./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_valuebound10.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 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 04:26:20,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 04:26:20,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 04:26:20,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 04:26:20,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 04:26:20,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 04:26:20,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 04:26:20,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 04:26:20,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 04:26:20,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 04:26:20,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 04:26:20,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 04:26:20,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 04:26:20,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 04:26:20,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 04:26:20,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 04:26:20,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 04:26:20,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 04:26:20,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 04:26:20,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 04:26:20,353 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 04:26:20,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 04:26:20,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 04:26:20,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 04:26:20,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 04:26:20,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 04:26:20,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 04:26:20,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 04:26:20,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 04:26:20,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 04:26:20,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 04:26:20,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 04:26:20,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 04:26:20,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 04:26:20,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 04:26:20,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 04:26:20,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 04:26:20,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 04:26:20,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 04:26:20,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 04:26:20,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 04:26:20,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 04:26:20,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 04:26:20,408 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 04:26:20,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 04:26:20,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 04:26:20,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 04:26:20,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 04:26:20,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 04:26:20,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 04:26:20,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 04:26:20,411 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 04:26:20,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 04:26:20,413 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 04:26:20,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 04:26:20,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 04:26:20,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 04:26:20,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 04:26:20,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 04:26:20,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 04:26:20,414 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 04:26:20,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 04:26:20,414 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 04:26:20,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 04:26:20,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 04:26:20,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 04:26:20,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 04:26:20,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:26:20,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 04:26:20,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 04:26:20,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 04:26:20,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 04:26:20,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 04:26:20,421 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 04:26:20,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 04:26:20,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 04:26:20,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a [2022-07-12 04:26:20,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 04:26:20,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 04:26:20,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 04:26:20,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 04:26:20,657 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 04:26:20,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2022-07-12 04:26:20,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c981584b/f31000487a1e4559b0dc13a508a7f99a/FLAG46078f201 [2022-07-12 04:26:21,164 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 04:26:21,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2022-07-12 04:26:21,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c981584b/f31000487a1e4559b0dc13a508a7f99a/FLAG46078f201 [2022-07-12 04:26:21,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c981584b/f31000487a1e4559b0dc13a508a7f99a [2022-07-12 04:26:21,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 04:26:21,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 04:26:21,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 04:26:21,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 04:26:21,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 04:26:21,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9649ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21, skipping insertion in model container [2022-07-12 04:26:21,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 04:26:21,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 04:26:21,670 WARN L230 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_valuebound10.c[588,601] [2022-07-12 04:26:21,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:26:21,694 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 04:26:21,702 WARN L230 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_valuebound10.c[588,601] [2022-07-12 04:26:21,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:26:21,721 INFO L208 MainTranslator]: Completed translation [2022-07-12 04:26:21,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21 WrapperNode [2022-07-12 04:26:21,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 04:26:21,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 04:26:21,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 04:26:21,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 04:26:21,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,755 INFO L137 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-07-12 04:26:21,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 04:26:21,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 04:26:21,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 04:26:21,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 04:26:21,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 04:26:21,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 04:26:21,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 04:26:21,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 04:26:21,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:26:21,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:21,821 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) [2022-07-12 04:26:21,846 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 [2022-07-12 04:26:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 04:26:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 04:26:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 04:26:21,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 04:26:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 04:26:21,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 04:26:21,914 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 04:26:21,916 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 04:26:22,077 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 04:26:22,086 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 04:26:22,086 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 04:26:22,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:26:22 BoogieIcfgContainer [2022-07-12 04:26:22,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 04:26:22,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 04:26:22,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 04:26:22,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 04:26:22,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 04:26:21" (1/3) ... [2022-07-12 04:26:22,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222c7d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:26:22, skipping insertion in model container [2022-07-12 04:26:22,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21" (2/3) ... [2022-07-12 04:26:22,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222c7d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:26:22, skipping insertion in model container [2022-07-12 04:26:22,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:26:22" (3/3) ... [2022-07-12 04:26:22,102 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2022-07-12 04:26:22,113 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 04:26:22,114 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 04:26:22,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 04:26:22,176 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4fa3f73f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5a0ff2d3 [2022-07-12 04:26:22,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 04:26:22,187 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) [2022-07-12 04:26:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 04:26:22,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:22,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:22,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:22,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:22,199 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2022-07-12 04:26:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:22,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851268084] [2022-07-12 04:26:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:22,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:26:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:22,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851268084] [2022-07-12 04:26:22,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851268084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:26:22,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:26:22,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 04:26:22,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26218662] [2022-07-12 04:26:22,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:26:22,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 04:26:22,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:22,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 04:26:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:26:22,347 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) [2022-07-12 04:26:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:22,374 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2022-07-12 04:26:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 04:26:22,377 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 [2022-07-12 04:26:22,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:22,385 INFO L225 Difference]: With dead ends: 51 [2022-07-12 04:26:22,385 INFO L226 Difference]: Without dead ends: 23 [2022-07-12 04:26:22,389 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 [2022-07-12 04:26:22,392 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 [2022-07-12 04:26:22,393 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] [2022-07-12 04:26:22,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-12 04:26:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-12 04:26:22,427 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) [2022-07-12 04:26:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2022-07-12 04:26:22,430 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2022-07-12 04:26:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:22,431 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2022-07-12 04:26:22,432 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) [2022-07-12 04:26:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2022-07-12 04:26:22,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 04:26:22,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:22,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:22,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 04:26:22,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:22,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:22,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2022-07-12 04:26:22,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:22,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424803313] [2022-07-12 04:26:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:22,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:26:22,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:22,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424803313] [2022-07-12 04:26:22,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424803313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:26:22,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:26:22,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:26:22,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224130226] [2022-07-12 04:26:22,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:26:22,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:26:22,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:22,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:26:22,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:26:22,627 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) [2022-07-12 04:26:22,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:22,714 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-07-12 04:26:22,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 04:26:22,714 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 [2022-07-12 04:26:22,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:22,716 INFO L225 Difference]: With dead ends: 29 [2022-07-12 04:26:22,716 INFO L226 Difference]: Without dead ends: 27 [2022-07-12 04:26:22,719 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 [2022-07-12 04:26:22,720 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:22,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:26:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-12 04:26:22,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-12 04:26:22,735 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) [2022-07-12 04:26:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-07-12 04:26:22,738 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2022-07-12 04:26:22,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:22,738 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-07-12 04:26:22,739 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) [2022-07-12 04:26:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-07-12 04:26:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-12 04:26:22,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:22,741 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:22,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 04:26:22,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:22,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2022-07-12 04:26:22,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:22,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914336720] [2022-07-12 04:26:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:22,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:22,757 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:22,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141495162] [2022-07-12 04:26:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:22,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:22,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:22,764 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) [2022-07-12 04:26:22,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 04:26:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:22,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 04:26:22,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:26:22,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:26:22,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:22,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914336720] [2022-07-12 04:26:22,908 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:22,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141495162] [2022-07-12 04:26:22,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141495162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:26:22,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:26:22,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:26:22,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205408430] [2022-07-12 04:26:22,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:26:22,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:26:22,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:26:22,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:26:22,914 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 04:26:22,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:22,982 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2022-07-12 04:26:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:26:22,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-12 04:26:22,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:22,984 INFO L225 Difference]: With dead ends: 46 [2022-07-12 04:26:22,984 INFO L226 Difference]: Without dead ends: 44 [2022-07-12 04:26:22,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:26:22,989 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:22,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 116 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:26:22,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-12 04:26:23,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2022-07-12 04:26:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-12 04:26:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-07-12 04:26:23,003 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2022-07-12 04:26:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:23,003 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-07-12 04:26:23,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 04:26:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-07-12 04:26:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 04:26:23,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:23,004 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:23,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:23,218 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 [2022-07-12 04:26:23,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:23,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2022-07-12 04:26:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:23,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610261945] [2022-07-12 04:26:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:23,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:23,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871915418] [2022-07-12 04:26:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:23,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:23,243 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) [2022-07-12 04:26:23,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 04:26:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:23,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 04:26:23,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 04:26:23,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:26:23,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:23,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610261945] [2022-07-12 04:26:23,314 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:23,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871915418] [2022-07-12 04:26:23,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871915418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:26:23,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:26:23,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:26:23,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488993680] [2022-07-12 04:26:23,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:26:23,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:26:23,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:23,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:26:23,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:26:23,315 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 04:26:23,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:23,370 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2022-07-12 04:26:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:26:23,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-12 04:26:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:23,372 INFO L225 Difference]: With dead ends: 50 [2022-07-12 04:26:23,372 INFO L226 Difference]: Without dead ends: 48 [2022-07-12 04:26:23,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:26:23,374 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:23,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 117 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:26:23,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-12 04:26:23,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2022-07-12 04:26:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-12 04:26:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2022-07-12 04:26:23,387 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 19 [2022-07-12 04:26:23,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:23,387 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2022-07-12 04:26:23,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 04:26:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2022-07-12 04:26:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 04:26:23,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:23,388 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:23,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:23,594 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 [2022-07-12 04:26:23,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:23,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2022-07-12 04:26:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:23,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854846662] [2022-07-12 04:26:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:23,603 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:23,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509515047] [2022-07-12 04:26:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:23,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:23,605 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) [2022-07-12 04:26:23,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 04:26:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:23,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 04:26:23,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 04:26:23,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:26:23,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:23,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854846662] [2022-07-12 04:26:23,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:23,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509515047] [2022-07-12 04:26:23,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509515047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:26:23,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:26:23,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:26:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383368560] [2022-07-12 04:26:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:26:23,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:26:23,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:26:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:26:23,693 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 04:26:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:23,765 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2022-07-12 04:26:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:26:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-07-12 04:26:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:23,766 INFO L225 Difference]: With dead ends: 58 [2022-07-12 04:26:23,766 INFO L226 Difference]: Without dead ends: 46 [2022-07-12 04:26:23,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:26:23,767 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:23,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:26:23,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-12 04:26:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-07-12 04:26:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-12 04:26:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-07-12 04:26:23,772 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2022-07-12 04:26:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:23,773 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-07-12 04:26:23,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 04:26:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-07-12 04:26:23,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 04:26:23,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:23,773 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:23,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:23,991 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 [2022-07-12 04:26:23,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:23,992 INFO L85 PathProgramCache]: Analyzing trace with hash -492592860, now seen corresponding path program 1 times [2022-07-12 04:26:23,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:23,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651011850] [2022-07-12 04:26:23,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:24,000 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:24,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170472106] [2022-07-12 04:26:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:24,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:24,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:24,002 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) [2022-07-12 04:26:24,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 04:26:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:24,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 04:26:24,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 04:26:24,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 04:26:24,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:24,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651011850] [2022-07-12 04:26:24,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:24,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170472106] [2022-07-12 04:26:24,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170472106] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:26:24,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:26:24,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-12 04:26:24,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909444492] [2022-07-12 04:26:24,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:24,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 04:26:24,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:24,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 04:26:24,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 04:26:24,233 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 04:26:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:24,550 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-07-12 04:26:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 04:26:24,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 41 [2022-07-12 04:26:24,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:24,552 INFO L225 Difference]: With dead ends: 69 [2022-07-12 04:26:24,552 INFO L226 Difference]: Without dead ends: 67 [2022-07-12 04:26:24,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-12 04:26:24,552 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:24,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 96 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 04:26:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-12 04:26:24,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2022-07-12 04:26:24,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-12 04:26:24,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-07-12 04:26:24,560 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 41 [2022-07-12 04:26:24,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:24,560 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-07-12 04:26:24,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 04:26:24,560 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-07-12 04:26:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 04:26:24,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:24,561 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] [2022-07-12 04:26:24,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:24,761 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 [2022-07-12 04:26:24,762 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:24,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 2 times [2022-07-12 04:26:24,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:24,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693964190] [2022-07-12 04:26:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:24,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:24,770 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:24,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413777940] [2022-07-12 04:26:24,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:26:24,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:24,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:24,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:26:24,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 04:26:24,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:26:24,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:24,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 04:26:24,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 04:26:24,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 04:26:24,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:24,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693964190] [2022-07-12 04:26:24,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:24,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413777940] [2022-07-12 04:26:24,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413777940] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:26:24,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:26:24,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-12 04:26:24,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396075155] [2022-07-12 04:26:24,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:24,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 04:26:24,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 04:26:24,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 04:26:24,952 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 04:26:25,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:25,099 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-07-12 04:26:25,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 04:26:25,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 46 [2022-07-12 04:26:25,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:25,113 INFO L225 Difference]: With dead ends: 73 [2022-07-12 04:26:25,113 INFO L226 Difference]: Without dead ends: 71 [2022-07-12 04:26:25,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 04:26:25,114 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 6 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:25,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 197 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:26:25,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-07-12 04:26:25,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2022-07-12 04:26:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 36 states have internal predecessors, (36), 19 states have call successors, (19), 8 states have call predecessors, (19), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-12 04:26:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-07-12 04:26:25,128 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 46 [2022-07-12 04:26:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:25,129 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-07-12 04:26:25,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 04:26:25,129 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-07-12 04:26:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 04:26:25,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:25,133 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:25,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:25,337 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 [2022-07-12 04:26:25,338 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:25,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash 900098756, now seen corresponding path program 3 times [2022-07-12 04:26:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:25,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97384950] [2022-07-12 04:26:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:25,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:25,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457420277] [2022-07-12 04:26:25,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 04:26:25,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:25,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:25,357 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) [2022-07-12 04:26:25,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 04:26:25,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 04:26:25,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:25,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-12 04:26:25,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 04:26:25,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 04:26:25,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97384950] [2022-07-12 04:26:25,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457420277] [2022-07-12 04:26:25,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457420277] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:26:25,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:26:25,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-12 04:26:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196269722] [2022-07-12 04:26:25,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:25,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 04:26:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 04:26:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 04:26:25,661 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-12 04:26:26,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:26,156 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2022-07-12 04:26:26,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 04:26:26,157 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 51 [2022-07-12 04:26:26,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:26,158 INFO L225 Difference]: With dead ends: 85 [2022-07-12 04:26:26,158 INFO L226 Difference]: Without dead ends: 77 [2022-07-12 04:26:26,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:26:26,159 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:26,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 95 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 04:26:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-12 04:26:26,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2022-07-12 04:26:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 45 states have internal predecessors, (45), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-12 04:26:26,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2022-07-12 04:26:26,172 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 51 [2022-07-12 04:26:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:26,173 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2022-07-12 04:26:26,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-12 04:26:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2022-07-12 04:26:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 04:26:26,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:26,174 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] [2022-07-12 04:26:26,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:26,391 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 [2022-07-12 04:26:26,391 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:26,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:26,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2022-07-12 04:26:26,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:26,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580312206] [2022-07-12 04:26:26,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:26,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:26,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:26,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691888685] [2022-07-12 04:26:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:26,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:26,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:26,402 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) [2022-07-12 04:26:26,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 04:26:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:26,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 04:26:26,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-12 04:26:26,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:26,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:26,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580312206] [2022-07-12 04:26:26,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:26,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691888685] [2022-07-12 04:26:26,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691888685] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:26:26,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:26:26,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-07-12 04:26:26,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93279635] [2022-07-12 04:26:26,749 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:26,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 04:26:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:26,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 04:26:26,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:26:26,750 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 04:26:26,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:26,886 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2022-07-12 04:26:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 04:26:26,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 67 [2022-07-12 04:26:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:26,887 INFO L225 Difference]: With dead ends: 87 [2022-07-12 04:26:26,887 INFO L226 Difference]: Without dead ends: 85 [2022-07-12 04:26:26,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-12 04:26:26,888 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:26,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 116 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:26:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-12 04:26:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2022-07-12 04:26:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.06) internal successors, (53), 52 states have internal predecessors, (53), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-12 04:26:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2022-07-12 04:26:26,897 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 67 [2022-07-12 04:26:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:26,897 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2022-07-12 04:26:26,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 04:26:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2022-07-12 04:26:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 04:26:26,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:26,898 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] [2022-07-12 04:26:26,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:27,115 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 [2022-07-12 04:26:27,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:27,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:27,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2022-07-12 04:26:27,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:27,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413916359] [2022-07-12 04:26:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:27,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:27,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:27,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238698637] [2022-07-12 04:26:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:27,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:27,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:27,126 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) [2022-07-12 04:26:27,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 04:26:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:27,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 04:26:27,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-12 04:26:27,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:27,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:27,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413916359] [2022-07-12 04:26:27,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:27,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238698637] [2022-07-12 04:26:27,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238698637] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:26:27,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:26:27,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-07-12 04:26:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499043220] [2022-07-12 04:26:27,481 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 04:26:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 04:26:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:26:27,482 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-07-12 04:26:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:27,601 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-07-12 04:26:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 04:26:27,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 [2022-07-12 04:26:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:27,602 INFO L225 Difference]: With dead ends: 91 [2022-07-12 04:26:27,603 INFO L226 Difference]: Without dead ends: 78 [2022-07-12 04:26:27,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-07-12 04:26:27,603 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:27,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:26:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-12 04:26:27,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-07-12 04:26:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-12 04:26:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-07-12 04:26:27,611 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 72 [2022-07-12 04:26:27,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:27,611 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-07-12 04:26:27,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-07-12 04:26:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-07-12 04:26:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 04:26:27,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:27,612 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:27,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-12 04:26:27,812 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 [2022-07-12 04:26:27,813 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:27,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1961933060, now seen corresponding path program 4 times [2022-07-12 04:26:27,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:27,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665244821] [2022-07-12 04:26:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:27,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:27,819 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:27,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592593398] [2022-07-12 04:26:27,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 04:26:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:27,821 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) [2022-07-12 04:26:27,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 04:26:27,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 04:26:27,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:27,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-12 04:26:27,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 70 proven. 29 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-12 04:26:28,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 15 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-07-12 04:26:28,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:28,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665244821] [2022-07-12 04:26:28,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592593398] [2022-07-12 04:26:28,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592593398] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:26:28,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:26:28,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-07-12 04:26:28,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914848032] [2022-07-12 04:26:28,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:28,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 04:26:28,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 04:26:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-12 04:26:28,366 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-12 04:26:29,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:29,023 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2022-07-12 04:26:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 04:26:29,024 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) Word has length 73 [2022-07-12 04:26:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:29,027 INFO L225 Difference]: With dead ends: 109 [2022-07-12 04:26:29,027 INFO L226 Difference]: Without dead ends: 107 [2022-07-12 04:26:29,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-07-12 04:26:29,028 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:29,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 81 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 04:26:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-12 04:26:29,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 97. [2022-07-12 04:26:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 62 states have internal predecessors, (62), 20 states have call successors, (20), 16 states have call predecessors, (20), 16 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-12 04:26:29,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-07-12 04:26:29,039 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 73 [2022-07-12 04:26:29,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:29,039 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-07-12 04:26:29,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-12 04:26:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-07-12 04:26:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 04:26:29,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:29,041 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:29,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:29,256 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 [2022-07-12 04:26:29,256 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:29,257 INFO L85 PathProgramCache]: Analyzing trace with hash 671163038, now seen corresponding path program 2 times [2022-07-12 04:26:29,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:29,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054449526] [2022-07-12 04:26:29,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:29,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:29,265 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:29,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41542132] [2022-07-12 04:26:29,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:26:29,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:29,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:29,268 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) [2022-07-12 04:26:29,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 04:26:29,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:26:29,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:29,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 04:26:29,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-07-12 04:26:29,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:29,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:29,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054449526] [2022-07-12 04:26:29,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:29,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41542132] [2022-07-12 04:26:29,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41542132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:26:29,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:26:29,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-12 04:26:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394001879] [2022-07-12 04:26:29,641 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:29,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 04:26:29,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:29,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 04:26:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-12 04:26:29,642 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-12 04:26:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:29,846 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2022-07-12 04:26:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 04:26:29,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 94 [2022-07-12 04:26:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:29,848 INFO L225 Difference]: With dead ends: 122 [2022-07-12 04:26:29,848 INFO L226 Difference]: Without dead ends: 120 [2022-07-12 04:26:29,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:26:29,848 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:29,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 04:26:29,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-12 04:26:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-07-12 04:26:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 75 states have internal predecessors, (76), 25 states have call successors, (25), 20 states have call predecessors, (25), 20 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-12 04:26:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2022-07-12 04:26:29,867 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 94 [2022-07-12 04:26:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:29,867 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2022-07-12 04:26:29,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-12 04:26:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2022-07-12 04:26:29,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 04:26:29,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:29,868 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] [2022-07-12 04:26:29,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:30,086 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 [2022-07-12 04:26:30,086 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash -674604307, now seen corresponding path program 2 times [2022-07-12 04:26:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:30,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667538547] [2022-07-12 04:26:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:30,094 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:30,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500707654] [2022-07-12 04:26:30,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:26:30,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:30,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:30,095 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) [2022-07-12 04:26:30,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 04:26:30,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:26:30,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:30,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 04:26:30,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-07-12 04:26:30,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:30,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:30,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667538547] [2022-07-12 04:26:30,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:30,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500707654] [2022-07-12 04:26:30,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500707654] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:26:30,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:26:30,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-12 04:26:30,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347024613] [2022-07-12 04:26:30,437 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:30,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 04:26:30,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 04:26:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-12 04:26:30,438 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 04:26:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:30,616 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2022-07-12 04:26:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 04:26:30,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 99 [2022-07-12 04:26:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:30,617 INFO L225 Difference]: With dead ends: 130 [2022-07-12 04:26:30,617 INFO L226 Difference]: Without dead ends: 117 [2022-07-12 04:26:30,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:26:30,618 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:30,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 144 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:26:30,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-12 04:26:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-12 04:26:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 23 states have call successors, (23), 20 states have call predecessors, (23), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-12 04:26:30,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2022-07-12 04:26:30,628 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 99 [2022-07-12 04:26:30,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:30,628 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2022-07-12 04:26:30,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 04:26:30,628 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2022-07-12 04:26:30,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 04:26:30,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:30,629 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] [2022-07-12 04:26:30,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:30,833 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 [2022-07-12 04:26:30,833 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:30,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:30,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 3 times [2022-07-12 04:26:30,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:30,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502064406] [2022-07-12 04:26:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:30,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:30,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:30,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759602720] [2022-07-12 04:26:30,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 04:26:30,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:30,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:30,841 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) [2022-07-12 04:26:30,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 04:26:31,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 04:26:31,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:31,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-12 04:26:31,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-07-12 04:26:31,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:32,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:32,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502064406] [2022-07-12 04:26:32,377 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:32,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759602720] [2022-07-12 04:26:32,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759602720] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:26:32,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:26:32,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-07-12 04:26:32,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406164121] [2022-07-12 04:26:32,377 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:32,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 04:26:32,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:32,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 04:26:32,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-12 04:26:32,378 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-12 04:26:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:32,694 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2022-07-12 04:26:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 04:26:32,695 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 121 [2022-07-12 04:26:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:32,697 INFO L225 Difference]: With dead ends: 123 [2022-07-12 04:26:32,697 INFO L226 Difference]: Without dead ends: 119 [2022-07-12 04:26:32,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-12 04:26:32,698 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:32,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 04:26:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-12 04:26:32,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-07-12 04:26:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 23 states have call successors, (23), 21 states have call predecessors, (23), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-12 04:26:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2022-07-12 04:26:32,711 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 121 [2022-07-12 04:26:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:32,712 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2022-07-12 04:26:32,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-12 04:26:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2022-07-12 04:26:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 04:26:32,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:32,714 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] [2022-07-12 04:26:32,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:32,918 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 [2022-07-12 04:26:32,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:32,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:32,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 3 times [2022-07-12 04:26:32,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:32,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366174282] [2022-07-12 04:26:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:32,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:32,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:32,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116785931] [2022-07-12 04:26:32,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 04:26:32,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:32,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:32,929 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:26:32,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 04:26:33,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-12 04:26:33,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:33,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-12 04:26:33,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 181 proven. 69 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-12 04:26:36,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 148 proven. 39 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-07-12 04:26:40,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:40,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366174282] [2022-07-12 04:26:40,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:40,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116785931] [2022-07-12 04:26:40,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116785931] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:26:40,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:26:40,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2022-07-12 04:26:40,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583444630] [2022-07-12 04:26:40,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:40,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 04:26:40,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:40,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 04:26:40,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-07-12 04:26:40,397 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-07-12 04:26:41,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:41,454 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2022-07-12 04:26:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 04:26:41,454 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 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 [2022-07-12 04:26:41,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:41,455 INFO L225 Difference]: With dead ends: 119 [2022-07-12 04:26:41,455 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 04:26:41,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-07-12 04:26:41,456 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:41,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 41 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 04:26:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 04:26:41,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 04:26:41,456 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) [2022-07-12 04:26:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 04:26:41,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2022-07-12 04:26:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:41,457 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 04:26:41,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-07-12 04:26:41,457 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 04:26:41,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 04:26:41,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 04:26:41,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:41,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 04:26:41,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 04:26:45,452 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 04:26:45,453 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (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_~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|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:26:45,453 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (.cse0 (= |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))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 (< |ULTIMATE.start_main_~a~0#1| 2) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (< |ULTIMATE.start_main_~a~0#1| (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6))) .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~a~0#1| 10) .cse4) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse2 (< |ULTIMATE.start_main_~a~0#1| 1) .cse4) (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|)))) [2022-07-12 04:26:45,453 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= |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_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-07-12 04:26:45,453 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= |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_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-07-12 04:26:45,453 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (.cse0 (= |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))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 (< |ULTIMATE.start_main_~a~0#1| 2) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (< |ULTIMATE.start_main_~a~0#1| (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6))) .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~a~0#1| 10) .cse4) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse2 (< |ULTIMATE.start_main_~a~0#1| 1) .cse4) (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|)))) [2022-07-12 04:26:45,453 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-07-12 04:26:45,453 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2022-07-12 04:26:45,453 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 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_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:26:45,453 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (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_~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|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:26:45,453 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 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_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:26:45,453 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 04:26:45,453 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 04:26:45,453 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 04:26:45,453 INFO L902 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2022-07-12 04:26:45,453 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-07-12 04:26:45,453 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= |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_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-07-12 04:26:45,454 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (.cse0 (= |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))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (< |ULTIMATE.start_main_~a~0#1| (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6))) .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~a~0#1| 10) .cse4) (and .cse0 .cse1 .cse2 .cse3 (not (<= 2 |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~z~0#1| 18)) (and .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and .cse0 .cse1 .cse2 (< |ULTIMATE.start_main_~a~0#1| 1) .cse4 (<= 12 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1)))) [2022-07-12 04:26:45,454 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-12 04:26:45,454 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 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_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:26:45,454 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 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_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:26:45,454 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-07-12 04:26:45,454 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-07-12 04:26:45,454 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-07-12 04:26:45,454 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-07-12 04:26:45,454 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-07-12 04:26:45,455 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-12 04:26:45,457 INFO L356 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1, 1, 1, 1] [2022-07-12 04:26:45,458 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 04:26:45,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 04:26:45 BoogieIcfgContainer [2022-07-12 04:26:45,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 04:26:45,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 04:26:45,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 04:26:45,471 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 04:26:45,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:26:22" (3/4) ... [2022-07-12 04:26:45,473 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 04:26:45,478 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-12 04:26:45,482 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-12 04:26:45,482 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 04:26:45,482 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 04:26:45,482 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 04:26:45,513 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 04:26:45,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 04:26:45,514 INFO L158 Benchmark]: Toolchain (without parser) took 23963.88ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 66.1MB in the beginning and 57.6MB in the end (delta: 8.5MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2022-07-12 04:26:45,514 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 64.2MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:26:45,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.48ms. Allocated memory is still 90.2MB. Free memory was 66.0MB in the beginning and 55.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 04:26:45,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.66ms. Allocated memory is still 90.2MB. Free memory was 55.6MB in the beginning and 54.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:26:45,515 INFO L158 Benchmark]: Boogie Preprocessor took 33.26ms. Allocated memory is still 90.2MB. Free memory was 54.0MB in the beginning and 52.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:26:45,516 INFO L158 Benchmark]: RCFGBuilder took 298.85ms. Allocated memory is still 90.2MB. Free memory was 52.9MB in the beginning and 42.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 04:26:45,516 INFO L158 Benchmark]: TraceAbstraction took 23380.01ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 42.4MB in the beginning and 60.8MB in the end (delta: -18.4MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2022-07-12 04:26:45,516 INFO L158 Benchmark]: Witness Printer took 42.51ms. Allocated memory is still 132.1MB. Free memory was 60.8MB in the beginning and 57.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:26:45,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 64.2MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.48ms. Allocated memory is still 90.2MB. Free memory was 66.0MB in the beginning and 55.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.66ms. Allocated memory is still 90.2MB. Free memory was 55.6MB in the beginning and 54.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.26ms. Allocated memory is still 90.2MB. Free memory was 54.0MB in the beginning and 52.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 298.85ms. Allocated memory is still 90.2MB. Free memory was 52.9MB in the beginning and 42.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 23380.01ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 42.4MB in the beginning and 60.8MB in the end (delta: -18.4MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Witness Printer took 42.51ms. Allocated memory is still 132.1MB. Free memory was 60.8MB in the beginning and 57.6MB 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: 23.3s, OverallIterations: 15, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 1530 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1013 mSDsCounter, 321 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2085 IncrementalHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 321 mSolverCounterUnsat, 517 mSDtfsCounter, 2085 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1373 GetRequests, 1225 SyntacticMatches, 13 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=12, InterpolantAutomatonStates: 106, 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, 15 MinimizatonAttempts, 54 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 65 PreInvPairs, 111 NumberOfFragments, 941 HoareAnnotationTreeSize, 65 FomulaSimplifications, 12145 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 14 FomulaSimplificationsInter, 16431 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 865 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1182 ConstructedInterpolants, 0 QuantifiedInterpolants, 5622 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1687 ConjunctsInSsa, 244 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 5626/5874 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: 33]: Loop Invariant Derived loop invariant: (((((cond == 1 && n * n * n == x) && y == 3 * n + 3 * (n * n) + 1) && z == 6 + 6 * n) && n <= a + 1) && a <= 10) && 0 <= a - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-12 04:26:45,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE