./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 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/hard2_valuebound2.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 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-15 00:17:41,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 00:17:41,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 00:17:41,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 00:17:41,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 00:17:41,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 00:17:41,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 00:17:41,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 00:17:41,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 00:17:41,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 00:17:41,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 00:17:41,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 00:17:41,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 00:17:41,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 00:17:41,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 00:17:41,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 00:17:41,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 00:17:41,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 00:17:41,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 00:17:41,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 00:17:41,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 00:17:41,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 00:17:41,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 00:17:41,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 00:17:41,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 00:17:41,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 00:17:41,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 00:17:41,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 00:17:41,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 00:17:41,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 00:17:41,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 00:17:41,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 00:17:41,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 00:17:41,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 00:17:41,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 00:17:41,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 00:17:41,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 00:17:41,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 00:17:41,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 00:17:41,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 00:17:41,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 00:17:41,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 00:17:41,905 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 00:17:41,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 00:17:41,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 00:17:41,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 00:17:41,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 00:17:41,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 00:17:41,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 00:17:41,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 00:17:41,909 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 00:17:41,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 00:17:41,910 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 00:17:41,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 00:17:41,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 00:17:41,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 00:17:41,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 00:17:41,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 00:17:41,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 00:17:41,912 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 00:17:41,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 00:17:41,912 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 00:17:41,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 00:17:41,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 00:17:41,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 00:17:41,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 00:17:41,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 00:17:41,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 00:17:41,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 00:17:41,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 00:17:41,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 00:17:41,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 00:17:41,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 00:17:41,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 00:17:41,915 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 00:17:41,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 00:17:41,915 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 00:17:41,916 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 [2023-02-15 00:17:42,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 00:17:42,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 00:17:42,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 00:17:42,170 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 00:17:42,170 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 00:17:42,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2023-02-15 00:17:43,306 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 00:17:43,479 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 00:17:43,480 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2023-02-15 00:17:43,486 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6db94f421/43545271908346ab9e920d06242bd4b4/FLAGabced7567 [2023-02-15 00:17:43,501 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6db94f421/43545271908346ab9e920d06242bd4b4 [2023-02-15 00:17:43,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 00:17:43,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 00:17:43,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 00:17:43,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 00:17:43,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 00:17:43,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ccd620d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43, skipping insertion in model container [2023-02-15 00:17:43,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 00:17:43,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 00:17:43,661 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2023-02-15 00:17:43,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 00:17:43,682 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 00:17:43,692 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2023-02-15 00:17:43,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 00:17:43,707 INFO L208 MainTranslator]: Completed translation [2023-02-15 00:17:43,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43 WrapperNode [2023-02-15 00:17:43,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 00:17:43,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 00:17:43,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 00:17:43,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 00:17:43,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,730 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-02-15 00:17:43,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 00:17:43,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 00:17:43,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 00:17:43,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 00:17:43,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,755 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 00:17:43,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 00:17:43,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 00:17:43,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 00:17:43,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (1/1) ... [2023-02-15 00:17:43,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 00:17:43,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:17:43,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 00:17:43,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 00:17:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 00:17:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 00:17:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 00:17:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 00:17:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 00:17:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 00:17:43,866 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 00:17:43,867 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 00:17:43,978 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 00:17:43,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 00:17:43,984 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 00:17:43,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:17:43 BoogieIcfgContainer [2023-02-15 00:17:43,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 00:17:43,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 00:17:43,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 00:17:43,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 00:17:43,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:17:43" (1/3) ... [2023-02-15 00:17:43,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fa279f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:17:43, skipping insertion in model container [2023-02-15 00:17:43,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:17:43" (2/3) ... [2023-02-15 00:17:43,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fa279f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:17:43, skipping insertion in model container [2023-02-15 00:17:43,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:17:43" (3/3) ... [2023-02-15 00:17:43,991 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.c [2023-02-15 00:17:44,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 00:17:44,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 00:17:44,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 00:17:44,053 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e9a83d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 00:17:44,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 00:17:44,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 00:17:44,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 00:17:44,067 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:44,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:44,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:44,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2023-02-15 00:17:44,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:44,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311066438] [2023-02-15 00:17:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:44,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:17:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:17:44,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:17:44,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311066438] [2023-02-15 00:17:44,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311066438] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:17:44,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:17:44,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 00:17:44,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550300084] [2023-02-15 00:17:44,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:17:44,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 00:17:44,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:17:44,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 00:17:44,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 00:17:44,291 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:17:44,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:17:44,332 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2023-02-15 00:17:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 00:17:44,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 00:17:44,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:17:44,341 INFO L225 Difference]: With dead ends: 49 [2023-02-15 00:17:44,341 INFO L226 Difference]: Without dead ends: 22 [2023-02-15 00:17:44,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 00:17:44,348 INFO L413 NwaCegarLoop]: 34 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, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:17:44,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:17:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-15 00:17:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-15 00:17:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 00:17:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-02-15 00:17:44,382 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2023-02-15 00:17:44,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:17:44,384 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-02-15 00:17:44,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:17:44,384 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-02-15 00:17:44,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 00:17:44,386 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:44,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:44,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 00:17:44,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2023-02-15 00:17:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:44,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740025438] [2023-02-15 00:17:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:44,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:17:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:17:44,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:17:44,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740025438] [2023-02-15 00:17:44,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740025438] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:17:44,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:17:44,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 00:17:44,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646929967] [2023-02-15 00:17:44,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:17:44,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:17:44,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:17:44,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:17:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:17:44,590 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:17:44,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:17:44,683 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2023-02-15 00:17:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 00:17:44,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 00:17:44,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:17:44,695 INFO L225 Difference]: With dead ends: 35 [2023-02-15 00:17:44,695 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 00:17:44,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 00:17:44,697 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:17:44,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:17:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 00:17:44,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2023-02-15 00:17:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 00:17:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-02-15 00:17:44,707 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2023-02-15 00:17:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:17:44,708 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-02-15 00:17:44,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:17:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-02-15 00:17:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 00:17:44,709 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:44,709 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:44,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 00:17:44,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:44,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:44,710 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2023-02-15 00:17:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:44,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729011137] [2023-02-15 00:17:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:44,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:17:44,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 00:17:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:17:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:17:44,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:17:44,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729011137] [2023-02-15 00:17:44,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729011137] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:17:44,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:17:44,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 00:17:44,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518686540] [2023-02-15 00:17:44,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:17:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:17:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:17:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:17:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:17:44,866 INFO L87 Difference]: Start difference. First operand 26 states and 33 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) [2023-02-15 00:17:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:17:44,922 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2023-02-15 00:17:44,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 00:17:44,923 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 [2023-02-15 00:17:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:17:44,924 INFO L225 Difference]: With dead ends: 39 [2023-02-15 00:17:44,924 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 00:17:44,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 00:17:44,926 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:17:44,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:17:44,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 00:17:44,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2023-02-15 00:17:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 00:17:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-02-15 00:17:44,934 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2023-02-15 00:17:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:17:44,934 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-02-15 00:17:44,934 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) [2023-02-15 00:17:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-02-15 00:17:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 00:17:44,935 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:44,935 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:44,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 00:17:44,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:44,937 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2023-02-15 00:17:44,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:44,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444415683] [2023-02-15 00:17:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:44,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:44,958 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:17:44,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218596846] [2023-02-15 00:17:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:44,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:17:44,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 00:17:44,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 00:17:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:17:45,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 00:17:45,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:17:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:17:45,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:17:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:17:45,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:17:45,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444415683] [2023-02-15 00:17:45,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:17:45,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218596846] [2023-02-15 00:17:45,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218596846] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:17:45,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:17:45,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-15 00:17:45,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773511221] [2023-02-15 00:17:45,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:17:45,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 00:17:45,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:17:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 00:17:45,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-15 00:17:45,343 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 00:17:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:17:45,635 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2023-02-15 00:17:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 00:17:45,636 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2023-02-15 00:17:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:17:45,638 INFO L225 Difference]: With dead ends: 65 [2023-02-15 00:17:45,638 INFO L226 Difference]: Without dead ends: 51 [2023-02-15 00:17:45,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 00:17:45,640 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 00:17:45,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 60 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 00:17:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-15 00:17:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-15 00:17:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-15 00:17:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2023-02-15 00:17:45,663 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 19 [2023-02-15 00:17:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:17:45,663 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2023-02-15 00:17:45,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 00:17:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2023-02-15 00:17:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 00:17:45,664 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:45,665 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:45,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 00:17:45,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:45,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:45,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:45,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2023-02-15 00:17:45,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:45,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863649324] [2023-02-15 00:17:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:45,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:45,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:17:45,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889911333] [2023-02-15 00:17:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:45,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:45,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:17:45,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 00:17:45,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 00:17:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:17:45,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 00:17:45,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:17:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 00:17:46,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:17:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 00:17:46,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:17:46,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863649324] [2023-02-15 00:17:46,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:17:46,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889911333] [2023-02-15 00:17:46,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889911333] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:17:46,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:17:46,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-15 00:17:46,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439184370] [2023-02-15 00:17:46,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:17:46,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 00:17:46,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:17:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 00:17:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-15 00:17:46,163 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-15 00:17:46,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:17:46,309 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2023-02-15 00:17:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 00:17:46,310 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2023-02-15 00:17:46,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:17:46,311 INFO L225 Difference]: With dead ends: 66 [2023-02-15 00:17:46,311 INFO L226 Difference]: Without dead ends: 59 [2023-02-15 00:17:46,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-02-15 00:17:46,313 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:17:46,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 80 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:17:46,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-15 00:17:46,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2023-02-15 00:17:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 00:17:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2023-02-15 00:17:46,343 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 26 [2023-02-15 00:17:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:17:46,343 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2023-02-15 00:17:46,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-15 00:17:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2023-02-15 00:17:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 00:17:46,345 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:46,345 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:46,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 00:17:46,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:46,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:46,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2023-02-15 00:17:46,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:46,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760521039] [2023-02-15 00:17:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:46,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:46,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:17:46,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035677366] [2023-02-15 00:17:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:46,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:46,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:17:46,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 00:17:46,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 00:17:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:17:46,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 00:17:46,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:17:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-15 00:17:46,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:17:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-15 00:17:47,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:17:47,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760521039] [2023-02-15 00:17:47,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:17:47,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035677366] [2023-02-15 00:17:47,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035677366] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:17:47,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:17:47,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-02-15 00:17:47,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950756271] [2023-02-15 00:17:47,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:17:47,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 00:17:47,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:17:47,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 00:17:47,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-02-15 00:17:47,515 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-02-15 00:17:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:17:50,051 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2023-02-15 00:17:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 00:17:50,052 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 56 [2023-02-15 00:17:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:17:50,053 INFO L225 Difference]: With dead ends: 142 [2023-02-15 00:17:50,053 INFO L226 Difference]: Without dead ends: 111 [2023-02-15 00:17:50,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-02-15 00:17:50,054 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:17:50,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 94 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 00:17:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-15 00:17:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2023-02-15 00:17:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.203125) internal successors, (77), 71 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 24 states have call predecessors, (30), 30 states have call successors, (30) [2023-02-15 00:17:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions. [2023-02-15 00:17:50,104 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 56 [2023-02-15 00:17:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:17:50,104 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions. [2023-02-15 00:17:50,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-02-15 00:17:50,105 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions. [2023-02-15 00:17:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-15 00:17:50,112 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:50,112 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:50,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 00:17:50,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:50,318 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:50,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:50,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2023-02-15 00:17:50,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:50,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491147749] [2023-02-15 00:17:50,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:50,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:50,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:17:50,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994298362] [2023-02-15 00:17:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:50,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:50,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:17:50,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 00:17:50,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 00:17:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:17:50,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-15 00:17:50,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:17:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-15 00:17:50,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:17:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-15 00:17:50,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:17:50,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491147749] [2023-02-15 00:17:50,982 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:17:50,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994298362] [2023-02-15 00:17:50,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994298362] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:17:50,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:17:50,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-15 00:17:50,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294914449] [2023-02-15 00:17:50,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:17:50,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 00:17:50,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:17:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 00:17:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-02-15 00:17:50,985 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-02-15 00:17:53,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 00:17:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:17:53,158 INFO L93 Difference]: Finished difference Result 161 states and 210 transitions. [2023-02-15 00:17:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 00:17:53,158 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 67 [2023-02-15 00:17:53,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:17:53,160 INFO L225 Difference]: With dead ends: 161 [2023-02-15 00:17:53,160 INFO L226 Difference]: Without dead ends: 123 [2023-02-15 00:17:53,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-02-15 00:17:53,161 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 25 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:17:53,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 87 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-15 00:17:53,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-02-15 00:17:53,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2023-02-15 00:17:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-02-15 00:17:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2023-02-15 00:17:53,193 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 67 [2023-02-15 00:17:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:17:53,194 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2023-02-15 00:17:53,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-02-15 00:17:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2023-02-15 00:17:53,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-15 00:17:53,196 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:53,196 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:53,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 00:17:53,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:53,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:53,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1728532070, now seen corresponding path program 1 times [2023-02-15 00:17:53,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:53,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485240319] [2023-02-15 00:17:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:53,417 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:17:53,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364372669] [2023-02-15 00:17:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:53,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:53,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:17:53,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 00:17:53,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 00:17:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:17:53,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 00:17:53,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:17:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-15 00:17:53,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:17:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-15 00:17:53,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:17:53,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485240319] [2023-02-15 00:17:53,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:17:53,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364372669] [2023-02-15 00:17:53,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364372669] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:17:53,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:17:53,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-15 00:17:53,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025728797] [2023-02-15 00:17:53,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:17:53,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 00:17:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:17:53,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 00:17:53,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-02-15 00:17:53,979 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2023-02-15 00:17:54,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:17:54,375 INFO L93 Difference]: Finished difference Result 117 states and 139 transitions. [2023-02-15 00:17:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 00:17:54,376 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 72 [2023-02-15 00:17:54,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:17:54,377 INFO L225 Difference]: With dead ends: 117 [2023-02-15 00:17:54,377 INFO L226 Difference]: Without dead ends: 86 [2023-02-15 00:17:54,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-02-15 00:17:54,378 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 00:17:54,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 92 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 00:17:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-15 00:17:54,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-02-15 00:17:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 57 states have internal predecessors, (60), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-15 00:17:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2023-02-15 00:17:54,399 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 72 [2023-02-15 00:17:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:17:54,400 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2023-02-15 00:17:54,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2023-02-15 00:17:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2023-02-15 00:17:54,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-15 00:17:54,401 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:54,401 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:54,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 00:17:54,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:54,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:54,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1412721000, now seen corresponding path program 1 times [2023-02-15 00:17:54,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:54,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072825879] [2023-02-15 00:17:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:54,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:54,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:17:54,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049143030] [2023-02-15 00:17:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:54,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:54,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:17:54,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 00:17:54,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 00:17:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:17:54,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 00:17:54,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:17:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-02-15 00:17:54,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:17:54,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:17:54,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072825879] [2023-02-15 00:17:54,781 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:17:54,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049143030] [2023-02-15 00:17:54,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049143030] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:17:54,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:17:54,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 00:17:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152339312] [2023-02-15 00:17:54,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:17:54,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 00:17:54,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:17:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 00:17:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 00:17:54,783 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-02-15 00:17:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:17:54,949 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2023-02-15 00:17:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 00:17:54,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2023-02-15 00:17:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:17:54,951 INFO L225 Difference]: With dead ends: 116 [2023-02-15 00:17:54,951 INFO L226 Difference]: Without dead ends: 86 [2023-02-15 00:17:54,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 00:17:54,952 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:17:54,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:17:54,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-15 00:17:54,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2023-02-15 00:17:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-15 00:17:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2023-02-15 00:17:54,971 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 86 [2023-02-15 00:17:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:17:54,971 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2023-02-15 00:17:54,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-02-15 00:17:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2023-02-15 00:17:54,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-15 00:17:54,973 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:54,973 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:54,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 00:17:55,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:55,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:55,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:55,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times [2023-02-15 00:17:55,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:55,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987831572] [2023-02-15 00:17:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:55,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:55,215 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:17:55,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466837025] [2023-02-15 00:17:55,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 00:17:55,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:55,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:17:55,219 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 00:17:55,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 00:17:55,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 00:17:55,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:17:55,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 00:17:55,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:17:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-02-15 00:17:55,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:17:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-02-15 00:17:56,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:17:56,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987831572] [2023-02-15 00:17:56,120 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:17:56,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466837025] [2023-02-15 00:17:56,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466837025] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:17:56,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:17:56,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2023-02-15 00:17:56,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338421098] [2023-02-15 00:17:56,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:17:56,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 00:17:56,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:17:56,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 00:17:56,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-02-15 00:17:56,123 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-15 00:17:56,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:17:56,484 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2023-02-15 00:17:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 00:17:56,485 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 86 [2023-02-15 00:17:56,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:17:56,486 INFO L225 Difference]: With dead ends: 124 [2023-02-15 00:17:56,486 INFO L226 Difference]: Without dead ends: 76 [2023-02-15 00:17:56,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-02-15 00:17:56,487 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 62 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 00:17:56,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 134 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 00:17:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-15 00:17:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-02-15 00:17:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 50 states have internal predecessors, (50), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 00:17:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2023-02-15 00:17:56,504 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 86 [2023-02-15 00:17:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:17:56,505 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2023-02-15 00:17:56,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-15 00:17:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2023-02-15 00:17:56,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-02-15 00:17:56,506 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:17:56,506 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:17:56,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 00:17:56,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:56,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:17:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:17:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1373298297, now seen corresponding path program 2 times [2023-02-15 00:17:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:17:56,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430912326] [2023-02-15 00:17:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:17:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:17:56,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:17:56,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565221998] [2023-02-15 00:17:56,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 00:17:56,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:17:56,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:17:56,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 00:17:56,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 00:17:56,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 00:17:56,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:17:56,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 00:17:56,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:17:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-02-15 00:17:57,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:18:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-02-15 00:18:23,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:18:23,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430912326] [2023-02-15 00:18:23,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:18:23,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565221998] [2023-02-15 00:18:23,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565221998] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:18:23,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:18:23,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-02-15 00:18:23,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017350472] [2023-02-15 00:18:23,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:18:23,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-15 00:18:23,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:18:23,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-15 00:18:23,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-02-15 00:18:23,545 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2023-02-15 00:18:23,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:18:23,982 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2023-02-15 00:18:23,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 00:18:23,982 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) Word has length 91 [2023-02-15 00:18:23,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:18:23,983 INFO L225 Difference]: With dead ends: 86 [2023-02-15 00:18:23,983 INFO L226 Difference]: Without dead ends: 82 [2023-02-15 00:18:23,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-02-15 00:18:23,984 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 00:18:23,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 162 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 00:18:23,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-15 00:18:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-02-15 00:18:24,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.0) internal successors, (54), 54 states have internal predecessors, (54), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 00:18:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2023-02-15 00:18:24,002 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 91 [2023-02-15 00:18:24,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:18:24,002 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2023-02-15 00:18:24,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2023-02-15 00:18:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2023-02-15 00:18:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-15 00:18:24,003 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:18:24,003 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:18:24,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 00:18:24,209 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,SelfDestructingSolverStorable10 [2023-02-15 00:18:24,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:18:24,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:18:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1231859808, now seen corresponding path program 1 times [2023-02-15 00:18:24,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:18:24,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535606651] [2023-02-15 00:18:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:18:24,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:18:24,222 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:18:24,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852480973] [2023-02-15 00:18:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:18:24,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:18:24,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:18:24,223 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 00:18:24,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 00:18:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:18:24,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-15 00:18:24,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:18:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 67 proven. 69 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-02-15 00:18:24,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:18:35,175 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 00:18:35,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:18:35,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535606651] [2023-02-15 00:18:35,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:18:35,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852480973] [2023-02-15 00:18:35,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852480973] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 00:18:35,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 00:18:35,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-02-15 00:18:35,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831157972] [2023-02-15 00:18:35,418 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 00:18:35,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 00:18:35,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:18:35,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 00:18:35,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=339, Unknown=1, NotChecked=0, Total=420 [2023-02-15 00:18:35,420 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2023-02-15 00:18:35,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:18:35,831 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2023-02-15 00:18:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 00:18:35,831 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 97 [2023-02-15 00:18:35,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:18:35,832 INFO L225 Difference]: With dead ends: 82 [2023-02-15 00:18:35,832 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 00:18:35,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=106, Invalid=445, Unknown=1, NotChecked=0, Total=552 [2023-02-15 00:18:35,833 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 9 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 00:18:35,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 131 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 00:18:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 00:18:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 00:18:35,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:18:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 00:18:35,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 97 [2023-02-15 00:18:35,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:18:35,834 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 00:18:35,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2023-02-15 00:18:35,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 00:18:35,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 00:18:35,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 00:18:35,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 00:18:36,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:18:36,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 00:18:44,773 WARN L233 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 112 DAG size of output: 14 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-02-15 00:18:45,448 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2023-02-15 00:18:45,449 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 44 56) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|))) (let ((.cse7 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= .cse11 |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse4 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse6 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse10 (= 2 |ULTIMATE.start_main_~d~0#1|))) (or (let ((.cse5 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) .cse4 |ULTIMATE.start_main_~r~0#1|) (+ .cse5 |ULTIMATE.start_main_~A~0#1|)) .cse6 (<= .cse5 |ULTIMATE.start_main_~r~0#1|))) (and .cse7 .cse8 .cse9 .cse3 .cse6) (and .cse0 (= |ULTIMATE.start_main_~A~0#1| (+ .cse4 |ULTIMATE.start_main_~r~0#1|)) .cse7 .cse8 (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= |ULTIMATE.start_main_~q~0#1| 2) .cse6 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (and (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse8 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse6) (and .cse9 .cse2 .cse3 .cse6 .cse10) (let ((.cse12 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (and .cse0 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ .cse4 .cse11 |ULTIMATE.start_main_~r~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) (<= (* 2 |ULTIMATE.start_main_~B~0#1|) .cse12) .cse1 (<= .cse12 |ULTIMATE.start_main_~A~0#1|) .cse6 .cse10))))) [2023-02-15 00:18:45,449 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-15 00:18:45,449 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (and (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) [2023-02-15 00:18:45,449 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 61) the Hoare annotation is: true [2023-02-15 00:18:45,449 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse7 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse5 (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5 .cse7 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse6 .cse1 .cse3 .cse5 .cse7))) [2023-02-15 00:18:45,449 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 00:18:45,449 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 00:18:45,449 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|))) (let ((.cse7 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= .cse11 |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse4 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse6 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse10 (= 2 |ULTIMATE.start_main_~d~0#1|))) (or (let ((.cse5 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) .cse4 |ULTIMATE.start_main_~r~0#1|) (+ .cse5 |ULTIMATE.start_main_~A~0#1|)) .cse6 (<= .cse5 |ULTIMATE.start_main_~r~0#1|))) (and .cse7 .cse8 .cse9 .cse3 .cse6) (and .cse0 (= |ULTIMATE.start_main_~A~0#1| (+ .cse4 |ULTIMATE.start_main_~r~0#1|)) .cse7 .cse8 (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= |ULTIMATE.start_main_~q~0#1| 2) .cse6 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (and (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse8 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse6) (and .cse9 .cse2 .cse3 .cse6 .cse10) (let ((.cse12 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (and .cse0 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ .cse4 .cse11 |ULTIMATE.start_main_~r~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) (<= (* 2 |ULTIMATE.start_main_~B~0#1|) .cse12) .cse1 (<= .cse12 |ULTIMATE.start_main_~A~0#1|) .cse6 .cse10))))) [2023-02-15 00:18:45,449 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-15 00:18:45,450 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|))) (let ((.cse7 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= .cse11 |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse4 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse6 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse10 (= 2 |ULTIMATE.start_main_~d~0#1|))) (or (let ((.cse5 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) .cse4 |ULTIMATE.start_main_~r~0#1|) (+ .cse5 |ULTIMATE.start_main_~A~0#1|)) .cse6 (<= .cse5 |ULTIMATE.start_main_~r~0#1|))) (and .cse7 .cse8 .cse9 .cse3 .cse6) (and .cse0 (= |ULTIMATE.start_main_~A~0#1| (+ .cse4 |ULTIMATE.start_main_~r~0#1|)) .cse7 .cse8 (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse1 .cse6 (<= (+ (* 2 |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse8 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse6) (and .cse9 .cse2 .cse3 .cse6 .cse10) (let ((.cse12 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (and .cse0 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ .cse4 .cse11 |ULTIMATE.start_main_~r~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) (<= (* 2 |ULTIMATE.start_main_~B~0#1|) .cse12) .cse1 (<= .cse12 |ULTIMATE.start_main_~A~0#1|) .cse6 .cse10))))) [2023-02-15 00:18:45,450 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2023-02-15 00:18:45,450 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 00:18:45,450 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|))) (or (and .cse0 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1)))) [2023-02-15 00:18:45,450 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2023-02-15 00:18:45,450 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 00:18:45,450 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse7 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse5 (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5 .cse7 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse6 .cse1 .cse3 .cse5 .cse7))) [2023-02-15 00:18:45,450 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-02-15 00:18:45,450 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse7 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse5 (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5 .cse7 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse6 .cse1 .cse3 .cse5 .cse7))) [2023-02-15 00:18:45,450 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse7 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~d~0#1| 4) (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse5 (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse6 .cse1 .cse2 .cse3 .cse5 .cse7 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse6 .cse1 .cse3 .cse5 .cse7))) [2023-02-15 00:18:45,450 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-15 00:18:45,450 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-15 00:18:45,450 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-15 00:18:45,451 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-15 00:18:45,451 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-15 00:18:45,451 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-15 00:18:45,453 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:18:45,454 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 00:18:45,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:18:45 BoogieIcfgContainer [2023-02-15 00:18:45,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 00:18:45,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 00:18:45,472 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 00:18:45,472 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 00:18:45,473 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:17:43" (3/4) ... [2023-02-15 00:18:45,475 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 00:18:45,481 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 00:18:45,484 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-02-15 00:18:45,485 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-02-15 00:18:45,485 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-15 00:18:45,486 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 00:18:45,486 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 00:18:45,522 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 00:18:45,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 00:18:45,523 INFO L158 Benchmark]: Toolchain (without parser) took 62018.42ms. Allocated memory was 119.5MB in the beginning and 180.4MB in the end (delta: 60.8MB). Free memory was 82.9MB in the beginning and 141.5MB in the end (delta: -58.5MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2023-02-15 00:18:45,523 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 00:18:45,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.96ms. Allocated memory is still 119.5MB. Free memory was 82.5MB in the beginning and 72.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 00:18:45,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.77ms. Allocated memory is still 119.5MB. Free memory was 72.2MB in the beginning and 70.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 00:18:45,525 INFO L158 Benchmark]: Boogie Preprocessor took 26.78ms. Allocated memory is still 119.5MB. Free memory was 70.5MB in the beginning and 69.7MB in the end (delta: 796.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 00:18:45,525 INFO L158 Benchmark]: RCFGBuilder took 226.58ms. Allocated memory is still 119.5MB. Free memory was 69.5MB in the beginning and 58.7MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 00:18:45,526 INFO L158 Benchmark]: TraceAbstraction took 61484.90ms. Allocated memory was 119.5MB in the beginning and 180.4MB in the end (delta: 60.8MB). Free memory was 57.9MB in the beginning and 143.6MB in the end (delta: -85.7MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. [2023-02-15 00:18:45,526 INFO L158 Benchmark]: Witness Printer took 50.69ms. Allocated memory is still 180.4MB. Free memory was 143.6MB in the beginning and 141.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 00:18:45,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.96ms. Allocated memory is still 119.5MB. Free memory was 82.5MB in the beginning and 72.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.77ms. Allocated memory is still 119.5MB. Free memory was 72.2MB in the beginning and 70.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.78ms. Allocated memory is still 119.5MB. Free memory was 70.5MB in the beginning and 69.7MB in the end (delta: 796.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 226.58ms. Allocated memory is still 119.5MB. Free memory was 69.5MB in the beginning and 58.7MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 61484.90ms. Allocated memory was 119.5MB in the beginning and 180.4MB in the end (delta: 60.8MB). Free memory was 57.9MB in the beginning and 143.6MB in the end (delta: -85.7MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. * Witness Printer took 50.69ms. Allocated memory is still 180.4MB. Free memory was 143.6MB in the beginning and 141.5MB 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, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.4s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 255 mSDsluCounter, 1149 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 800 mSDsCounter, 316 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2538 IncrementalHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 316 mSolverCounterUnsat, 349 mSDtfsCounter, 2538 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1078 GetRequests, 920 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=6, InterpolantAutomatonStates: 105, 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, 12 MinimizatonAttempts, 50 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 92 PreInvPairs, 132 NumberOfFragments, 930 HoareAnnotationTreeSize, 92 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 7768 FormulaSimplificationTreeSizeReductionInter, 9.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 41.7s InterpolantComputationTime, 632 NumberOfCodeBlocks, 632 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1030 ConstructedInterpolants, 0 QuantifiedInterpolants, 14168 SizeOfPredicates, 42 NumberOfNonLiveVariables, 1610 ConjunctsInSsa, 250 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 3205/3644 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: 44]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && A <= 2) && B * p == d) && A == r) && d == 4) && B * (p / 2) + B * q + r == d / 2 + A) && B == 1) && d / 2 <= r) || ((((p == 1 && B == d) && q == 0) && A == r) && B == 1)) || ((((((((cond == 1 && A == B * q + r) && p == 1) && B == d) && 0 <= r) && r <= 0) && q <= 2) && B == 1) && 0 <= A)) || ((((B + r == A && B == d) && p == q) && q == 1) && B == 1)) || ((((q == 0 && B * p == d) && A == r) && B == 1) && 2 == d)) || (((((((cond == 1 && A + d == B * q + B * p + r) && 2 == p) && 2 * B <= d + r) && A <= 2) && d + r <= A) && B == 1) && 2 == d) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && A <= 2) && B * p == d) && A == r) && d == 4) && B * (p / 2) + B * q + r == d / 2 + A) && B == 1) && d / 2 <= r) || (((((((cond == 1 && q == 0) && A <= 2) && B * p == d) && A == r) && B == 1) && 0 <= A) && 2 == d)) || (((((((cond == 1 && p == 1) && B == d) && q == 0) && A <= 2) && A == r) && B == 1) && 0 <= A) RESULT: Ultimate proved your program to be correct! [2023-02-15 00:18:45,592 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