./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/recursive-simple/fibo_2calls_6-1.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 e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:07:42,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:07:42,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:07:42,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:07:42,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:07:42,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:07:42,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:07:42,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:07:42,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:07:42,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:07:42,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:07:42,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:07:42,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:07:42,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:07:42,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:07:42,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:07:42,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:07:42,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:07:42,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:07:42,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:07:42,730 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:07:42,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:07:42,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:07:42,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:07:42,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:07:42,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:07:42,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:07:42,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:07:42,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:07:42,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:07:42,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:07:42,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:07:42,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:07:42,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:07:42,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:07:42,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:07:42,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:07:42,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:07:42,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:07:42,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:07:42,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:07:42,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:07:42,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:07:42,786 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:07:42,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:07:42,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:07:42,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:07:42,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:07:42,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:07:42,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:07:42,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:07:42,790 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:07:42,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:07:42,791 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:07:42,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:07:42,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:07:42,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:07:42,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:07:42,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:07:42,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:07:42,792 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:07:42,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:07:42,792 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:07:42,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:07:42,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:07:42,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:07:42,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:07:42,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:07:42,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:07:42,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:07:42,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:07:42,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:07:42,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:07:42,795 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:07:42,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:07:42,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:07:42,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe [2022-07-21 05:07:43,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:07:43,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:07:43,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:07:43,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:07:43,155 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:07:43,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2022-07-21 05:07:43,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/335cd5309/3dbbbcabf7ea48be85e9f1efcf7e3361/FLAG7158e93aa [2022-07-21 05:07:43,597 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:07:43,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2022-07-21 05:07:43,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/335cd5309/3dbbbcabf7ea48be85e9f1efcf7e3361/FLAG7158e93aa [2022-07-21 05:07:44,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/335cd5309/3dbbbcabf7ea48be85e9f1efcf7e3361 [2022-07-21 05:07:44,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:07:44,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:07:44,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:07:44,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:07:44,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:07:44,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550c0537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44, skipping insertion in model container [2022-07-21 05:07:44,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:07:44,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:07:44,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2022-07-21 05:07:44,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:07:44,176 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:07:44,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2022-07-21 05:07:44,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:07:44,197 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:07:44,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44 WrapperNode [2022-07-21 05:07:44,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:07:44,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:07:44,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:07:44,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:07:44,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,257 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-07-21 05:07:44,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:07:44,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:07:44,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:07:44,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:07:44,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:07:44,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:07:44,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:07:44,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:07:44,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (1/1) ... [2022-07-21 05:07:44,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:07:44,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:44,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:07:44,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:07:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:07:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:07:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-07-21 05:07:44,350 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-07-21 05:07:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-07-21 05:07:44,351 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-07-21 05:07:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:07:44,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:07:44,404 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:07:44,405 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:07:44,545 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:07:44,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:07:44,567 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:07:44,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:07:44 BoogieIcfgContainer [2022-07-21 05:07:44,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:07:44,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:07:44,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:07:44,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:07:44,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:07:44" (1/3) ... [2022-07-21 05:07:44,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64abf339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:07:44, skipping insertion in model container [2022-07-21 05:07:44,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:44" (2/3) ... [2022-07-21 05:07:44,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64abf339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:07:44, skipping insertion in model container [2022-07-21 05:07:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:07:44" (3/3) ... [2022-07-21 05:07:44,576 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2022-07-21 05:07:44,600 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:07:44,601 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:07:44,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:07:44,666 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43eb71f6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@30cfade0 [2022-07-21 05:07:44,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:07:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-21 05:07:44,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 05:07:44,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:44,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:44,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2022-07-21 05:07:44,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:44,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550241758] [2022-07-21 05:07:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:44,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:44,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:07:44,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:44,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550241758] [2022-07-21 05:07:44,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550241758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:07:44,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:07:44,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:07:44,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333968036] [2022-07-21 05:07:44,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:07:44,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:07:44,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:44,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:07:44,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:07:44,956 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:07:45,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:45,028 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-07-21 05:07:45,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:07:45,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-07-21 05:07:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:45,035 INFO L225 Difference]: With dead ends: 39 [2022-07-21 05:07:45,036 INFO L226 Difference]: Without dead ends: 27 [2022-07-21 05:07:45,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:07:45,045 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:45,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 82 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:07:45,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-21 05:07:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-21 05:07:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-21 05:07:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-07-21 05:07:45,076 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2022-07-21 05:07:45,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:45,077 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-07-21 05:07:45,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:07:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-07-21 05:07:45,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 05:07:45,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:45,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:45,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:07:45,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2022-07-21 05:07:45,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:45,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490494749] [2022-07-21 05:07:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:45,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:07:45,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:45,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490494749] [2022-07-21 05:07:45,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490494749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:07:45,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:07:45,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:07:45,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980780477] [2022-07-21 05:07:45,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:07:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:07:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:07:45,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:07:45,126 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:07:45,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:45,166 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-07-21 05:07:45,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:07:45,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-07-21 05:07:45,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:45,168 INFO L225 Difference]: With dead ends: 33 [2022-07-21 05:07:45,168 INFO L226 Difference]: Without dead ends: 29 [2022-07-21 05:07:45,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:07:45,170 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 70 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 [2022-07-21 05:07:45,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 70 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:07:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-21 05:07:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-07-21 05:07:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-21 05:07:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-07-21 05:07:45,183 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2022-07-21 05:07:45,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:45,183 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-07-21 05:07:45,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:07:45,184 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-07-21 05:07:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 05:07:45,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:45,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:45,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:07:45,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:45,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:45,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2022-07-21 05:07:45,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:45,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092845867] [2022-07-21 05:07:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:45,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:45,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 05:07:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:07:45,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:45,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092845867] [2022-07-21 05:07:45,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092845867] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:45,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641723889] [2022-07-21 05:07:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:45,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:45,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:45,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:45,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:07:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:45,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 05:07:45,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:07:45,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:07:45,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641723889] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:07:45,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:07:45,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2022-07-21 05:07:45,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500586696] [2022-07-21 05:07:45,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:45,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 05:07:45,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:45,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 05:07:45,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:07:45,703 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 05:07:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:45,956 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2022-07-21 05:07:45,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:07:45,957 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2022-07-21 05:07:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:45,961 INFO L225 Difference]: With dead ends: 55 [2022-07-21 05:07:45,961 INFO L226 Difference]: Without dead ends: 31 [2022-07-21 05:07:45,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:07:45,969 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:45,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 107 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:07:45,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-21 05:07:45,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-07-21 05:07:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-21 05:07:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-07-21 05:07:45,981 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2022-07-21 05:07:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:45,981 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-07-21 05:07:45,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 05:07:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-07-21 05:07:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 05:07:45,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:45,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:46,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 05:07:46,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:46,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2022-07-21 05:07:46,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:46,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612345192] [2022-07-21 05:07:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:46,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:46,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:46,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:46,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:46,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:07:46,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:46,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612345192] [2022-07-21 05:07:46,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612345192] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:46,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794521662] [2022-07-21 05:07:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:46,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:46,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:46,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:46,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 05:07:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:46,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 05:07:46,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:07:46,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:07:46,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794521662] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:07:46,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:07:46,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-07-21 05:07:46,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615344448] [2022-07-21 05:07:46,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:46,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 05:07:46,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:46,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 05:07:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:07:46,633 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 05:07:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:46,799 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2022-07-21 05:07:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:07:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 24 [2022-07-21 05:07:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:46,806 INFO L225 Difference]: With dead ends: 51 [2022-07-21 05:07:46,807 INFO L226 Difference]: Without dead ends: 47 [2022-07-21 05:07:46,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:07:46,808 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:46,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 83 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:07:46,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-21 05:07:46,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-07-21 05:07:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2022-07-21 05:07:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-07-21 05:07:46,820 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 24 [2022-07-21 05:07:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:46,821 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-07-21 05:07:46,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 05:07:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-07-21 05:07:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 05:07:46,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:46,823 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:46,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 05:07:47,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-21 05:07:47,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:47,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2022-07-21 05:07:47,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:47,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440425513] [2022-07-21 05:07:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:47,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:47,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:47,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:47,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 05:07:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:47,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 05:07:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 05:07:47,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:47,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440425513] [2022-07-21 05:07:47,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440425513] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:47,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472477271] [2022-07-21 05:07:47,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:47,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:47,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:47,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:47,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 05:07:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:47,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 05:07:47,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 05:07:47,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:07:47,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472477271] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:07:47,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:07:47,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2022-07-21 05:07:47,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763759347] [2022-07-21 05:07:47,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:47,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 05:07:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:47,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 05:07:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-21 05:07:47,577 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-21 05:07:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:47,831 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2022-07-21 05:07:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 05:07:47,832 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2022-07-21 05:07:47,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:47,834 INFO L225 Difference]: With dead ends: 105 [2022-07-21 05:07:47,834 INFO L226 Difference]: Without dead ends: 63 [2022-07-21 05:07:47,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-07-21 05:07:47,836 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 66 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:47,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 123 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:07:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-21 05:07:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-07-21 05:07:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (29), 13 states have call predecessors, (29), 12 states have call successors, (29) [2022-07-21 05:07:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 92 transitions. [2022-07-21 05:07:47,863 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 92 transitions. Word has length 36 [2022-07-21 05:07:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:47,864 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 92 transitions. [2022-07-21 05:07:47,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-21 05:07:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 92 transitions. [2022-07-21 05:07:47,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-21 05:07:47,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:47,866 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:47,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 05:07:48,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:48,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:48,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:48,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2022-07-21 05:07:48,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:48,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439422139] [2022-07-21 05:07:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:48,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:48,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:48,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:48,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 05:07:48,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:48,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439422139] [2022-07-21 05:07:48,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439422139] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:48,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315462222] [2022-07-21 05:07:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:48,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:48,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:48,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:48,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 05:07:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:48,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 05:07:48,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 05:07:48,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:07:48,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315462222] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:07:48,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:07:48,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2022-07-21 05:07:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713992909] [2022-07-21 05:07:48,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:48,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 05:07:48,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 05:07:48,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:07:48,589 INFO L87 Difference]: Start difference. First operand 63 states and 92 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-21 05:07:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:48,928 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions. [2022-07-21 05:07:48,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 05:07:48,929 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2022-07-21 05:07:48,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:48,931 INFO L225 Difference]: With dead ends: 177 [2022-07-21 05:07:48,931 INFO L226 Difference]: Without dead ends: 117 [2022-07-21 05:07:48,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2022-07-21 05:07:48,933 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 62 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:48,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 195 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:07:48,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-21 05:07:48,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2022-07-21 05:07:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 69 states have internal predecessors, (80), 21 states have call successors, (21), 7 states have call predecessors, (21), 15 states have return successors, (65), 26 states have call predecessors, (65), 21 states have call successors, (65) [2022-07-21 05:07:48,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 166 transitions. [2022-07-21 05:07:48,950 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 166 transitions. Word has length 37 [2022-07-21 05:07:48,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:48,951 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 166 transitions. [2022-07-21 05:07:48,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-21 05:07:48,951 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 166 transitions. [2022-07-21 05:07:48,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-21 05:07:48,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:48,954 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:48,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 05:07:49,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:49,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:49,176 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2022-07-21 05:07:49,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:49,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422577376] [2022-07-21 05:07:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:49,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:49,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:49,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:49,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:49,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:49,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:49,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 05:07:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 05:07:49,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:49,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422577376] [2022-07-21 05:07:49,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422577376] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:49,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275515032] [2022-07-21 05:07:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:49,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:49,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:49,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:49,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 05:07:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:49,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:07:49,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 05:07:49,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:07:49,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275515032] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:07:49,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:07:49,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2022-07-21 05:07:49,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039052247] [2022-07-21 05:07:49,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:49,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 05:07:49,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:49,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 05:07:49,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-07-21 05:07:49,898 INFO L87 Difference]: Start difference. First operand 103 states and 166 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) [2022-07-21 05:07:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:50,286 INFO L93 Difference]: Finished difference Result 255 states and 495 transitions. [2022-07-21 05:07:50,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 05:07:50,287 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) Word has length 51 [2022-07-21 05:07:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:50,292 INFO L225 Difference]: With dead ends: 255 [2022-07-21 05:07:50,293 INFO L226 Difference]: Without dead ends: 155 [2022-07-21 05:07:50,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2022-07-21 05:07:50,295 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 87 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:50,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 176 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:07:50,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-07-21 05:07:50,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2022-07-21 05:07:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 24 states have call successors, (24), 9 states have call predecessors, (24), 13 states have return successors, (66), 27 states have call predecessors, (66), 24 states have call successors, (66) [2022-07-21 05:07:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 177 transitions. [2022-07-21 05:07:50,338 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 177 transitions. Word has length 51 [2022-07-21 05:07:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:50,339 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 177 transitions. [2022-07-21 05:07:50,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) [2022-07-21 05:07:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 177 transitions. [2022-07-21 05:07:50,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 05:07:50,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:50,346 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:50,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 05:07:50,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:50,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:50,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:50,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1851863125, now seen corresponding path program 1 times [2022-07-21 05:07:50,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:50,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350265265] [2022-07-21 05:07:50,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:50,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:07:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:07:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 05:07:50,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:50,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350265265] [2022-07-21 05:07:50,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350265265] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:50,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630858091] [2022-07-21 05:07:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:50,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:50,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:50,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:50,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 05:07:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:50,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 05:07:50,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 05:07:50,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-21 05:07:51,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630858091] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:07:51,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:07:51,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2022-07-21 05:07:51,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557945615] [2022-07-21 05:07:51,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:51,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 05:07:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:51,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 05:07:51,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-21 05:07:51,575 INFO L87 Difference]: Start difference. First operand 109 states and 177 transitions. Second operand has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 23 states have internal predecessors, (73), 17 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (24), 11 states have call predecessors, (24), 17 states have call successors, (24) [2022-07-21 05:07:52,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:52,040 INFO L93 Difference]: Finished difference Result 240 states and 462 transitions. [2022-07-21 05:07:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 05:07:52,041 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 23 states have internal predecessors, (73), 17 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (24), 11 states have call predecessors, (24), 17 states have call successors, (24) Word has length 79 [2022-07-21 05:07:52,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:52,042 INFO L225 Difference]: With dead ends: 240 [2022-07-21 05:07:52,042 INFO L226 Difference]: Without dead ends: 107 [2022-07-21 05:07:52,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 05:07:52,044 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 107 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:52,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 177 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:07:52,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-21 05:07:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2022-07-21 05:07:52,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 58 states have internal predecessors, (67), 14 states have call successors, (14), 8 states have call predecessors, (14), 12 states have return successors, (35), 17 states have call predecessors, (35), 14 states have call successors, (35) [2022-07-21 05:07:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2022-07-21 05:07:52,056 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 79 [2022-07-21 05:07:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:52,056 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2022-07-21 05:07:52,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 23 states have internal predecessors, (73), 17 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (24), 11 states have call predecessors, (24), 17 states have call successors, (24) [2022-07-21 05:07:52,057 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2022-07-21 05:07:52,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:07:52,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:52,059 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:52,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 05:07:52,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:52,275 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:52,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash -31484793, now seen corresponding path program 1 times [2022-07-21 05:07:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:52,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225203361] [2022-07-21 05:07:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:52,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:07:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:07:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:07:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 66 proven. 113 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-07-21 05:07:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225203361] [2022-07-21 05:07:52,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225203361] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:52,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827159599] [2022-07-21 05:07:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:52,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:52,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:52,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:52,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 05:07:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:52,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:07:52,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 53 proven. 104 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-07-21 05:07:52,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 53 proven. 109 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-21 05:07:53,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827159599] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:07:53,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:07:53,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 21 [2022-07-21 05:07:53,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752292148] [2022-07-21 05:07:53,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:53,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 05:07:53,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:53,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 05:07:53,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-07-21 05:07:53,300 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) [2022-07-21 05:07:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:53,649 INFO L93 Difference]: Finished difference Result 169 states and 248 transitions. [2022-07-21 05:07:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 05:07:53,650 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) Word has length 134 [2022-07-21 05:07:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:53,651 INFO L225 Difference]: With dead ends: 169 [2022-07-21 05:07:53,651 INFO L226 Difference]: Without dead ends: 93 [2022-07-21 05:07:53,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2022-07-21 05:07:53,652 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 79 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:53,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 220 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:07:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-21 05:07:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2022-07-21 05:07:53,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 14 states have call successors, (14), 8 states have call predecessors, (14), 13 states have return successors, (35), 18 states have call predecessors, (35), 14 states have call successors, (35) [2022-07-21 05:07:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 118 transitions. [2022-07-21 05:07:53,668 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 118 transitions. Word has length 134 [2022-07-21 05:07:53,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:53,668 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 118 transitions. [2022-07-21 05:07:53,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) [2022-07-21 05:07:53,669 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 118 transitions. [2022-07-21 05:07:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 05:07:53,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:53,670 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 9, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:53,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 05:07:53,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:53,871 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:53,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2036151949, now seen corresponding path program 2 times [2022-07-21 05:07:53,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:53,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649274094] [2022-07-21 05:07:53,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:53,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:07:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:07:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 05:07:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 05:07:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 212 proven. 113 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-07-21 05:07:54,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:54,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649274094] [2022-07-21 05:07:54,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649274094] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:54,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923930414] [2022-07-21 05:07:54,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 05:07:54,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:54,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:54,264 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:54,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 05:07:54,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 05:07:54,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:07:54,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:07:54,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 146 proven. 53 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-07-21 05:07:54,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 148 proven. 56 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2022-07-21 05:07:54,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923930414] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:07:54,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:07:54,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 11] total 27 [2022-07-21 05:07:54,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206195357] [2022-07-21 05:07:54,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:55,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 05:07:55,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:55,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 05:07:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-07-21 05:07:55,002 INFO L87 Difference]: Start difference. First operand 87 states and 118 transitions. Second operand has 27 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 27 states have internal predecessors, (81), 17 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (30), 18 states have call predecessors, (30), 17 states have call successors, (30) [2022-07-21 05:07:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:55,447 INFO L93 Difference]: Finished difference Result 186 states and 278 transitions. [2022-07-21 05:07:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 05:07:55,448 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 27 states have internal predecessors, (81), 17 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (30), 18 states have call predecessors, (30), 17 states have call successors, (30) Word has length 161 [2022-07-21 05:07:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:55,449 INFO L225 Difference]: With dead ends: 186 [2022-07-21 05:07:55,449 INFO L226 Difference]: Without dead ends: 109 [2022-07-21 05:07:55,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 358 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2022-07-21 05:07:55,451 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 102 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:55,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 254 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:07:55,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-21 05:07:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2022-07-21 05:07:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 62 states have internal predecessors, (72), 14 states have call successors, (14), 9 states have call predecessors, (14), 13 states have return successors, (29), 18 states have call predecessors, (29), 14 states have call successors, (29) [2022-07-21 05:07:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2022-07-21 05:07:55,468 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 161 [2022-07-21 05:07:55,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:55,469 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2022-07-21 05:07:55,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 27 states have internal predecessors, (81), 17 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (30), 18 states have call predecessors, (30), 17 states have call successors, (30) [2022-07-21 05:07:55,470 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2022-07-21 05:07:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-21 05:07:55,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:55,472 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 15, 14, 14, 12, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:55,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 05:07:55,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 05:07:55,688 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:55,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash -712391191, now seen corresponding path program 3 times [2022-07-21 05:07:55,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:55,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458343046] [2022-07-21 05:07:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:55,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:07:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 05:07:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 05:07:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:55,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:07:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 05:07:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 194 proven. 345 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-07-21 05:07:56,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:56,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458343046] [2022-07-21 05:07:56,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458343046] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:56,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229845169] [2022-07-21 05:07:56,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 05:07:56,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:56,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:56,106 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:56,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 05:07:56,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-21 05:07:56,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:07:56,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 05:07:56,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 550 proven. 4 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2022-07-21 05:07:56,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 226 proven. 42 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2022-07-21 05:07:56,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229845169] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:07:56,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:07:56,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7, 7] total 28 [2022-07-21 05:07:56,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729517283] [2022-07-21 05:07:56,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:56,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 05:07:56,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:56,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 05:07:56,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2022-07-21 05:07:56,778 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand has 28 states, 27 states have (on average 3.074074074074074) internal successors, (83), 28 states have internal predecessors, (83), 13 states have call successors, (23), 2 states have call predecessors, (23), 12 states have return successors, (31), 18 states have call predecessors, (31), 13 states have call successors, (31) [2022-07-21 05:07:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:57,386 INFO L93 Difference]: Finished difference Result 226 states and 338 transitions. [2022-07-21 05:07:57,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-21 05:07:57,386 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.074074074074074) internal successors, (83), 28 states have internal predecessors, (83), 13 states have call successors, (23), 2 states have call predecessors, (23), 12 states have return successors, (31), 18 states have call predecessors, (31), 13 states have call successors, (31) Word has length 217 [2022-07-21 05:07:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:57,388 INFO L225 Difference]: With dead ends: 226 [2022-07-21 05:07:57,388 INFO L226 Difference]: Without dead ends: 138 [2022-07-21 05:07:57,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 486 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1924, Unknown=0, NotChecked=0, Total=2256 [2022-07-21 05:07:57,390 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 171 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:57,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 237 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 05:07:57,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-07-21 05:07:57,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 120. [2022-07-21 05:07:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 81 states have internal predecessors, (97), 20 states have call successors, (20), 16 states have call predecessors, (20), 14 states have return successors, (39), 22 states have call predecessors, (39), 20 states have call successors, (39) [2022-07-21 05:07:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 156 transitions. [2022-07-21 05:07:57,401 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 156 transitions. Word has length 217 [2022-07-21 05:07:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:57,402 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 156 transitions. [2022-07-21 05:07:57,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.074074074074074) internal successors, (83), 28 states have internal predecessors, (83), 13 states have call successors, (23), 2 states have call predecessors, (23), 12 states have return successors, (31), 18 states have call predecessors, (31), 13 states have call successors, (31) [2022-07-21 05:07:57,402 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 156 transitions. [2022-07-21 05:07:57,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-07-21 05:07:57,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:57,409 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 29, 29, 26, 25, 17, 17, 17, 17, 17, 17, 17, 14, 14, 14, 14, 14, 14, 14, 12, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:57,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 05:07:57,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:57,615 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:57,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:57,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1461102743, now seen corresponding path program 4 times [2022-07-21 05:07:57,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:57,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266875188] [2022-07-21 05:07:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:57,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:07:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:57,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:57,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:07:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:07:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 05:07:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:07:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:07:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-21 05:07:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:07:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:07:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 05:07:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:07:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:07:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:07:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:07:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 181 proven. 647 refuted. 0 times theorem prover too weak. 4573 trivial. 0 not checked. [2022-07-21 05:07:58,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:58,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266875188] [2022-07-21 05:07:58,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266875188] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:58,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566075046] [2022-07-21 05:07:58,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 05:07:58,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:58,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:58,288 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:58,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 05:07:58,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 05:07:58,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:07:58,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:07:58,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 166 proven. 905 refuted. 0 times theorem prover too weak. 4330 trivial. 0 not checked. [2022-07-21 05:07:58,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:08:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 166 proven. 926 refuted. 0 times theorem prover too weak. 4309 trivial. 0 not checked. [2022-07-21 05:08:00,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566075046] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:08:00,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:08:00,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 27 [2022-07-21 05:08:00,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333434129] [2022-07-21 05:08:00,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:08:00,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 05:08:00,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:08:00,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 05:08:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2022-07-21 05:08:00,409 INFO L87 Difference]: Start difference. First operand 120 states and 156 transitions. Second operand has 27 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 27 states have internal predecessors, (83), 22 states have call successors, (27), 1 states have call predecessors, (27), 9 states have return successors, (33), 14 states have call predecessors, (33), 22 states have call successors, (33) [2022-07-21 05:08:00,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:08:00,785 INFO L93 Difference]: Finished difference Result 206 states and 283 transitions. [2022-07-21 05:08:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 05:08:00,786 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 27 states have internal predecessors, (83), 22 states have call successors, (27), 1 states have call predecessors, (27), 9 states have return successors, (33), 14 states have call predecessors, (33), 22 states have call successors, (33) Word has length 433 [2022-07-21 05:08:00,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:08:00,788 INFO L225 Difference]: With dead ends: 206 [2022-07-21 05:08:00,788 INFO L226 Difference]: Without dead ends: 106 [2022-07-21 05:08:00,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 976 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2022-07-21 05:08:00,789 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 60 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:08:00,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 313 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:08:00,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-21 05:08:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-07-21 05:08:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.144736842105263) internal successors, (87), 73 states have internal predecessors, (87), 17 states have call successors, (17), 15 states have call predecessors, (17), 12 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2022-07-21 05:08:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2022-07-21 05:08:00,795 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 433 [2022-07-21 05:08:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:08:00,795 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2022-07-21 05:08:00,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 27 states have internal predecessors, (83), 22 states have call successors, (27), 1 states have call predecessors, (27), 9 states have return successors, (33), 14 states have call predecessors, (33), 22 states have call successors, (33) [2022-07-21 05:08:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2022-07-21 05:08:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-21 05:08:00,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:08:00,797 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:08:00,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 05:08:00,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 05:08:00,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:08:00,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:08:00,999 INFO L85 PathProgramCache]: Analyzing trace with hash 521886258, now seen corresponding path program 5 times [2022-07-21 05:08:00,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:08:00,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065564931] [2022-07-21 05:08:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:08:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:08:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:08:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:08:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:08:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:08:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:08:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:08:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:08:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:08:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 05:08:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:08:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:08:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:08:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:08:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-07-21 05:08:01,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:08:01,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065564931] [2022-07-21 05:08:01,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065564931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:08:01,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149213472] [2022-07-21 05:08:01,838 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 05:08:01,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:08:01,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:08:01,839 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:08:01,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 05:08:01,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-07-21 05:08:01,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:08:01,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 103 conjunts are in the unsatisfiable core [2022-07-21 05:08:01,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:08:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-07-21 05:08:02,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:08:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-07-21 05:08:03,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149213472] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:08:03,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:08:03,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2022-07-21 05:08:03,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468401478] [2022-07-21 05:08:03,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:08:03,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-21 05:08:03,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:08:03,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-21 05:08:03,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 05:08:03,763 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) [2022-07-21 05:08:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:08:04,061 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2022-07-21 05:08:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 05:08:04,062 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) Word has length 174 [2022-07-21 05:08:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:08:04,063 INFO L225 Difference]: With dead ends: 123 [2022-07-21 05:08:04,063 INFO L226 Difference]: Without dead ends: 106 [2022-07-21 05:08:04,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 399 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 05:08:04,065 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:08:04,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1225 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:08:04,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-21 05:08:04,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-07-21 05:08:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.144736842105263) internal successors, (87), 73 states have internal predecessors, (87), 17 states have call successors, (17), 15 states have call predecessors, (17), 12 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2022-07-21 05:08:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2022-07-21 05:08:04,072 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 174 [2022-07-21 05:08:04,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:08:04,073 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2022-07-21 05:08:04,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) [2022-07-21 05:08:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2022-07-21 05:08:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-21 05:08:04,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:08:04,074 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:08:04,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-21 05:08:04,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 05:08:04,275 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:08:04,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:08:04,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1309374191, now seen corresponding path program 6 times [2022-07-21 05:08:04,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:08:04,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257052813] [2022-07-21 05:08:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:08:04,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:08:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:08:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:08:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:08:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:08:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:08:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:08:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 05:08:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:08:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:08:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:08:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:08:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:08:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:08:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:08:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 05:08:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:08:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 103 proven. 277 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-07-21 05:08:04,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:08:04,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257052813] [2022-07-21 05:08:04,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257052813] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:08:04,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842021943] [2022-07-21 05:08:04,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-21 05:08:04,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:08:04,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:08:04,580 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:08:04,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 05:08:04,687 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-07-21 05:08:04,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:08:04,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 05:08:04,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:08:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 524 proven. 55 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-07-21 05:08:04,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:08:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 103 proven. 271 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-21 05:08:05,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842021943] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:08:05,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:08:05,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 13] total 26 [2022-07-21 05:08:05,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127813119] [2022-07-21 05:08:05,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:08:05,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 05:08:05,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:08:05,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 05:08:05,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-07-21 05:08:05,649 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand has 26 states, 25 states have (on average 3.72) internal successors, (93), 26 states have internal predecessors, (93), 18 states have call successors, (30), 2 states have call predecessors, (30), 8 states have return successors, (34), 13 states have call predecessors, (34), 18 states have call successors, (34) [2022-07-21 05:08:05,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:08:05,865 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2022-07-21 05:08:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 05:08:05,865 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.72) internal successors, (93), 26 states have internal predecessors, (93), 18 states have call successors, (30), 2 states have call predecessors, (30), 8 states have return successors, (34), 13 states have call predecessors, (34), 18 states have call successors, (34) Word has length 188 [2022-07-21 05:08:05,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:08:05,866 INFO L225 Difference]: With dead ends: 122 [2022-07-21 05:08:05,866 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 05:08:05,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 419 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2022-07-21 05:08:05,867 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:08:05,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 129 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:08:05,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 05:08:05,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 05:08:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:08:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 05:08:05,868 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 188 [2022-07-21 05:08:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:08:05,868 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 05:08:05,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.72) internal successors, (93), 26 states have internal predecessors, (93), 18 states have call successors, (30), 2 states have call predecessors, (30), 8 states have return successors, (34), 13 states have call predecessors, (34), 18 states have call successors, (34) [2022-07-21 05:08:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 05:08:05,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 05:08:05,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 05:08:05,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 05:08:06,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 05:08:06,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 05:08:07,208 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 05:08:07,208 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 05:08:07,208 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 05:08:07,208 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 05:08:07,208 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) no Hoare annotation was computed. [2022-07-21 05:08:07,208 INFO L895 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (<= 6 |ULTIMATE.start_main_~x~0#1|) [2022-07-21 05:08:07,208 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-07-21 05:08:07,209 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2022-07-21 05:08:07,209 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= 6 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 6)) [2022-07-21 05:08:07,209 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-07-21 05:08:07,209 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-07-21 05:08:07,209 INFO L902 garLoopResultBuilder]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2022-07-21 05:08:07,209 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (not (<= |fibo2_#in~n| 1)) (= fibo2_~n |fibo2_#in~n|)) [2022-07-21 05:08:07,209 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-07-21 05:08:07,209 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse0 (<= fibo2_~n 3))) (and (or (and (<= |fibo2_#in~n| 4) (<= 4 fibo2_~n)) (and (<= |fibo2_#in~n| 2) (< 1 fibo2_~n)) (<= 6 fibo2_~n) (and (<= 3 |fibo2_#t~ret6|) (<= |fibo2_#t~ret6| 3)) (and (<= 3 fibo2_~n) .cse0)) (or (and (<= |fibo2_#t~ret6| 1) (<= 1 |fibo2_#t~ret6|)) (not (<= |fibo2_#in~n| 3))) (or (and (<= |fibo2_#t~ret6| 2) (<= 2 |fibo2_#t~ret6|)) .cse0 (<= 5 fibo2_~n)) (= fibo2_~n |fibo2_#in~n|))) [2022-07-21 05:08:07,209 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2022-07-21 05:08:07,209 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-07-21 05:08:07,209 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2022-07-21 05:08:07,209 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2022-07-21 05:08:07,210 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2022-07-21 05:08:07,210 INFO L902 garLoopResultBuilder]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2022-07-21 05:08:07,210 INFO L895 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (not (<= |fibo1_#in~n| 1))) [2022-07-21 05:08:07,210 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-07-21 05:08:07,210 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (and (or (<= |fibo1_#in~n| 3) (<= 5 fibo1_~n) (and (<= 2 |fibo1_#t~ret4|) (<= |fibo1_#t~ret4| 2))) (or (<= |fibo1_#in~n| 5) (<= 7 fibo1_~n) (and (<= |fibo1_#t~ret4| 5) (<= 5 |fibo1_#t~ret4|))) (< 1 fibo1_~n) (or (<= 4 fibo1_~n) (and (<= 1 |fibo1_#t~ret4|) (<= |fibo1_#t~ret4| 1))) (= fibo1_~n |fibo1_#in~n|)) [2022-07-21 05:08:07,210 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2022-07-21 05:08:07,210 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-07-21 05:08:07,210 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2022-07-21 05:08:07,210 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2022-07-21 05:08:07,210 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2022-07-21 05:08:07,212 INFO L356 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:08:07,214 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 05:08:07,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:08:07 BoogieIcfgContainer [2022-07-21 05:08:07,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 05:08:07,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 05:08:07,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 05:08:07,229 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 05:08:07,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:07:44" (3/4) ... [2022-07-21 05:08:07,231 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 05:08:07,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2022-07-21 05:08:07,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2022-07-21 05:08:07,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-07-21 05:08:07,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 05:08:07,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 05:08:07,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 05:08:07,265 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 05:08:07,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 05:08:07,266 INFO L158 Benchmark]: Toolchain (without parser) took 23227.62ms. Allocated memory was 65.0MB in the beginning and 207.6MB in the end (delta: 142.6MB). Free memory was 45.9MB in the beginning and 183.4MB in the end (delta: -137.5MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2022-07-21 05:08:07,266 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 65.0MB. Free memory was 47.5MB in the beginning and 47.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:08:07,266 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.36ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 36.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 05:08:07,267 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.84ms. Allocated memory is still 65.0MB. Free memory was 36.1MB in the beginning and 49.3MB in the end (delta: -13.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 05:08:07,267 INFO L158 Benchmark]: Boogie Preprocessor took 29.25ms. Allocated memory is still 65.0MB. Free memory was 49.3MB in the beginning and 48.5MB in the end (delta: 868.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:08:07,267 INFO L158 Benchmark]: RCFGBuilder took 281.27ms. Allocated memory is still 65.0MB. Free memory was 48.5MB in the beginning and 39.6MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 05:08:07,267 INFO L158 Benchmark]: TraceAbstraction took 22657.07ms. Allocated memory was 65.0MB in the beginning and 207.6MB in the end (delta: 142.6MB). Free memory was 38.9MB in the beginning and 185.5MB in the end (delta: -146.6MB). Peak memory consumption was 119.8MB. Max. memory is 16.1GB. [2022-07-21 05:08:07,268 INFO L158 Benchmark]: Witness Printer took 37.00ms. Allocated memory is still 207.6MB. Free memory was 185.5MB in the beginning and 183.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 05:08:07,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 65.0MB. Free memory was 47.5MB in the beginning and 47.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.36ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 36.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.84ms. Allocated memory is still 65.0MB. Free memory was 36.1MB in the beginning and 49.3MB in the end (delta: -13.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.25ms. Allocated memory is still 65.0MB. Free memory was 49.3MB in the beginning and 48.5MB in the end (delta: 868.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 281.27ms. Allocated memory is still 65.0MB. Free memory was 48.5MB in the beginning and 39.6MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22657.07ms. Allocated memory was 65.0MB in the beginning and 207.6MB in the end (delta: 142.6MB). Free memory was 38.9MB in the beginning and 185.5MB in the end (delta: -146.6MB). Peak memory consumption was 119.8MB. Max. memory is 16.1GB. * Witness Printer took 37.00ms. Allocated memory is still 207.6MB. Free memory was 185.5MB in the beginning and 183.4MB 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: 41]: 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 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.6s, OverallIterations: 14, TraceHistogramMax: 34, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 965 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 885 mSDsluCounter, 3391 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2983 mSDsCounter, 907 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5295 IncrementalHoareTripleChecker+Invalid, 6202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 907 mSolverCounterUnsat, 408 mSDtfsCounter, 5295 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3848 GetRequests, 3471 SyntacticMatches, 35 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2120 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=11, InterpolantAutomatonStates: 254, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 132 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 452 PreInvPairs, 640 NumberOfFragments, 136 HoareAnnotationTreeSize, 452 FomulaSimplifications, 4245 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 6279 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 3135 NumberOfCodeBlocks, 2897 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 4654 ConstructedInterpolants, 0 QuantifiedInterpolants, 8909 SizeOfPredicates, 42 NumberOfNonLiveVariables, 3132 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 24054/29178 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: 37]: Loop Invariant Derived loop invariant: 6 <= x RESULT: Ultimate proved your program to be correct! [2022-07-21 05:08:07,304 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