./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.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_valuebound100.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 4ecd26f30dcf2e00e51585057257a3ebe53fdc2d12652276addf710ad43d7dfd --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 04:26:20,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 04:26:20,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 04:26:20,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 04:26:20,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 04:26:20,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 04:26:20,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 04:26:20,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 04:26:20,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 04:26:20,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 04:26:20,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 04:26:20,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 04:26:20,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 04:26:20,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 04:26:20,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 04:26:20,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 04:26:20,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 04:26:20,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 04:26:20,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 04:26:20,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 04:26:20,737 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 04:26:20,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 04:26:20,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 04:26:20,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 04:26:20,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 04:26:20,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 04:26:20,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 04:26:20,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 04:26:20,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 04:26:20,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 04:26:20,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 04:26:20,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 04:26:20,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 04:26:20,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 04:26:20,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 04:26:20,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 04:26:20,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 04:26:20,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 04:26:20,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 04:26:20,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 04:26:20,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 04:26:20,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 04:26:20,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 04:26:20,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 04:26:20,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 04:26:20,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 04:26:20,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 04:26:20,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 04:26:20,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 04:26:20,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 04:26:20,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 04:26:20,788 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 04:26:20,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 04:26:20,788 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 04:26:20,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 04:26:20,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 04:26:20,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 04:26:20,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 04:26:20,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 04:26:20,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 04:26:20,790 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 04:26:20,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 04:26:20,791 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 04:26:20,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 04:26:20,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 04:26:20,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 04:26:20,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 04:26:20,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:26:20,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 04:26:20,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 04:26:20,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 04:26:20,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 04:26:20,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 04:26:20,793 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 04:26:20,793 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 04:26:20,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 04:26:20,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ecd26f30dcf2e00e51585057257a3ebe53fdc2d12652276addf710ad43d7dfd [2022-07-12 04:26:20,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 04:26:21,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 04:26:21,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 04:26:21,016 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 04:26:21,016 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 04:26:21,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c [2022-07-12 04:26:21,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59a5815e/541209a981884ca49d4aa3f16561e39f/FLAGac7a94d73 [2022-07-12 04:26:21,413 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 04:26:21,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c [2022-07-12 04:26:21,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59a5815e/541209a981884ca49d4aa3f16561e39f/FLAGac7a94d73 [2022-07-12 04:26:21,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59a5815e/541209a981884ca49d4aa3f16561e39f [2022-07-12 04:26:21,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 04:26:21,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 04:26:21,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 04:26:21,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 04:26:21,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 04:26:21,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a85a1c0 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 04:26:21,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:26:21" (1/1) ... [2022-07-12 04:26:21,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 04:26:21,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 04:26:21,574 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_valuebound100.c[588,601] [2022-07-12 04:26:21,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:26:21,622 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 04:26:21,633 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_valuebound100.c[588,601] [2022-07-12 04:26:21,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:26:21,663 INFO L208 MainTranslator]: Completed translation [2022-07-12 04:26:21,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:26:21 WrapperNode [2022-07-12 04:26:21,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 04:26:21,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 04:26:21,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 04:26:21,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 04:26:21,671 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 04:26:21,695 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 04:26:21,713 INFO L137 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-07-12 04:26:21,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 04:26:21,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 04:26:21,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 04:26:21,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 04:26:21,720 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 04:26:21,720 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 04:26:21,723 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 04:26:21,723 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 04:26:21,726 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 04:26:21,728 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 04:26:21,729 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 04:26:21,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 04:26:21,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 04:26:21,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 04:26:21,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 04:26:21,737 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 04:26:21,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:26:21,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:21,767 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 04:26:21,785 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 04:26:21,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 04:26:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 04:26:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 04:26:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 04:26:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 04:26:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 04:26:21,840 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 04:26:21,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 04:26:21,953 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 04:26:21,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 04:26:21,957 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 04:26:21,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:26:21 BoogieIcfgContainer [2022-07-12 04:26:21,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 04:26:21,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 04:26:21,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 04:26:21,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 04:26:21,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 04:26:21" (1/3) ... [2022-07-12 04:26:21,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d629a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:26:21, skipping insertion in model container [2022-07-12 04:26:21,970 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 04:26:21,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d629a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:26:21, skipping insertion in model container [2022-07-12 04:26:21,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:26:21" (3/3) ... [2022-07-12 04:26:21,971 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound100.c [2022-07-12 04:26:21,982 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 04:26:21,983 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 04:26:22,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 04:26:22,028 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@4506a69a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@611bf979 [2022-07-12 04:26:22,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 04:26:22,044 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 04:26:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 04:26:22,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:22,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:22,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2022-07-12 04:26:22,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:22,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886364090] [2022-07-12 04:26:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:22,260 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 04:26:22,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:22,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886364090] [2022-07-12 04:26:22,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886364090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:26:22,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:26:22,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 04:26:22,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064840912] [2022-07-12 04:26:22,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:26:22,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 04:26:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:22,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 04:26:22,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:26:22,304 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 04:26:22,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:22,331 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2022-07-12 04:26:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 04:26:22,334 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 04:26:22,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:22,342 INFO L225 Difference]: With dead ends: 51 [2022-07-12 04:26:22,342 INFO L226 Difference]: Without dead ends: 23 [2022-07-12 04:26:22,348 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 04:26:22,351 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 04:26:22,352 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 04:26:22,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-12 04:26:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-12 04:26:22,382 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 04:26:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2022-07-12 04:26:22,386 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2022-07-12 04:26:22,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:22,386 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2022-07-12 04:26:22,386 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 04:26:22,387 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2022-07-12 04:26:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 04:26:22,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:22,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:22,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 04:26:22,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:22,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2022-07-12 04:26:22,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:22,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339430623] [2022-07-12 04:26:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:22,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:22,524 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 04:26:22,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:22,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339430623] [2022-07-12 04:26:22,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339430623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:26:22,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:26:22,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:26:22,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176781055] [2022-07-12 04:26:22,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:26:22,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:26:22,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:22,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:26:22,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:26:22,527 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 04:26:22,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:22,588 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-07-12 04:26:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 04:26:22,589 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 04:26:22,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:22,590 INFO L225 Difference]: With dead ends: 29 [2022-07-12 04:26:22,591 INFO L226 Difference]: Without dead ends: 27 [2022-07-12 04:26:22,594 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 04:26:22,596 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:22,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:26:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-12 04:26:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-12 04:26:22,609 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 04:26:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-07-12 04:26:22,613 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2022-07-12 04:26:22,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:22,614 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-07-12 04:26:22,614 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 04:26:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-07-12 04:26:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-12 04:26:22,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:22,621 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:22,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 04:26:22,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:22,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:22,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2022-07-12 04:26:22,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:22,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973120157] [2022-07-12 04:26:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:22,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:22,643 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:22,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619351199] [2022-07-12 04:26:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:22,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:22,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:22,663 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 04:26:22,683 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 04:26:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:22,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 04:26:22,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:22,816 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 04:26:22,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:26:22,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:22,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973120157] [2022-07-12 04:26:22,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:22,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619351199] [2022-07-12 04:26:22,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619351199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:26:22,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:26:22,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:26:22,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452868431] [2022-07-12 04:26:22,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:26:22,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:26:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:22,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:26:22,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:26:22,819 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 04:26:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:22,890 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2022-07-12 04:26:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:26:22,891 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 04:26:22,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:22,893 INFO L225 Difference]: With dead ends: 46 [2022-07-12 04:26:22,893 INFO L226 Difference]: Without dead ends: 44 [2022-07-12 04:26:22,893 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 04:26:22,894 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 04:26:22,895 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 04:26:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-12 04:26:22,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2022-07-12 04:26:22,908 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 04:26:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-07-12 04:26:22,909 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2022-07-12 04:26:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:22,909 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-07-12 04:26:22,910 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 04:26:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-07-12 04:26:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 04:26:22,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:22,910 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:26:22,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 04:26:23,114 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 04:26:23,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:23,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:23,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2022-07-12 04:26:23,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:23,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131553085] [2022-07-12 04:26:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:23,125 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:23,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286588396] [2022-07-12 04:26:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:23,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:23,127 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 04:26:23,128 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 04:26:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:23,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 04:26:23,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:23,197 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 04:26:23,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:26:23,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:23,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131553085] [2022-07-12 04:26:23,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286588396] [2022-07-12 04:26:23,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286588396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:26:23,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:26:23,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:26:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697789079] [2022-07-12 04:26:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:26:23,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:26:23,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:23,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:26:23,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:26:23,205 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 04:26:23,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:23,264 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2022-07-12 04:26:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:26:23,265 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 04:26:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:23,267 INFO L225 Difference]: With dead ends: 50 [2022-07-12 04:26:23,267 INFO L226 Difference]: Without dead ends: 48 [2022-07-12 04:26:23,267 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 04:26:23,269 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 04:26:23,270 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 04:26:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-12 04:26:23,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2022-07-12 04:26:23,279 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 04:26:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2022-07-12 04:26:23,281 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 19 [2022-07-12 04:26:23,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:23,281 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2022-07-12 04:26:23,281 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 04:26:23,282 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2022-07-12 04:26:23,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 04:26:23,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:23,282 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 04:26:23,299 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 04:26:23,486 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 04:26:23,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2022-07-12 04:26:23,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:23,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235918406] [2022-07-12 04:26:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:23,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:23,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638437055] [2022-07-12 04:26:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:23,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:23,504 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 04:26:23,505 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 04:26:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:23,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 04:26:23,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:23,573 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 04:26:23,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:26:23,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:23,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235918406] [2022-07-12 04:26:23,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:23,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638437055] [2022-07-12 04:26:23,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638437055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:26:23,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:26:23,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:26:23,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366451883] [2022-07-12 04:26:23,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:26:23,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:26:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:26:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:26:23,576 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 04:26:23,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:23,630 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2022-07-12 04:26:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:26:23,631 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 04:26:23,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:23,631 INFO L225 Difference]: With dead ends: 58 [2022-07-12 04:26:23,631 INFO L226 Difference]: Without dead ends: 46 [2022-07-12 04:26:23,632 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 04:26:23,632 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:23,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:26:23,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-12 04:26:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-07-12 04:26:23,638 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 04:26:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-07-12 04:26:23,639 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2022-07-12 04:26:23,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:23,639 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-07-12 04:26:23,639 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 04:26:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-07-12 04:26:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 04:26:23,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:23,640 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 04:26:23,665 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 04:26:23,865 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 04:26:23,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:23,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:23,866 INFO L85 PathProgramCache]: Analyzing trace with hash -492592860, now seen corresponding path program 1 times [2022-07-12 04:26:23,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:23,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042879162] [2022-07-12 04:26:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:23,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:23,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341060819] [2022-07-12 04:26:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:23,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:23,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:23,884 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 04:26:23,885 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 04:26:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:23,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 04:26:23,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:24,001 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 04:26:24,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:24,070 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 04:26:24,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:24,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042879162] [2022-07-12 04:26:24,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:24,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341060819] [2022-07-12 04:26:24,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341060819] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:26:24,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:26:24,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-12 04:26:24,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242147704] [2022-07-12 04:26:24,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:24,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 04:26:24,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:24,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 04:26:24,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 04:26:24,074 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 04:26:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:24,398 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-07-12 04:26:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 04:26:24,398 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 04:26:24,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:24,399 INFO L225 Difference]: With dead ends: 69 [2022-07-12 04:26:24,399 INFO L226 Difference]: Without dead ends: 67 [2022-07-12 04:26:24,400 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 04:26:24,400 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 04:26:24,400 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 04:26:24,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-12 04:26:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2022-07-12 04:26:24,407 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 04:26:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-07-12 04:26:24,408 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 41 [2022-07-12 04:26:24,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:24,408 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-07-12 04:26:24,408 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 04:26:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-07-12 04:26:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 04:26:24,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:24,409 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 04:26:24,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-12 04:26:24,623 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 04:26:24,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:24,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:24,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 2 times [2022-07-12 04:26:24,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:24,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711340831] [2022-07-12 04:26:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:24,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:24,632 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:24,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250447287] [2022-07-12 04:26:24,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:26:24,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:24,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:24,633 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 04:26:24,634 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 04:26:24,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:26:24,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:24,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 04:26:24,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:24,760 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 04:26:24,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:24,811 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 04:26:24,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:24,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711340831] [2022-07-12 04:26:24,811 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:24,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250447287] [2022-07-12 04:26:24,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250447287] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:26:24,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:26:24,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-12 04:26:24,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187069046] [2022-07-12 04:26:24,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:24,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 04:26:24,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:24,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 04:26:24,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 04:26:24,813 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 04:26:24,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:24,929 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-07-12 04:26:24,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 04:26:24,929 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 04:26:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:24,930 INFO L225 Difference]: With dead ends: 73 [2022-07-12 04:26:24,930 INFO L226 Difference]: Without dead ends: 71 [2022-07-12 04:26:24,930 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 04:26:24,937 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 04:26:24,937 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 04:26:24,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-07-12 04:26:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2022-07-12 04:26:24,946 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 04:26:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-07-12 04:26:24,946 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 46 [2022-07-12 04:26:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:24,947 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-07-12 04:26:24,947 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 04:26:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-07-12 04:26:24,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 04:26:24,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:24,948 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 04:26:24,964 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 04:26:25,151 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 04:26:25,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:25,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash 900098756, now seen corresponding path program 3 times [2022-07-12 04:26:25,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:25,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372898823] [2022-07-12 04:26:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:25,164 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:25,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520958818] [2022-07-12 04:26:25,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 04:26:25,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:25,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:25,167 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 04:26:25,168 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 04:26:25,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 04:26:25,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:25,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-12 04:26:25,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:25,286 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 04:26:25,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:25,407 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 04:26:25,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:25,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372898823] [2022-07-12 04:26:25,407 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:25,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520958818] [2022-07-12 04:26:25,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520958818] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:26:25,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:26:25,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-12 04:26:25,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561772247] [2022-07-12 04:26:25,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:25,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 04:26:25,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:25,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 04:26:25,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 04:26:25,409 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 04:26:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:25,725 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2022-07-12 04:26:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 04:26:25,726 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 04:26:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:25,726 INFO L225 Difference]: With dead ends: 85 [2022-07-12 04:26:25,726 INFO L226 Difference]: Without dead ends: 77 [2022-07-12 04:26:25,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:26:25,727 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:25,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 95 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 04:26:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-12 04:26:25,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2022-07-12 04:26:25,735 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 04:26:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2022-07-12 04:26:25,735 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 51 [2022-07-12 04:26:25,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:25,735 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2022-07-12 04:26:25,736 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 04:26:25,736 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2022-07-12 04:26:25,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 04:26:25,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:25,736 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 04:26:25,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-12 04:26:25,951 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 04:26:25,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:25,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:25,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2022-07-12 04:26:25,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:25,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637181026] [2022-07-12 04:26:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:25,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:25,961 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:25,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407109159] [2022-07-12 04:26:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:25,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:25,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:25,962 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 04:26:25,963 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 04:26:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:26,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 04:26:26,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:26,182 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 04:26:26,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:26,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:26,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637181026] [2022-07-12 04:26:26,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:26,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407109159] [2022-07-12 04:26:26,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407109159] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:26:26,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:26:26,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-07-12 04:26:26,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808229357] [2022-07-12 04:26:26,364 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:26,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 04:26:26,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:26,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 04:26:26,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:26:26,366 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 04:26:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:26,494 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2022-07-12 04:26:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 04:26:26,495 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 04:26:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:26,501 INFO L225 Difference]: With dead ends: 87 [2022-07-12 04:26:26,501 INFO L226 Difference]: Without dead ends: 85 [2022-07-12 04:26:26,503 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 04:26:26,505 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 04:26:26,505 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 04:26:26,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-12 04:26:26,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2022-07-12 04:26:26,524 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 04:26:26,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2022-07-12 04:26:26,526 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 67 [2022-07-12 04:26:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:26,526 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2022-07-12 04:26:26,526 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 04:26:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2022-07-12 04:26:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 04:26:26,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:26,531 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 04:26:26,557 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 04:26:26,739 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 04:26:26,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:26,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2022-07-12 04:26:26,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:26,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766831175] [2022-07-12 04:26:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:26,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:26,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:26,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573101994] [2022-07-12 04:26:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:26,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:26,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:26,751 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 04:26:26,751 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 04:26:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:26:26,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 04:26:26,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:26,935 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 04:26:26,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:27,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:27,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766831175] [2022-07-12 04:26:27,068 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:27,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573101994] [2022-07-12 04:26:27,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573101994] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:26:27,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:26:27,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-07-12 04:26:27,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580194951] [2022-07-12 04:26:27,068 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:27,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 04:26:27,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:27,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 04:26:27,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:26:27,069 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 04:26:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:27,185 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-07-12 04:26:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 04:26:27,185 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 04:26:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:27,186 INFO L225 Difference]: With dead ends: 91 [2022-07-12 04:26:27,186 INFO L226 Difference]: Without dead ends: 78 [2022-07-12 04:26:27,186 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 04:26:27,187 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 04:26:27,187 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 04:26:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-12 04:26:27,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-07-12 04:26:27,198 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 04:26:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-07-12 04:26:27,199 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 72 [2022-07-12 04:26:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:27,199 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-07-12 04:26:27,200 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 04:26:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-07-12 04:26:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 04:26:27,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:27,201 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 04:26:27,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 04:26:27,419 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 04:26:27,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:27,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:27,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1961933060, now seen corresponding path program 4 times [2022-07-12 04:26:27,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:27,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063465745] [2022-07-12 04:26:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:27,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:27,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:27,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684670733] [2022-07-12 04:26:27,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 04:26:27,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:27,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:27,429 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 04:26:27,434 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 04:26:27,467 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 04:26:27,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:27,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-12 04:26:27,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:27,625 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 04:26:27,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:27,885 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 04:26:27,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:27,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063465745] [2022-07-12 04:26:27,885 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:27,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684670733] [2022-07-12 04:26:27,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684670733] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:26:27,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:26:27,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-07-12 04:26:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000751560] [2022-07-12 04:26:27,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:27,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 04:26:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 04:26:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-12 04:26:27,888 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 04:26:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:28,255 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2022-07-12 04:26:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 04:26:28,255 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 04:26:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:28,257 INFO L225 Difference]: With dead ends: 109 [2022-07-12 04:26:28,257 INFO L226 Difference]: Without dead ends: 107 [2022-07-12 04:26:28,257 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 04:26:28,258 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:28,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 81 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 04:26:28,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-12 04:26:28,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 97. [2022-07-12 04:26:28,267 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 04:26:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-07-12 04:26:28,267 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 73 [2022-07-12 04:26:28,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:28,268 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-07-12 04:26:28,268 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 04:26:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-07-12 04:26:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 04:26:28,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:28,269 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 04:26:28,293 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 04:26:28,475 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 04:26:28,475 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:28,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash 671163038, now seen corresponding path program 2 times [2022-07-12 04:26:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:28,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600256419] [2022-07-12 04:26:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:28,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:28,483 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:28,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587347334] [2022-07-12 04:26:28,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:26:28,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:28,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:28,485 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 04:26:28,491 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 04:26:28,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:26:28,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:28,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 04:26:28,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:28,690 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 04:26:28,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:28,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:28,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600256419] [2022-07-12 04:26:28,842 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:28,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587347334] [2022-07-12 04:26:28,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587347334] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:26:28,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:26:28,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-12 04:26:28,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970878873] [2022-07-12 04:26:28,843 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:28,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 04:26:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:28,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 04:26:28,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-12 04:26:28,844 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 04:26:29,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:29,005 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2022-07-12 04:26:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 04:26:29,005 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 04:26:29,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:29,006 INFO L225 Difference]: With dead ends: 122 [2022-07-12 04:26:29,006 INFO L226 Difference]: Without dead ends: 120 [2022-07-12 04:26:29,006 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 04:26:29,007 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:29,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:26:29,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-12 04:26:29,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-07-12 04:26:29,016 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 04:26:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2022-07-12 04:26:29,016 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 94 [2022-07-12 04:26:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:29,017 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2022-07-12 04:26:29,017 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 04:26:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2022-07-12 04:26:29,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 04:26:29,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:29,017 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 04:26:29,035 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 04:26:29,218 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 04:26:29,218 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:29,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash -674604307, now seen corresponding path program 2 times [2022-07-12 04:26:29,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:29,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17250844] [2022-07-12 04:26:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:29,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:29,226 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:29,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21482812] [2022-07-12 04:26:29,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:26:29,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:29,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:29,227 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 04:26:29,228 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 04:26:29,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:26:29,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:29,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 04:26:29,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:29,438 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 04:26:29,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:29,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:29,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17250844] [2022-07-12 04:26:29,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:29,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21482812] [2022-07-12 04:26:29,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21482812] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:26:29,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:26:29,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-12 04:26:29,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741518998] [2022-07-12 04:26:29,544 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:29,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 04:26:29,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:29,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 04:26:29,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-12 04:26:29,545 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 04:26:29,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:29,738 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2022-07-12 04:26:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 04:26:29,739 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 04:26:29,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:29,740 INFO L225 Difference]: With dead ends: 130 [2022-07-12 04:26:29,740 INFO L226 Difference]: Without dead ends: 117 [2022-07-12 04:26:29,740 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 04:26:29,740 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:29,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 144 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 04:26:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-12 04:26:29,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-12 04:26:29,751 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 04:26:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2022-07-12 04:26:29,752 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 99 [2022-07-12 04:26:29,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:29,752 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2022-07-12 04:26:29,752 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 04:26:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2022-07-12 04:26:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 04:26:29,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:29,753 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 04:26:29,771 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 04:26:29,963 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 04:26:29,964 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:29,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:29,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 3 times [2022-07-12 04:26:29,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:29,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016349476] [2022-07-12 04:26:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:29,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:29,974 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:29,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905553912] [2022-07-12 04:26:29,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 04:26:29,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:29,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:29,977 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 04:26:29,991 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 04:26:30,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 04:26:30,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:30,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-12 04:26:30,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:30,692 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 04:26:30,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:31,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:31,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016349476] [2022-07-12 04:26:31,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:31,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905553912] [2022-07-12 04:26:31,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905553912] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:26:31,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:26:31,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-07-12 04:26:31,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939864543] [2022-07-12 04:26:31,050 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:31,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 04:26:31,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:31,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 04:26:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-12 04:26:31,051 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 04:26:33,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:26:35,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:26:36,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:26:38,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:26:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:26:38,332 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2022-07-12 04:26:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 04:26:38,333 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 04:26:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:26:38,333 INFO L225 Difference]: With dead ends: 123 [2022-07-12 04:26:38,333 INFO L226 Difference]: Without dead ends: 119 [2022-07-12 04:26:38,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-12 04:26:38,334 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-12 04:26:38,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 126 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-07-12 04:26:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-12 04:26:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-07-12 04:26:38,353 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 04:26:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2022-07-12 04:26:38,353 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 121 [2022-07-12 04:26:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:26:38,354 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2022-07-12 04:26:38,354 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 04:26:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2022-07-12 04:26:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 04:26:38,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:26:38,355 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 04:26:38,385 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 04:26:38,560 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 04:26:38,560 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:26:38,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:26:38,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 3 times [2022-07-12 04:26:38,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:26:38,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411072785] [2022-07-12 04:26:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:26:38,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:26:38,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:26:38,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120955870] [2022-07-12 04:26:38,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 04:26:38,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:26:38,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:26:38,579 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 04:26:38,580 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 04:26:39,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-12 04:26:39,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:26:39,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-12 04:26:39,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:26:50,374 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 04:26:50,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:26:58,301 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 04:26:58,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:26:58,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411072785] [2022-07-12 04:26:58,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:26:58,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120955870] [2022-07-12 04:26:58,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120955870] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:26:58,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:26:58,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2022-07-12 04:26:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108774444] [2022-07-12 04:26:58,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:26:58,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 04:26:58,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:26:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 04:26:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-07-12 04:26:58,304 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 04:27:04,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:27:06,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:27:08,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:27:11,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:27:13,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:27:14,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:27:15,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-12 04:27:15,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:15,968 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2022-07-12 04:27:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 04:27:15,969 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 04:27:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:15,969 INFO L225 Difference]: With dead ends: 119 [2022-07-12 04:27:15,969 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 04:27:15,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=111, Invalid=394, Unknown=1, NotChecked=0, Total=506 [2022-07-12 04:27:15,970 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 72 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-07-12 04:27:15,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 41 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 157 Invalid, 5 Unknown, 0 Unchecked, 14.7s Time] [2022-07-12 04:27:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 04:27:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 04:27:15,971 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 04:27:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 04:27:15,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2022-07-12 04:27:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:15,971 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 04:27:15,971 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 04:27:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 04:27:15,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 04:27:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 04:27:15,984 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 04:27:16,179 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 04:27:16,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 04:27:20,638 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 04:27:20,638 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_~a~0#1| 100) (= |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)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:27:20,638 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| 100) .cse0 (not (<= (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6)) |ULTIMATE.start_main_~a~0#1|)) .cse1 .cse2 .cse3 .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 04:27:20,638 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 04:27:20,638 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 04:27:20,638 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| 100) .cse0 (not (<= (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6)) |ULTIMATE.start_main_~a~0#1|)) .cse1 .cse2 .cse3 .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 04:27:20,639 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-07-12 04:27:20,639 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2022-07-12 04:27:20,639 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_~a~0#1| 100) (= |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)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:27:20,639 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_~a~0#1| 100) (= |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)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:27:20,639 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_~a~0#1| 100) (= |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)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:27:20,639 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 04:27:20,640 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 04:27:20,640 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 04:27:20,640 INFO L902 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2022-07-12 04:27:20,640 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-07-12 04:27:20,640 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 04:27:20,640 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 .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 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 100) .cse0 (not (<= (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6)) |ULTIMATE.start_main_~a~0#1|)) .cse1 .cse2 .cse3 .cse4) (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 04:27:20,641 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-12 04:27:20,641 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_~a~0#1| 100) (= |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)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:27:20,641 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_~a~0#1| 100) (= |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)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-12 04:27:20,641 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-07-12 04:27:20,641 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-07-12 04:27:20,641 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-07-12 04:27:20,641 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-07-12 04:27:20,642 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-07-12 04:27:20,642 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-12 04:27:20,644 INFO L356 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1, 1, 1, 1] [2022-07-12 04:27:20,646 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 04:27:20,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 04:27:20 BoogieIcfgContainer [2022-07-12 04:27:20,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 04:27:20,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 04:27:20,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 04:27:20,658 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 04:27:20,658 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:26:21" (3/4) ... [2022-07-12 04:27:20,661 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 04:27:20,666 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-12 04:27:20,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-12 04:27:20,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 04:27:20,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 04:27:20,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 04:27:20,696 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 04:27:20,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 04:27:20,697 INFO L158 Benchmark]: Toolchain (without parser) took 59261.08ms. Allocated memory was 96.5MB in the beginning and 192.9MB in the end (delta: 96.5MB). Free memory was 58.3MB in the beginning and 107.8MB in the end (delta: -49.5MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. [2022-07-12 04:27:20,697 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:27:20,697 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.74ms. Allocated memory is still 96.5MB. Free memory was 58.1MB in the beginning and 47.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 04:27:20,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.04ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 47.6MB in the beginning and 110.1MB in the end (delta: -62.5MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-07-12 04:27:20,698 INFO L158 Benchmark]: Boogie Preprocessor took 19.55ms. Allocated memory is still 132.1MB. Free memory was 110.0MB in the beginning and 110.0MB in the end (delta: 12.4kB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-07-12 04:27:20,698 INFO L158 Benchmark]: RCFGBuilder took 223.76ms. Allocated memory is still 132.1MB. Free memory was 110.0MB in the beginning and 100.4MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 04:27:20,699 INFO L158 Benchmark]: TraceAbstraction took 58697.41ms. Allocated memory was 132.1MB in the beginning and 192.9MB in the end (delta: 60.8MB). Free memory was 99.5MB in the beginning and 109.9MB in the end (delta: -10.3MB). Peak memory consumption was 106.1MB. Max. memory is 16.1GB. [2022-07-12 04:27:20,699 INFO L158 Benchmark]: Witness Printer took 38.44ms. Allocated memory is still 192.9MB. Free memory was 109.9MB in the beginning and 107.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:27:20,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.74ms. Allocated memory is still 96.5MB. Free memory was 58.1MB in the beginning and 47.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.04ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 47.6MB in the beginning and 110.1MB in the end (delta: -62.5MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.55ms. Allocated memory is still 132.1MB. Free memory was 110.0MB in the beginning and 110.0MB in the end (delta: 12.4kB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * RCFGBuilder took 223.76ms. Allocated memory is still 132.1MB. Free memory was 110.0MB in the beginning and 100.4MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 58697.41ms. Allocated memory was 132.1MB in the beginning and 192.9MB in the end (delta: 60.8MB). Free memory was 99.5MB in the beginning and 109.9MB in the end (delta: -10.3MB). Peak memory consumption was 106.1MB. Max. memory is 16.1GB. * Witness Printer took 38.44ms. Allocated memory is still 192.9MB. Free memory was 109.9MB in the beginning and 107.8MB in the end (delta: 2.1MB). 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: 58.6s, OverallIterations: 15, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 27.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 23.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 1530 SdHoareTripleChecker+Invalid, 23.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1013 mSDsCounter, 319 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2082 IncrementalHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 319 mSolverCounterUnsat, 517 mSDtfsCounter, 2082 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1373 GetRequests, 1225 SyntacticMatches, 13 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 10.1s 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, 944 HoareAnnotationTreeSize, 65 FomulaSimplifications, 12115 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 14 FomulaSimplificationsInter, 16431 FormulaSimplificationTreeSizeReductionInter, 4.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 21.6s InterpolantComputationTime, 865 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1182 ConstructedInterpolants, 0 QuantifiedInterpolants, 5615 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1687 ConjunctsInSsa, 239 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) && a <= 100) && y == 3 * n + 3 * (n * n) + 1) && z == 6 + 6 * n) && n <= a + 1) && 0 <= a - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-12 04:27:20,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE