BoogieIcfgContainer [2023-02-14 11:53:09,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 11:53:09,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 11:53:09,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 11:53:09,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 11:53:09,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:53:08" (1/3) ... [2023-02-14 11:53:09,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346ac068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:53:09, skipping insertion in model container [2023-02-14 11:53:09,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:53:09" (2/3) ... [2023-02-14 11:53:09,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346ac068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:53:09, skipping insertion in model container [2023-02-14 11:53:09,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:53:09" (3/3) ... [2023-02-14 11:53:09,382 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound20.c [2023-02-14 11:53:09,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 11:53:09,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 11:53:09,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 11:53:09,443 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;@242003d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 11:53:09,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 11:53:09,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-14 11:53:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 11:53:09,454 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:09,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:09,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:09,459 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2023-02-14 11:53:09,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:09,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101093261] [2023-02-14 11:53:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:09,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:53:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:53:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:09,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101093261] [2023-02-14 11:53:09,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101093261] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:53:09,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:53:09,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 11:53:09,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430126288] [2023-02-14 11:53:09,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:53:09,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 11:53:09,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:09,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 11:53:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 11:53:09,628 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:53:09,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:09,649 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2023-02-14 11:53:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 11:53:09,651 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-14 11:53:09,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:09,655 INFO L225 Difference]: With dead ends: 51 [2023-02-14 11:53:09,655 INFO L226 Difference]: Without dead ends: 23 [2023-02-14 11:53:09,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 11:53:09,661 INFO L413 NwaCegarLoop]: 37 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, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:09,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:53:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-14 11:53:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-14 11:53:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-14 11:53:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2023-02-14 11:53:09,685 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2023-02-14 11:53:09,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:09,685 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2023-02-14 11:53:09,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:53:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2023-02-14 11:53:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 11:53:09,686 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:09,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:09,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 11:53:09,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2023-02-14 11:53:09,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:09,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535075496] [2023-02-14 11:53:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:09,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:53:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:53:09,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:09,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535075496] [2023-02-14 11:53:09,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535075496] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:53:09,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:53:09,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 11:53:09,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989607714] [2023-02-14 11:53:09,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:53:09,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 11:53:09,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:09,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 11:53:09,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 11:53:09,843 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:53:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:09,909 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2023-02-14 11:53:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 11:53:09,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-14 11:53:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:09,910 INFO L225 Difference]: With dead ends: 29 [2023-02-14 11:53:09,910 INFO L226 Difference]: Without dead ends: 27 [2023-02-14 11:53:09,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 11:53:09,911 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:09,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:53:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-14 11:53:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-14 11:53:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-14 11:53:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-02-14 11:53:09,929 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2023-02-14 11:53:09,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:09,929 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-02-14 11:53:09,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:53:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-02-14 11:53:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 11:53:09,931 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:09,931 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:09,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 11:53:09,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:09,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2023-02-14 11:53:09,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:09,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349216050] [2023-02-14 11:53:09,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:09,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:09,942 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:09,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172024505] [2023-02-14 11:53:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:09,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:09,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:09,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:53:09,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 11:53:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:53:09,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-14 11:53:09,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:53:10,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:53:10,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:10,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349216050] [2023-02-14 11:53:10,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:10,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172024505] [2023-02-14 11:53:10,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172024505] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:53:10,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:53:10,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-14 11:53:10,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319255429] [2023-02-14 11:53:10,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:10,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 11:53:10,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:10,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 11:53:10,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-14 11:53:10,273 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 11:53:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:10,563 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2023-02-14 11:53:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 11:53:10,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-02-14 11:53:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:10,566 INFO L225 Difference]: With dead ends: 52 [2023-02-14 11:53:10,566 INFO L226 Difference]: Without dead ends: 50 [2023-02-14 11:53:10,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-14 11:53:10,567 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:10,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 60 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 11:53:10,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-14 11:53:10,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2023-02-14 11:53:10,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-14 11:53:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2023-02-14 11:53:10,582 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 14 [2023-02-14 11:53:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:10,582 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2023-02-14 11:53:10,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 11:53:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2023-02-14 11:53:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 11:53:10,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:10,583 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:10,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 11:53:10,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:10,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:10,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2023-02-14 11:53:10,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:10,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535819492] [2023-02-14 11:53:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:10,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:10,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:10,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076907111] [2023-02-14 11:53:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:10,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:10,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:10,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:53:10,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 11:53:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:53:10,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-14 11:53:10,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 11:53:10,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 11:53:11,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:11,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535819492] [2023-02-14 11:53:11,012 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:11,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076907111] [2023-02-14 11:53:11,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076907111] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:53:11,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:53:11,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-14 11:53:11,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267589267] [2023-02-14 11:53:11,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:11,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 11:53:11,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:11,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 11:53:11,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-14 11:53:11,020 INFO L87 Difference]: Start difference. First operand 47 states and 65 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-14 11:53:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:11,208 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2023-02-14 11:53:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 11:53:11,208 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-02-14 11:53:11,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:11,209 INFO L225 Difference]: With dead ends: 54 [2023-02-14 11:53:11,209 INFO L226 Difference]: Without dead ends: 52 [2023-02-14 11:53:11,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-14 11:53:11,210 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:11,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 47 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 11:53:11,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-14 11:53:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2023-02-14 11:53:11,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-14 11:53:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2023-02-14 11:53:11,220 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 19 [2023-02-14 11:53:11,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:11,220 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2023-02-14 11:53:11,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-14 11:53:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2023-02-14 11:53:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 11:53:11,221 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:11,221 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:11,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 11:53:11,424 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,SelfDestructingSolverStorable3 [2023-02-14 11:53:11,425 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2023-02-14 11:53:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:11,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148613273] [2023-02-14 11:53:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:11,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:11,432 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:11,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862786993] [2023-02-14 11:53:11,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:11,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:11,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:11,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:53:11,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 11:53:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:53:11,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-14 11:53:11,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-14 11:53:11,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-14 11:53:11,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:11,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148613273] [2023-02-14 11:53:11,704 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:11,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862786993] [2023-02-14 11:53:11,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862786993] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:53:11,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:53:11,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-14 11:53:11,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091004576] [2023-02-14 11:53:11,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:11,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 11:53:11,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:11,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 11:53:11,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-14 11:53:11,706 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-14 11:53:12,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:12,371 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2023-02-14 11:53:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 11:53:12,372 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2023-02-14 11:53:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:12,372 INFO L225 Difference]: With dead ends: 67 [2023-02-14 11:53:12,373 INFO L226 Difference]: Without dead ends: 58 [2023-02-14 11:53:12,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-14 11:53:12,373 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:12,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 60 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-14 11:53:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-14 11:53:12,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-02-14 11:53:12,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-14 11:53:12,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2023-02-14 11:53:12,387 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 24 [2023-02-14 11:53:12,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:12,387 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2023-02-14 11:53:12,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-14 11:53:12,387 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2023-02-14 11:53:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-14 11:53:12,389 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:12,389 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:12,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 11:53:12,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:12,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:12,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:12,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 1 times [2023-02-14 11:53:12,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:12,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016783739] [2023-02-14 11:53:12,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:12,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:12,602 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:12,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629053931] [2023-02-14 11:53:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:12,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:12,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:53:12,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 11:53:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:53:12,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-14 11:53:12,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-14 11:53:12,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-14 11:53:12,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:12,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016783739] [2023-02-14 11:53:12,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:12,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629053931] [2023-02-14 11:53:12,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629053931] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:53:12,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:53:12,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-14 11:53:12,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380420562] [2023-02-14 11:53:12,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:12,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-14 11:53:12,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-14 11:53:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-14 11:53:12,872 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-02-14 11:53:15,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 11:53:15,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:15,648 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2023-02-14 11:53:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 11:53:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 46 [2023-02-14 11:53:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:15,649 INFO L225 Difference]: With dead ends: 82 [2023-02-14 11:53:15,649 INFO L226 Difference]: Without dead ends: 80 [2023-02-14 11:53:15,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-02-14 11:53:15,650 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:15,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 62 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 281 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2023-02-14 11:53:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-14 11:53:15,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2023-02-14 11:53:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 45 states have internal predecessors, (45), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-14 11:53:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2023-02-14 11:53:15,666 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 46 [2023-02-14 11:53:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:15,667 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2023-02-14 11:53:15,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-02-14 11:53:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2023-02-14 11:53:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-14 11:53:15,668 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:15,668 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:15,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-14 11:53:15,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:15,873 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:15,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1498221753, now seen corresponding path program 2 times [2023-02-14 11:53:15,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:15,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744984191] [2023-02-14 11:53:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:15,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:15,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912407838] [2023-02-14 11:53:15,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 11:53:15,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:15,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:15,889 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:53:15,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 11:53:15,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 11:53:15,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 11:53:15,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-14 11:53:15,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-02-14 11:53:16,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-02-14 11:53:16,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:16,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744984191] [2023-02-14 11:53:16,102 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:16,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912407838] [2023-02-14 11:53:16,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912407838] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:53:16,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:53:16,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-14 11:53:16,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320017795] [2023-02-14 11:53:16,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:16,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 11:53:16,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:16,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 11:53:16,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-14 11:53:16,108 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-02-14 11:53:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:16,753 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2023-02-14 11:53:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 11:53:16,754 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 56 [2023-02-14 11:53:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:16,755 INFO L225 Difference]: With dead ends: 86 [2023-02-14 11:53:16,755 INFO L226 Difference]: Without dead ends: 81 [2023-02-14 11:53:16,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-14 11:53:16,755 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:16,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 88 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-14 11:53:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-14 11:53:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-02-14 11:53:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 48 states have internal predecessors, (48), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-14 11:53:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2023-02-14 11:53:16,771 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 56 [2023-02-14 11:53:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:16,771 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2023-02-14 11:53:16,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-02-14 11:53:16,771 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2023-02-14 11:53:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 11:53:16,772 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:16,772 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:16,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 11:53:16,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:16,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:16,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2023-02-14 11:53:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:16,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676882210] [2023-02-14 11:53:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:16,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:16,998 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:16,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239400328] [2023-02-14 11:53:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:16,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:16,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:17,000 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) [2023-02-14 11:53:17,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 11:53:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:53:17,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-14 11:53:17,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:17,254 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-14 11:53:17,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-14 11:53:17,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:17,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676882210] [2023-02-14 11:53:17,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:17,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239400328] [2023-02-14 11:53:17,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239400328] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:53:17,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:53:17,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-02-14 11:53:17,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786364411] [2023-02-14 11:53:17,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:17,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-14 11:53:17,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-14 11:53:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-02-14 11:53:17,385 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-14 11:53:17,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:17,909 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2023-02-14 11:53:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 11:53:17,909 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2023-02-14 11:53:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:17,910 INFO L225 Difference]: With dead ends: 95 [2023-02-14 11:53:17,910 INFO L226 Difference]: Without dead ends: 93 [2023-02-14 11:53:17,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-02-14 11:53:17,911 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:17,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 150 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 11:53:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-14 11:53:17,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2023-02-14 11:53:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 52 states have internal predecessors, (53), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-02-14 11:53:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2023-02-14 11:53:17,938 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 67 [2023-02-14 11:53:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:17,939 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2023-02-14 11:53:17,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-14 11:53:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2023-02-14 11:53:17,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-14 11:53:17,941 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:17,941 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:17,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 11:53:18,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:18,148 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:18,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2023-02-14 11:53:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:18,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469529221] [2023-02-14 11:53:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:18,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:18,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128507065] [2023-02-14 11:53:18,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:18,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:18,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:18,159 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) [2023-02-14 11:53:18,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 11:53:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:53:18,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-14 11:53:18,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-02-14 11:53:18,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:18,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:18,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469529221] [2023-02-14 11:53:18,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:18,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128507065] [2023-02-14 11:53:18,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128507065] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:53:18,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-14 11:53:18,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-02-14 11:53:18,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362614583] [2023-02-14 11:53:18,488 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:18,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 11:53:18,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 11:53:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-02-14 11:53:18,491 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-14 11:53:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:18,687 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2023-02-14 11:53:18,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 11:53:18,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 72 [2023-02-14 11:53:18,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:18,689 INFO L225 Difference]: With dead ends: 97 [2023-02-14 11:53:18,689 INFO L226 Difference]: Without dead ends: 88 [2023-02-14 11:53:18,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-02-14 11:53:18,690 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:18,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 95 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 11:53:18,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-14 11:53:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-14 11:53:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-14 11:53:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2023-02-14 11:53:18,717 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 72 [2023-02-14 11:53:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:18,717 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2023-02-14 11:53:18,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-14 11:53:18,718 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2023-02-14 11:53:18,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-02-14 11:53:18,721 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:18,721 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:18,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 11:53:18,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:18,929 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash -322800313, now seen corresponding path program 3 times [2023-02-14 11:53:18,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:18,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755302989] [2023-02-14 11:53:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:18,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:18,936 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:18,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014260383] [2023-02-14 11:53:18,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 11:53:18,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:18,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:18,938 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) [2023-02-14 11:53:18,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 11:53:18,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-14 11:53:18,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 11:53:18,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-14 11:53:18,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-14 11:53:19,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-14 11:53:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:19,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755302989] [2023-02-14 11:53:19,501 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:19,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014260383] [2023-02-14 11:53:19,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014260383] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:53:19,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:53:19,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-14 11:53:19,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581257418] [2023-02-14 11:53:19,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:19,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 11:53:19,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:19,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 11:53:19,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-14 11:53:19,503 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-14 11:53:21,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:21,779 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2023-02-14 11:53:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 11:53:21,780 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 78 [2023-02-14 11:53:21,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:21,781 INFO L225 Difference]: With dead ends: 110 [2023-02-14 11:53:21,781 INFO L226 Difference]: Without dead ends: 107 [2023-02-14 11:53:21,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-02-14 11:53:21,782 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:21,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 84 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-14 11:53:21,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-14 11:53:21,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2023-02-14 11:53:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 63 states have internal predecessors, (64), 27 states have call successors, (27), 16 states have call predecessors, (27), 16 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-14 11:53:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2023-02-14 11:53:21,814 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 78 [2023-02-14 11:53:21,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:21,814 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2023-02-14 11:53:21,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-14 11:53:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2023-02-14 11:53:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-02-14 11:53:21,815 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:21,815 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:21,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-14 11:53:22,019 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,SelfDestructingSolverStorable9 [2023-02-14 11:53:22,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:22,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash -674604307, now seen corresponding path program 2 times [2023-02-14 11:53:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:22,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923851592] [2023-02-14 11:53:22,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:22,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:22,028 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:22,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548378586] [2023-02-14 11:53:22,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 11:53:22,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:22,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:22,037 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) [2023-02-14 11:53:22,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-14 11:53:22,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 11:53:22,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 11:53:22,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-14 11:53:22,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 78 proven. 25 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-02-14 11:53:22,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:22,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:22,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923851592] [2023-02-14 11:53:22,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:22,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548378586] [2023-02-14 11:53:22,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548378586] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:53:22,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-14 11:53:22,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-02-14 11:53:22,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669894743] [2023-02-14 11:53:22,990 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:22,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-14 11:53:22,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-14 11:53:22,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-02-14 11:53:22,991 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-02-14 11:53:23,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:23,226 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2023-02-14 11:53:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 11:53:23,227 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 99 [2023-02-14 11:53:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:23,227 INFO L225 Difference]: With dead ends: 111 [2023-02-14 11:53:23,227 INFO L226 Difference]: Without dead ends: 98 [2023-02-14 11:53:23,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-02-14 11:53:23,228 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:23,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 79 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 11:53:23,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-14 11:53:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-02-14 11:53:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 24 states have call successors, (24), 15 states have call predecessors, (24), 15 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-14 11:53:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2023-02-14 11:53:23,243 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 99 [2023-02-14 11:53:23,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:23,243 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2023-02-14 11:53:23,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-02-14 11:53:23,244 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2023-02-14 11:53:23,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-14 11:53:23,244 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:23,245 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:23,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-14 11:53:23,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:23,445 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:23,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 2 times [2023-02-14 11:53:23,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:23,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722007772] [2023-02-14 11:53:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:23,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:23,452 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:23,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555770359] [2023-02-14 11:53:23,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 11:53:23,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:23,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:23,454 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) [2023-02-14 11:53:23,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-14 11:53:23,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 11:53:23,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 11:53:23,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-14 11:53:23,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 101 proven. 43 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-02-14 11:53:23,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2023-02-14 11:53:25,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:25,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722007772] [2023-02-14 11:53:25,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:25,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555770359] [2023-02-14 11:53:25,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555770359] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:53:25,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:53:25,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2023-02-14 11:53:25,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088172686] [2023-02-14 11:53:25,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:25,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-14 11:53:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-14 11:53:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-02-14 11:53:25,780 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-02-14 11:53:29,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:29,997 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2023-02-14 11:53:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-14 11:53:29,997 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 121 [2023-02-14 11:53:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:29,998 INFO L225 Difference]: With dead ends: 127 [2023-02-14 11:53:29,998 INFO L226 Difference]: Without dead ends: 125 [2023-02-14 11:53:29,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-02-14 11:53:29,999 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:29,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 119 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-02-14 11:53:30,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-14 11:53:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2023-02-14 11:53:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 24 states have call successors, (24), 17 states have call predecessors, (24), 17 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-14 11:53:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2023-02-14 11:53:30,024 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 121 [2023-02-14 11:53:30,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:30,024 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2023-02-14 11:53:30,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-02-14 11:53:30,025 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2023-02-14 11:53:30,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-02-14 11:53:30,026 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:30,026 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:30,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-14 11:53:30,233 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,SelfDestructingSolverStorable11 [2023-02-14 11:53:30,233 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:30,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:30,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 3 times [2023-02-14 11:53:30,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:30,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425462825] [2023-02-14 11:53:30,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:30,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:30,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:30,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170098422] [2023-02-14 11:53:30,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 11:53:30,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:30,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:30,243 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:53:30,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-14 11:53:30,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-14 11:53:30,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 11:53:30,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-14 11:53:30,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 234 proven. 61 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-02-14 11:53:41,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 148 proven. 39 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2023-02-14 11:53:49,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:49,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425462825] [2023-02-14 11:53:49,061 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:49,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170098422] [2023-02-14 11:53:49,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170098422] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:53:49,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:53:49,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2023-02-14 11:53:49,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064584521] [2023-02-14 11:53:49,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:49,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-14 11:53:49,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:49,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-14 11:53:49,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=247, Unknown=2, NotChecked=0, Total=306 [2023-02-14 11:53:49,063 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand has 18 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2023-02-14 11:53:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:53:50,837 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2023-02-14 11:53:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 11:53:50,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 126 [2023-02-14 11:53:50,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:53:50,839 INFO L225 Difference]: With dead ends: 112 [2023-02-14 11:53:50,839 INFO L226 Difference]: Without dead ends: 108 [2023-02-14 11:53:50,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=115, Invalid=435, Unknown=2, NotChecked=0, Total=552 [2023-02-14 11:53:50,839 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 26 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-14 11:53:50,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 53 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-14 11:53:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-02-14 11:53:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-02-14 11:53:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 24 states have call successors, (24), 18 states have call predecessors, (24), 17 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-14 11:53:50,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 114 transitions. [2023-02-14 11:53:50,862 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 114 transitions. Word has length 126 [2023-02-14 11:53:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:53:50,862 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 114 transitions. [2023-02-14 11:53:50,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2023-02-14 11:53:50,863 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 114 transitions. [2023-02-14 11:53:50,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-02-14 11:53:50,864 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:53:50,864 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:53:50,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-14 11:53:51,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-14 11:53:51,073 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:53:51,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:53:51,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1520954085, now seen corresponding path program 1 times [2023-02-14 11:53:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:53:51,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737322041] [2023-02-14 11:53:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:51,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:53:51,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 11:53:51,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296414289] [2023-02-14 11:53:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:53:51,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:53:51,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:53:51,084 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:53:51,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-14 11:53:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:53:51,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-14 11:53:51,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:53:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-02-14 11:53:51,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:53:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-02-14 11:53:55,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:53:55,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737322041] [2023-02-14 11:53:55,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 11:53:55,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296414289] [2023-02-14 11:53:55,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296414289] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:53:55,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:53:55,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2023-02-14 11:53:55,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747669792] [2023-02-14 11:53:55,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:53:55,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-14 11:53:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:53:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-14 11:53:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=240, Unknown=1, NotChecked=0, Total=306 [2023-02-14 11:53:55,359 INFO L87 Difference]: Start difference. First operand 108 states and 114 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 8 states have call predecessors, (46), 10 states have call successors, (46) [2023-02-14 11:54:04,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 11:54:06,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 11:54:08,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 11:54:11,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 11:54:13,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 11:54:15,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 11:54:19,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 11:54:21,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 11:54:24,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 11:54:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:54:30,952 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2023-02-14 11:54:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 11:54:30,953 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 8 states have call predecessors, (46), 10 states have call successors, (46) Word has length 131 [2023-02-14 11:54:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:54:30,953 INFO L225 Difference]: With dead ends: 119 [2023-02-14 11:54:30,953 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 11:54:30,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 245 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=92, Invalid=325, Unknown=3, NotChecked=0, Total=420 [2023-02-14 11:54:30,954 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 32 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2023-02-14 11:54:30,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 123 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 632 Invalid, 9 Unknown, 0 Unchecked, 21.4s Time] [2023-02-14 11:54:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 11:54:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 11:54:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:54:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 11:54:30,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 131 [2023-02-14 11:54:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:54:30,955 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 11:54:30,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 8 states have call predecessors, (46), 10 states have call successors, (46) [2023-02-14 11:54:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 11:54:30,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 11:54:30,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 11:54:30,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-14 11:54:31,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-14 11:54:31,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 11:54:44,593 WARN L233 SmtUtils]: Spent 13.24s on a formula simplification. DAG size of input: 189 DAG size of output: 69 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-14 11:54:55,781 WARN L233 SmtUtils]: Spent 10.30s on a formula simplification. DAG size of input: 178 DAG size of output: 56 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-14 11:55:24,773 WARN L233 SmtUtils]: Spent 28.99s on a formula simplification. DAG size of input: 178 DAG size of output: 48 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-14 11:56:18,279 WARN L233 SmtUtils]: Spent 53.17s on a formula simplification. DAG size of input: 178 DAG size of output: 69 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-14 11:56:42,769 WARN L233 SmtUtils]: Spent 23.60s on a formula simplification. DAG size of input: 170 DAG size of output: 86 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-14 11:57:15,035 WARN L233 SmtUtils]: Spent 32.26s on a formula simplification. DAG size of input: 170 DAG size of output: 79 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-14 11:57:25,850 WARN L233 SmtUtils]: Spent 10.81s on a formula simplification. DAG size of input: 178 DAG size of output: 56 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-14 11:57:25,853 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 11:57:25,853 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse2 (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6)) (.cse3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= .cse0 (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ .cse1 (* |ULTIMATE.start_main_~y~0#1| 18)) (+ (* |ULTIMATE.start_main_~n~0#1| 12) 18 .cse2 (* .cse3 6))) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) .cse2 (* .cse3 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse1 (* 30 |ULTIMATE.start_main_~y~0#1|))) (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 3) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 9 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) 80) (+ (* |ULTIMATE.start_main_~z~0#1| 45) (* 3 .cse0) (* 154 |ULTIMATE.start_main_~y~0#1|) (* 72 |ULTIMATE.start_main_~x~0#1|))))) [2023-02-14 11:57:25,853 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (let ((.cse4 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse3 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* 3 .cse0))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= .cse0 (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 94 |ULTIMATE.start_main_~y~0#1|) .cse1 (* 23 |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~x~0#1| 54)) (+ .cse2 (* 5 .cse3) 38 (* .cse4 2))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~x~0#1| 18) (* 30 |ULTIMATE.start_main_~y~0#1|))) (= (+ (* .cse4 3) .cse2 (* 9 .cse3) 80) (+ (* |ULTIMATE.start_main_~z~0#1| 45) .cse1 (* 154 |ULTIMATE.start_main_~y~0#1|) (* 72 |ULTIMATE.start_main_~x~0#1|)))))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2023-02-14 11:57:25,853 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2023-02-14 11:57:25,853 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse1 (* 6 |ULTIMATE.start_main_~n~0#1|)) (.cse7 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse8 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse3 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse4 (= |ULTIMATE.start_main_~y~0#1| (+ .cse7 .cse8 1))) (.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse1))) (.cse5 (<= |ULTIMATE.start_main_~a~0#1| 20)) (.cse6 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse2 (= (+ .cse7 .cse8 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and (= |ULTIMATE.start_main_~x~0#1| 1) .cse0 (= 6 .cse1) .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6 (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) .cse2) (and .cse3 .cse4 .cse0 (= |ULTIMATE.start_main_~x~0#1| 8) .cse5 .cse6 .cse2) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))))) [2023-02-14 11:57:25,854 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (let ((.cse4 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse3 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* 3 .cse0))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= .cse0 (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 94 |ULTIMATE.start_main_~y~0#1|) .cse1 (* 23 |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~x~0#1| 54)) (+ .cse2 (* 5 .cse3) 38 (* .cse4 2))) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~x~0#1| 18) (* 30 |ULTIMATE.start_main_~y~0#1|))) (= (+ (* .cse4 3) .cse2 (* 9 .cse3) 80) (+ (* |ULTIMATE.start_main_~z~0#1| 45) .cse1 (* 154 |ULTIMATE.start_main_~y~0#1|) (* 72 |ULTIMATE.start_main_~x~0#1|)))))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2023-02-14 11:57:25,854 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-14 11:57:25,854 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 11:57:25,854 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 56) the Hoare annotation is: true [2023-02-14 11:57:25,854 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2023-02-14 11:57:25,854 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse0)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2023-02-14 11:57:25,854 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6)) (.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ .cse0 (* |ULTIMATE.start_main_~y~0#1| 18)) (+ (* |ULTIMATE.start_main_~n~0#1| 12) 18 .cse1 (* .cse2 6))) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) .cse1 (* .cse2 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2023-02-14 11:57:25,855 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse2 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse0 (* 3 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 94 |ULTIMATE.start_main_~y~0#1|) .cse0 (* 23 |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~x~0#1| 54)) (+ .cse1 (* 5 .cse2) 38 (* .cse3 2))) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~x~0#1| 18) (* 30 |ULTIMATE.start_main_~y~0#1|))) (= (+ (* .cse3 3) .cse1 (* 9 .cse2) 80) (+ (* |ULTIMATE.start_main_~z~0#1| 45) .cse0 (* 154 |ULTIMATE.start_main_~y~0#1|) (* 72 |ULTIMATE.start_main_~x~0#1|))))) [2023-02-14 11:57:25,855 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 11:57:25,855 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 11:57:25,855 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-02-14 11:57:25,855 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-02-14 11:57:25,855 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (or (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2023-02-14 11:57:25,855 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-14 11:57:25,855 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse0)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2023-02-14 11:57:25,856 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse0)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2023-02-14 11:57:25,856 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-14 11:57:25,856 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-14 11:57:25,856 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-14 11:57:25,856 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-14 11:57:25,856 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-14 11:57:25,856 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-14 11:57:25,858 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1] [2023-02-14 11:57:25,859 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 11:57:25,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:57:25 BoogieIcfgContainer [2023-02-14 11:57:25,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 11:57:25,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 11:57:25,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 11:57:25,872 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 11:57:25,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:53:09" (3/4) ... [2023-02-14 11:57:25,875 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 11:57:25,878 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-14 11:57:25,880 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-14 11:57:25,880 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 11:57:25,881 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 11:57:25,881 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 11:57:25,900 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 11:57:25,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 11:57:25,900 INFO L158 Benchmark]: Toolchain (without parser) took 257024.33ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 99.9MB in the beginning and 112.1MB in the end (delta: -12.2MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2023-02-14 11:57:25,901 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 136.3MB. Free memory was 104.8MB in the beginning and 104.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 11:57:25,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.79ms. Allocated memory is still 136.3MB. Free memory was 99.6MB in the beginning and 88.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 11:57:25,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.66ms. Allocated memory is still 136.3MB. Free memory was 88.7MB in the beginning and 87.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 11:57:25,901 INFO L158 Benchmark]: Boogie Preprocessor took 26.75ms. Allocated memory is still 136.3MB. Free memory was 87.0MB in the beginning and 85.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 11:57:25,902 INFO L158 Benchmark]: RCFGBuilder took 228.32ms. Allocated memory is still 136.3MB. Free memory was 85.9MB in the beginning and 74.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 11:57:25,902 INFO L158 Benchmark]: TraceAbstraction took 256499.64ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 74.1MB in the beginning and 115.2MB in the end (delta: -41.1MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. [2023-02-14 11:57:25,902 INFO L158 Benchmark]: Witness Printer took 27.95ms. Allocated memory is still 172.0MB. Free memory was 115.2MB in the beginning and 112.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 11:57:25,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 136.3MB. Free memory was 104.8MB in the beginning and 104.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.79ms. Allocated memory is still 136.3MB. Free memory was 99.6MB in the beginning and 88.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.66ms. Allocated memory is still 136.3MB. Free memory was 88.7MB in the beginning and 87.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.75ms. Allocated memory is still 136.3MB. Free memory was 87.0MB in the beginning and 85.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 228.32ms. Allocated memory is still 136.3MB. Free memory was 85.9MB in the beginning and 74.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 256499.64ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 74.1MB in the beginning and 115.2MB in the end (delta: -41.1MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. * Witness Printer took 27.95ms. Allocated memory is still 172.0MB. Free memory was 115.2MB in the beginning and 112.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 256.4s, OverallIterations: 14, TraceHistogramMax: 24, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 49.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 174.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 330 SdHoareTripleChecker+Valid, 33.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 233 mSDsluCounter, 1120 SdHoareTripleChecker+Invalid, 33.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 741 mSDsCounter, 528 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4001 IncrementalHoareTripleChecker+Invalid, 4539 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 528 mSolverCounterUnsat, 379 mSDtfsCounter, 4001 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1656 GetRequests, 1451 SyntacticMatches, 4 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 31.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=13, InterpolantAutomatonStates: 132, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 74 PreInvPairs, 130 NumberOfFragments, 1170 HoareAnnotationTreeSize, 74 FomulaSimplifications, 1563 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 12245 FormulaSimplificationTreeSizeReductionInter, 174.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 28.0s InterpolantComputationTime, 871 NumberOfCodeBlocks, 759 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1529 ConstructedInterpolants, 0 QuantifiedInterpolants, 7670 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1837 ConjunctsInSsa, 350 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 8184/8766 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((cond == 1 && (n <= a || x * z == x * 12 + 6 * (a * x))) && z == 6 + 6 * n) && a <= 20) && 0 <= a) && x * 18 + y * 18 == n * 12 + 18 + n * y * 6 + n * z * 6) && 66 + n * 48 + n * y * 6 + n * z * 12 == 6 * z + x * 18 + 30 * y) && y * z * 3 + 2 * (y * y) + 9 * (z * z) + 80 == z * 45 + 3 * (x * z) + 154 * y + 72 * x RESULT: Ultimate proved your program to be correct! [2023-02-14 11:57:25,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE