./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_o1000.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/id_o1000.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 1ac5ce2c5b306e431b6746a0cb1bbdfcd1ec9c3d54097bd6037af4480ff2bd07 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 19:49:58,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 19:49:58,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 19:49:58,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 19:49:58,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 19:49:58,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 19:49:58,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 19:49:58,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 19:49:58,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 19:49:58,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 19:49:58,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 19:49:58,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 19:49:58,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 19:49:58,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 19:49:58,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 19:49:58,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 19:49:58,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 19:49:58,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 19:49:58,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 19:49:58,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 19:49:58,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 19:49:58,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 19:49:58,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 19:49:58,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 19:49:58,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 19:49:58,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 19:49:58,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 19:49:58,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 19:49:58,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 19:49:58,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 19:49:58,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 19:49:58,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 19:49:58,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 19:49:58,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 19:49:58,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 19:49:58,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 19:49:58,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 19:49:58,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 19:49:58,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 19:49:58,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 19:49:58,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 19:49:58,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 19:49:58,105 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 19:49:58,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 19:49:58,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 19:49:58,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 19:49:58,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 19:49:58,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 19:49:58,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 19:49:58,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 19:49:58,107 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 19:49:58,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 19:49:58,107 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 19:49:58,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 19:49:58,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 19:49:58,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 19:49:58,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 19:49:58,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 19:49:58,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 19:49:58,108 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 19:49:58,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 19:49:58,108 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 19:49:58,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 19:49:58,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 19:49:58,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 19:49:58,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 19:49:58,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 19:49:58,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 19:49:58,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 19:49:58,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 19:49:58,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 19:49:58,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 19:49:58,109 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 19:49:58,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 19:49:58,109 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 19:49:58,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 19:49:58,109 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 19:49:58,109 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ac5ce2c5b306e431b6746a0cb1bbdfcd1ec9c3d54097bd6037af4480ff2bd07 [2023-02-18 19:49:58,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 19:49:58,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 19:49:58,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 19:49:58,292 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 19:49:58,292 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 19:49:58,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_o1000.c [2023-02-18 19:49:59,420 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 19:49:59,604 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 19:49:59,604 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_o1000.c [2023-02-18 19:49:59,608 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c1803f85/f525aec10fc749d18e186bc9d74470b1/FLAG4ee742d80 [2023-02-18 19:49:59,621 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c1803f85/f525aec10fc749d18e186bc9d74470b1 [2023-02-18 19:49:59,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 19:49:59,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 19:49:59,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 19:49:59,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 19:49:59,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 19:49:59,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4b77b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59, skipping insertion in model container [2023-02-18 19:49:59,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 19:49:59,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 19:49:59,775 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_o1000.c[520,533] [2023-02-18 19:49:59,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 19:49:59,798 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 19:49:59,811 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_o1000.c[520,533] [2023-02-18 19:49:59,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 19:49:59,831 INFO L208 MainTranslator]: Completed translation [2023-02-18 19:49:59,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59 WrapperNode [2023-02-18 19:49:59,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 19:49:59,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 19:49:59,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 19:49:59,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 19:49:59,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,877 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-02-18 19:49:59,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 19:49:59,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 19:49:59,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 19:49:59,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 19:49:59,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,901 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 19:49:59,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 19:49:59,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 19:49:59,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 19:49:59,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (1/1) ... [2023-02-18 19:49:59,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 19:49:59,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:49:59,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 19:49:59,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 19:49:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 19:49:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 19:49:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 19:49:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 19:49:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-02-18 19:49:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-02-18 19:50:00,034 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 19:50:00,035 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 19:50:00,161 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 19:50:00,165 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 19:50:00,165 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 19:50:00,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:50:00 BoogieIcfgContainer [2023-02-18 19:50:00,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 19:50:00,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 19:50:00,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 19:50:00,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 19:50:00,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:49:59" (1/3) ... [2023-02-18 19:50:00,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7108bca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:50:00, skipping insertion in model container [2023-02-18 19:50:00,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:49:59" (2/3) ... [2023-02-18 19:50:00,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7108bca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:50:00, skipping insertion in model container [2023-02-18 19:50:00,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:50:00" (3/3) ... [2023-02-18 19:50:00,190 INFO L112 eAbstractionObserver]: Analyzing ICFG id_o1000.c [2023-02-18 19:50:00,202 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 19:50:00,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 19:50:00,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 19:50:00,235 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b41a406, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 19:50:00,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 19:50:00,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:50:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 19:50:00,243 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:50:00,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:50:00,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:50:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:50:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2023-02-18 19:50:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:50:00,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962151981] [2023-02-18 19:50:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:50:00,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:50:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:50:00,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:50:00,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962151981] [2023-02-18 19:50:00,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962151981] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:50:00,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:50:00,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 19:50:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133106569] [2023-02-18 19:50:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:50:00,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 19:50:00,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:50:00,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 19:50:00,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 19:50:00,515 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 19:50:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:50:00,579 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-02-18 19:50:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 19:50:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-02-18 19:50:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:50:00,595 INFO L225 Difference]: With dead ends: 28 [2023-02-18 19:50:00,595 INFO L226 Difference]: Without dead ends: 15 [2023-02-18 19:50:00,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 19:50:00,599 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:50:00,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 19:50:00,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-18 19:50:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-02-18 19:50:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 19:50:00,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-02-18 19:50:00,624 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2023-02-18 19:50:00,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:50:00,624 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-02-18 19:50:00,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 19:50:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-02-18 19:50:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 19:50:00,629 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:50:00,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:50:00,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 19:50:00,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:50:00,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:50:00,645 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2023-02-18 19:50:00,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:50:00,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460628166] [2023-02-18 19:50:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:50:00,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:50:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:00,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 19:50:00,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:50:00,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460628166] [2023-02-18 19:50:00,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460628166] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:50:00,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006869540] [2023-02-18 19:50:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:50:00,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:50:00,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:50:00,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:50:00,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 19:50:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:00,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 19:50:00,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:50:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 19:50:00,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:50:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 19:50:00,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006869540] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:50:00,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:50:00,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-18 19:50:00,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698087030] [2023-02-18 19:50:00,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:50:00,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 19:50:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:50:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 19:50:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-18 19:50:00,911 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 19:50:00,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:50:00,943 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2023-02-18 19:50:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 19:50:00,944 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 16 [2023-02-18 19:50:00,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:50:00,944 INFO L225 Difference]: With dead ends: 27 [2023-02-18 19:50:00,945 INFO L226 Difference]: Without dead ends: 21 [2023-02-18 19:50:00,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-18 19:50:00,946 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:50:00,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 19:50:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-18 19:50:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-18 19:50:00,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-18 19:50:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-02-18 19:50:00,950 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2023-02-18 19:50:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:50:00,951 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-02-18 19:50:00,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 19:50:00,951 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-02-18 19:50:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 19:50:00,952 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:50:00,952 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:50:00,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 19:50:01,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:50:01,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:50:01,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:50:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 2 times [2023-02-18 19:50:01,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:50:01,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865547239] [2023-02-18 19:50:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:50:01,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:50:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:01,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:01,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 19:50:01,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:50:01,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865547239] [2023-02-18 19:50:01,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865547239] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:50:01,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114920097] [2023-02-18 19:50:01,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:50:01,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:50:01,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:50:01,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:50:01,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 19:50:01,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:50:01,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:50:01,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 19:50:01,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:50:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 19:50:01,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:50:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 19:50:01,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114920097] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:50:01,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:50:01,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-02-18 19:50:01,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795589957] [2023-02-18 19:50:01,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:50:01,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 19:50:01,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:50:01,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 19:50:01,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2023-02-18 19:50:01,701 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-18 19:50:01,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:50:01,874 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-02-18 19:50:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 19:50:01,875 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 28 [2023-02-18 19:50:01,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:50:01,875 INFO L225 Difference]: With dead ends: 39 [2023-02-18 19:50:01,876 INFO L226 Difference]: Without dead ends: 33 [2023-02-18 19:50:01,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2023-02-18 19:50:01,878 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:50:01,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:50:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-18 19:50:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-18 19:50:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-18 19:50:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2023-02-18 19:50:01,885 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2023-02-18 19:50:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:50:01,885 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2023-02-18 19:50:01,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-18 19:50:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-02-18 19:50:01,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-18 19:50:01,887 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:50:01,887 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:50:01,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 19:50:02,089 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,SelfDestructingSolverStorable2 [2023-02-18 19:50:02,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:50:02,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:50:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 3 times [2023-02-18 19:50:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:50:02,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965123087] [2023-02-18 19:50:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:50:02,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:50:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:02,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:02,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:02,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-18 19:50:02,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:50:02,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965123087] [2023-02-18 19:50:02,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965123087] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:50:02,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154176975] [2023-02-18 19:50:02,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:50:02,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:50:02,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:50:02,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:50:02,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 19:50:02,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-18 19:50:02,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:50:02,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-18 19:50:02,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:50:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-18 19:50:02,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:50:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-18 19:50:03,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154176975] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:50:03,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:50:03,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2023-02-18 19:50:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808565796] [2023-02-18 19:50:03,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:50:03,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-18 19:50:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:50:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-18 19:50:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2023-02-18 19:50:03,377 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-18 19:50:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:50:04,369 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2023-02-18 19:50:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-18 19:50:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 52 [2023-02-18 19:50:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:50:04,371 INFO L225 Difference]: With dead ends: 63 [2023-02-18 19:50:04,371 INFO L226 Difference]: Without dead ends: 57 [2023-02-18 19:50:04,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 94 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=386, Invalid=1966, Unknown=0, NotChecked=0, Total=2352 [2023-02-18 19:50:04,373 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 19:50:04,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 353 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 19:50:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-18 19:50:04,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-02-18 19:50:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2023-02-18 19:50:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2023-02-18 19:50:04,379 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 52 [2023-02-18 19:50:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:50:04,380 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2023-02-18 19:50:04,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-18 19:50:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2023-02-18 19:50:04,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-02-18 19:50:04,388 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:50:04,388 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:50:04,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 19:50:04,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:50:04,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:50:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:50:04,594 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 4 times [2023-02-18 19:50:04,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:50:04,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514304500] [2023-02-18 19:50:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:50:04,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:50:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:04,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:05,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:50:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:50:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-02-18 19:50:06,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:50:06,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514304500] [2023-02-18 19:50:06,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514304500] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:50:06,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785044481] [2023-02-18 19:50:06,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:50:06,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:50:06,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:50:06,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:50:06,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 19:50:06,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:50:06,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:50:06,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-18 19:50:06,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:50:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-02-18 19:50:06,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:50:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-02-18 19:50:08,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785044481] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:50:08,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:50:08,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2023-02-18 19:50:08,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627709913] [2023-02-18 19:50:08,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:50:08,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-02-18 19:50:08,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:50:08,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-02-18 19:50:08,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=4072, Unknown=0, NotChecked=0, Total=4692 [2023-02-18 19:50:08,176 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2023-02-18 19:50:29,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 19:51:07,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:51:07,490 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2023-02-18 19:51:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-02-18 19:51:07,490 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) Word has length 100 [2023-02-18 19:51:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:51:07,492 INFO L225 Difference]: With dead ends: 111 [2023-02-18 19:51:07,492 INFO L226 Difference]: Without dead ends: 105 [2023-02-18 19:51:07,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 182 SyntacticMatches, 16 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 59.5s TimeCoverageRelationStatistics Valid=1530, Invalid=7780, Unknown=2, NotChecked=0, Total=9312 [2023-02-18 19:51:07,495 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:51:07,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 985 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-18 19:51:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-18 19:51:07,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-02-18 19:51:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 71 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (33), 32 states have call predecessors, (33), 2 states have call successors, (33) [2023-02-18 19:51:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2023-02-18 19:51:07,526 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2023-02-18 19:51:07,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:51:07,528 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2023-02-18 19:51:07,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2023-02-18 19:51:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2023-02-18 19:51:07,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-02-18 19:51:07,534 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:51:07,535 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:51:07,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 19:51:07,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:51:07,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:51:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:51:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1665704854, now seen corresponding path program 5 times [2023-02-18 19:51:07,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:51:07,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936844853] [2023-02-18 19:51:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:51:07,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:51:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:08,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:09,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:10,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:12,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:12,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:13,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:13,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:13,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:13,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:14,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 19:51:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:51:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2023-02-18 19:51:14,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:51:14,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936844853] [2023-02-18 19:51:14,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936844853] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:51:14,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227972281] [2023-02-18 19:51:14,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:51:14,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:51:14,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:51:14,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:51:14,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 19:51:23,642 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-02-18 19:51:23,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:51:23,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 132 conjunts are in the unsatisfiable core [2023-02-18 19:51:23,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:51:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2023-02-18 19:51:24,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:51:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2023-02-18 19:51:29,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227972281] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:51:29,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 19:51:29,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 133 [2023-02-18 19:51:29,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234312519] [2023-02-18 19:51:29,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 19:51:29,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2023-02-18 19:51:29,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:51:29,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2023-02-18 19:51:29,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2252, Invalid=15304, Unknown=0, NotChecked=0, Total=17556 [2023-02-18 19:51:29,545 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 133 states, 133 states have (on average 1.0451127819548873) internal successors, (139), 69 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 64 states have return successors, (64), 64 states have call predecessors, (64), 1 states have call successors, (64) [2023-02-18 19:53:14,540 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 1000 (mod (+ |c_id_#res| 9) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 19) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 10) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 7) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 26) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 13) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 11) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 14) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 12) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 5) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 20) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 3) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 23) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 17) 4294967296))) (not (= 1000 (mod |c_id_#res| 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 16) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 30) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 29) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 4) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 2) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 1) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 21) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 6) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 22) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 18) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 15) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 28) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 8) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 27) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 24) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 25) 4294967296)))) is different from false [2023-02-18 19:55:03,559 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 1000 (mod (+ |c_id_#res| 9) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 19) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 10) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 7) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 26) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 13) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 11) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 14) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 12) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 5) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 20) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 3) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 23) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 17) 4294967296))) (not (= 1000 (mod |c_id_#res| 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 16) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 29) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 4) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 2) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 1) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 21) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 6) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 22) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 18) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 15) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 28) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 8) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 27) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 24) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 25) 4294967296)))) is different from false [2023-02-18 19:56:35,244 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 1000 (mod (+ |c_id_#res| 9) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 19) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 10) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 7) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 26) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 13) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 11) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 14) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 12) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 5) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 20) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 3) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 23) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 17) 4294967296))) (not (= 1000 (mod |c_id_#res| 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 16) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 4) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 2) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 1) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 21) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 6) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 22) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 18) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 15) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 28) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 8) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 27) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 24) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 25) 4294967296)))) is different from false [2023-02-18 19:58:02,685 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 1000 (mod (+ |c_id_#res| 9) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 19) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 10) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 7) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 26) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 13) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 11) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 14) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 12) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 5) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 20) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 3) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 23) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 17) 4294967296))) (not (= 1000 (mod |c_id_#res| 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 16) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 4) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 2) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 1) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 21) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 6) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 22) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 18) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 15) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 8) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 27) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 24) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 25) 4294967296)))) is different from false [2023-02-18 20:00:50,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 20:00:52,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 20:02:00,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 20:03:19,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 20:03:21,308 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 1000 (mod (+ |c_id_#t~ret4| 13) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 10) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 16) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 5) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 2) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 12) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 1) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 18) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 19) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 24) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 23) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 9) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 4) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 15) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 11) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 7) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 21) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 25) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 3) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 22) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 8) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 14) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 6) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 20) 4294967296))) (not (= 1000 (mod (+ |c_id_#t~ret4| 17) 4294967296)))) is different from false