./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/eca-rers2012/Problem14_label46.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 454a0d8e81468f46c7e33771197733cd10e6f7a6ab6cc63470839978aa4b6ed5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 04:45:07,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 04:45:07,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 04:45:07,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 04:45:07,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 04:45:07,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 04:45:07,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 04:45:07,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 04:45:07,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 04:45:07,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 04:45:07,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 04:45:07,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 04:45:07,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 04:45:07,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 04:45:07,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 04:45:07,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 04:45:07,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 04:45:07,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 04:45:07,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 04:45:07,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 04:45:07,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 04:45:07,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 04:45:07,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 04:45:07,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 04:45:07,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 04:45:07,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 04:45:07,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 04:45:07,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 04:45:07,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 04:45:07,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 04:45:07,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 04:45:07,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 04:45:07,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 04:45:07,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 04:45:07,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 04:45:07,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 04:45:07,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 04:45:07,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 04:45:07,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 04:45:07,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 04:45:07,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 04:45:07,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 04:45:07,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 04:45:07,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 04:45:07,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 04:45:07,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 04:45:07,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 04:45:07,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 04:45:07,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 04:45:07,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 04:45:07,939 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 04:45:07,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 04:45:07,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 04:45:07,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 04:45:07,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 04:45:07,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 04:45:07,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 04:45:07,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 04:45:07,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 04:45:07,941 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 04:45:07,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 04:45:07,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 04:45:07,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 04:45:07,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 04:45:07,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 04:45:07,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 04:45:07,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:45:07,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 04:45:07,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 04:45:07,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 04:45:07,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 04:45:07,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 04:45:07,943 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 04:45:07,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 04:45:07,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 04:45:07,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 04:45:07,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 454a0d8e81468f46c7e33771197733cd10e6f7a6ab6cc63470839978aa4b6ed5 [2021-12-17 04:45:08,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 04:45:08,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 04:45:08,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 04:45:08,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 04:45:08,163 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 04:45:08,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label46.c [2021-12-17 04:45:08,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3bc431f/3482cbf5ef7c44d6ac84c682f92953c5/FLAG113149058 [2021-12-17 04:45:08,615 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 04:45:08,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label46.c [2021-12-17 04:45:08,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3bc431f/3482cbf5ef7c44d6ac84c682f92953c5/FLAG113149058 [2021-12-17 04:45:08,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3bc431f/3482cbf5ef7c44d6ac84c682f92953c5 [2021-12-17 04:45:08,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 04:45:08,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 04:45:08,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 04:45:08,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 04:45:08,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 04:45:08,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:45:08" (1/1) ... [2021-12-17 04:45:08,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52137bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:08, skipping insertion in model container [2021-12-17 04:45:08,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:45:08" (1/1) ... [2021-12-17 04:45:08,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 04:45:08,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 04:45:08,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label46.c[4146,4159] [2021-12-17 04:45:09,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:45:09,013 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 04:45:09,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label46.c[4146,4159] [2021-12-17 04:45:09,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:45:09,094 INFO L208 MainTranslator]: Completed translation [2021-12-17 04:45:09,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09 WrapperNode [2021-12-17 04:45:09,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 04:45:09,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 04:45:09,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 04:45:09,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 04:45:09,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (1/1) ... [2021-12-17 04:45:09,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (1/1) ... [2021-12-17 04:45:09,162 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2021-12-17 04:45:09,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 04:45:09,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 04:45:09,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 04:45:09,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 04:45:09,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (1/1) ... [2021-12-17 04:45:09,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (1/1) ... [2021-12-17 04:45:09,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (1/1) ... [2021-12-17 04:45:09,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (1/1) ... [2021-12-17 04:45:09,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (1/1) ... [2021-12-17 04:45:09,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (1/1) ... [2021-12-17 04:45:09,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (1/1) ... [2021-12-17 04:45:09,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 04:45:09,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 04:45:09,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 04:45:09,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 04:45:09,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (1/1) ... [2021-12-17 04:45:09,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:45:09,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:09,291 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) [2021-12-17 04:45:09,326 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 [2021-12-17 04:45:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 04:45:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 04:45:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 04:45:09,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 04:45:09,408 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 04:45:09,409 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 04:45:10,171 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 04:45:10,180 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 04:45:10,181 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 04:45:10,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:45:10 BoogieIcfgContainer [2021-12-17 04:45:10,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 04:45:10,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 04:45:10,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 04:45:10,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 04:45:10,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:45:08" (1/3) ... [2021-12-17 04:45:10,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793f55e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:45:10, skipping insertion in model container [2021-12-17 04:45:10,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:45:09" (2/3) ... [2021-12-17 04:45:10,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793f55e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:45:10, skipping insertion in model container [2021-12-17 04:45:10,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:45:10" (3/3) ... [2021-12-17 04:45:10,189 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label46.c [2021-12-17 04:45:10,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 04:45:10,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 04:45:10,227 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 04:45:10,232 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 04:45:10,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 04:45:10,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-17 04:45:10,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:10,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:10,253 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:10,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1453294289, now seen corresponding path program 1 times [2021-12-17 04:45:10,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:10,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056630625] [2021-12-17 04:45:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:10,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:45:10,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:10,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056630625] [2021-12-17 04:45:10,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056630625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:10,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:10,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:45:10,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750121621] [2021-12-17 04:45:10,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:10,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:10,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:10,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:10,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:10,543 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:11,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:11,315 INFO L93 Difference]: Finished difference Result 669 states and 1200 transitions. [2021-12-17 04:45:11,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:11,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-17 04:45:11,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:11,325 INFO L225 Difference]: With dead ends: 669 [2021-12-17 04:45:11,325 INFO L226 Difference]: Without dead ends: 360 [2021-12-17 04:45:11,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:11,330 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 171 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:11,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 94 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 04:45:11,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-17 04:45:11,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-12-17 04:45:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.5208913649025069) internal successors, (546), 359 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 546 transitions. [2021-12-17 04:45:11,412 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 546 transitions. Word has length 39 [2021-12-17 04:45:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:11,412 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 546 transitions. [2021-12-17 04:45:11,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 546 transitions. [2021-12-17 04:45:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-17 04:45:11,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:11,416 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:11,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 04:45:11,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:11,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:11,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1422211861, now seen corresponding path program 1 times [2021-12-17 04:45:11,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:11,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210481342] [2021-12-17 04:45:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:11,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:45:11,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:11,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210481342] [2021-12-17 04:45:11,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210481342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:11,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:11,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:45:11,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527680594] [2021-12-17 04:45:11,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:11,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:11,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:11,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:11,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:11,526 INFO L87 Difference]: Start difference. First operand 360 states and 546 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:12,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:12,129 INFO L93 Difference]: Finished difference Result 1074 states and 1633 transitions. [2021-12-17 04:45:12,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:12,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-12-17 04:45:12,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:12,135 INFO L225 Difference]: With dead ends: 1074 [2021-12-17 04:45:12,135 INFO L226 Difference]: Without dead ends: 716 [2021-12-17 04:45:12,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:12,143 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 116 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:12,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 57 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 04:45:12,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-12-17 04:45:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-12-17 04:45:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.413986013986014) internal successors, (1011), 715 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1011 transitions. [2021-12-17 04:45:12,182 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1011 transitions. Word has length 114 [2021-12-17 04:45:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:12,184 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1011 transitions. [2021-12-17 04:45:12,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1011 transitions. [2021-12-17 04:45:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-17 04:45:12,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:12,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:12,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 04:45:12,190 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:12,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1534152481, now seen corresponding path program 1 times [2021-12-17 04:45:12,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:12,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730542168] [2021-12-17 04:45:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:12,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:45:12,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:12,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730542168] [2021-12-17 04:45:12,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730542168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:12,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:12,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:45:12,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191765195] [2021-12-17 04:45:12,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:12,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:45:12,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:45:12,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:12,330 INFO L87 Difference]: Start difference. First operand 716 states and 1011 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:13,078 INFO L93 Difference]: Finished difference Result 1964 states and 2705 transitions. [2021-12-17 04:45:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:45:13,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-17 04:45:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:13,082 INFO L225 Difference]: With dead ends: 1964 [2021-12-17 04:45:13,082 INFO L226 Difference]: Without dead ends: 1250 [2021-12-17 04:45:13,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 04:45:13,084 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 431 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:13,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 122 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 04:45:13,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-12-17 04:45:13,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2021-12-17 04:45:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.2658126501200961) internal successors, (1581), 1249 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1581 transitions. [2021-12-17 04:45:13,101 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1581 transitions. Word has length 118 [2021-12-17 04:45:13,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:13,102 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1581 transitions. [2021-12-17 04:45:13,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:13,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1581 transitions. [2021-12-17 04:45:13,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-12-17 04:45:13,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:13,104 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:13,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 04:45:13,104 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:13,105 INFO L85 PathProgramCache]: Analyzing trace with hash 283494956, now seen corresponding path program 1 times [2021-12-17 04:45:13,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:13,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443144145] [2021-12-17 04:45:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:13,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:13,170 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-17 04:45:13,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:13,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443144145] [2021-12-17 04:45:13,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443144145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:13,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:13,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:45:13,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672211720] [2021-12-17 04:45:13,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:13,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:45:13,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:13,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:45:13,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:13,173 INFO L87 Difference]: Start difference. First operand 1250 states and 1581 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:13,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:13,713 INFO L93 Difference]: Finished difference Result 2527 states and 3250 transitions. [2021-12-17 04:45:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:45:13,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2021-12-17 04:45:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:13,717 INFO L225 Difference]: With dead ends: 2527 [2021-12-17 04:45:13,717 INFO L226 Difference]: Without dead ends: 1428 [2021-12-17 04:45:13,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:13,719 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 112 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:13,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 113 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 04:45:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-12-17 04:45:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1250. [2021-12-17 04:45:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.1529223378702962) internal successors, (1440), 1249 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1440 transitions. [2021-12-17 04:45:13,736 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1440 transitions. Word has length 198 [2021-12-17 04:45:13,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:13,736 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1440 transitions. [2021-12-17 04:45:13,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1440 transitions. [2021-12-17 04:45:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-12-17 04:45:13,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:13,738 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:13,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 04:45:13,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:13,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:13,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1132182504, now seen corresponding path program 1 times [2021-12-17 04:45:13,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:13,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817164199] [2021-12-17 04:45:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:13,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 155 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:45:13,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:13,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817164199] [2021-12-17 04:45:13,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817164199] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:13,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197182117] [2021-12-17 04:45:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:13,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:13,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:13,859 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) [2021-12-17 04:45:13,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 04:45:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:13,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:45:13,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-17 04:45:14,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:14,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197182117] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:14,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:14,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-17 04:45:14,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207507291] [2021-12-17 04:45:14,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:14,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:14,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:14,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:14,400 INFO L87 Difference]: Start difference. First operand 1250 states and 1440 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:14,805 INFO L93 Difference]: Finished difference Result 1786 states and 2039 transitions. [2021-12-17 04:45:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:14,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2021-12-17 04:45:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:14,811 INFO L225 Difference]: With dead ends: 1786 [2021-12-17 04:45:14,811 INFO L226 Difference]: Without dead ends: 1784 [2021-12-17 04:45:14,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:14,812 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 163 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:14,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 11 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 04:45:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2021-12-17 04:45:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1428. [2021-12-17 04:45:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.1590749824807287) internal successors, (1654), 1427 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1654 transitions. [2021-12-17 04:45:14,832 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1654 transitions. Word has length 274 [2021-12-17 04:45:14,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:14,834 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1654 transitions. [2021-12-17 04:45:14,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1654 transitions. [2021-12-17 04:45:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-12-17 04:45:14,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:14,837 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:14,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:15,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:15,055 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:15,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1778373340, now seen corresponding path program 1 times [2021-12-17 04:45:15,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:15,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467142024] [2021-12-17 04:45:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:15,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 162 proven. 130 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-17 04:45:15,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:15,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467142024] [2021-12-17 04:45:15,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467142024] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:15,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345156362] [2021-12-17 04:45:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:15,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:15,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:15,276 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) [2021-12-17 04:45:15,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 04:45:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:15,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:45:15,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-12-17 04:45:15,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:15,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345156362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:15,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:15,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-17 04:45:15,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731631977] [2021-12-17 04:45:15,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:15,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:15,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:15,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:15,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:15,796 INFO L87 Difference]: Start difference. First operand 1428 states and 1654 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:16,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:16,150 INFO L93 Difference]: Finished difference Result 3210 states and 3725 transitions. [2021-12-17 04:45:16,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:16,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2021-12-17 04:45:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:16,176 INFO L225 Difference]: With dead ends: 3210 [2021-12-17 04:45:16,176 INFO L226 Difference]: Without dead ends: 1784 [2021-12-17 04:45:16,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:16,177 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 142 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:16,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 265 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:45:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2021-12-17 04:45:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1606. [2021-12-17 04:45:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.1414330218068536) internal successors, (1832), 1605 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1832 transitions. [2021-12-17 04:45:16,195 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1832 transitions. Word has length 329 [2021-12-17 04:45:16,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:16,196 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 1832 transitions. [2021-12-17 04:45:16,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1832 transitions. [2021-12-17 04:45:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2021-12-17 04:45:16,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:16,200 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:16,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-17 04:45:16,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-17 04:45:16,435 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:16,436 INFO L85 PathProgramCache]: Analyzing trace with hash 560605277, now seen corresponding path program 1 times [2021-12-17 04:45:16,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:16,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913047197] [2021-12-17 04:45:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:16,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-12-17 04:45:16,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:16,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913047197] [2021-12-17 04:45:16,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913047197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:16,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:16,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:45:16,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30244088] [2021-12-17 04:45:16,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:16,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:16,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:16,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:16,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:16,542 INFO L87 Difference]: Start difference. First operand 1606 states and 1832 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:16,904 INFO L93 Difference]: Finished difference Result 3566 states and 4091 transitions. [2021-12-17 04:45:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:16,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 440 [2021-12-17 04:45:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:16,909 INFO L225 Difference]: With dead ends: 3566 [2021-12-17 04:45:16,909 INFO L226 Difference]: Without dead ends: 1962 [2021-12-17 04:45:16,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:16,911 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:16,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 76 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:45:16,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-12-17 04:45:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1962. [2021-12-17 04:45:16,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.135135135135135) internal successors, (2226), 1961 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2226 transitions. [2021-12-17 04:45:16,948 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2226 transitions. Word has length 440 [2021-12-17 04:45:16,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:16,948 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2226 transitions. [2021-12-17 04:45:16,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2226 transitions. [2021-12-17 04:45:16,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-12-17 04:45:16,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:16,953 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:16,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 04:45:16,954 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1453668839, now seen corresponding path program 1 times [2021-12-17 04:45:16,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:16,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95894989] [2021-12-17 04:45:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:16,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 531 proven. 23 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-17 04:45:17,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:17,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95894989] [2021-12-17 04:45:17,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95894989] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:17,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246731423] [2021-12-17 04:45:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:17,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:17,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:17,062 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) [2021-12-17 04:45:17,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 04:45:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:17,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:45:17,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2021-12-17 04:45:17,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:17,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246731423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:17,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:17,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-17 04:45:17,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199901067] [2021-12-17 04:45:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:17,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:17,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:17,788 INFO L87 Difference]: Start difference. First operand 1962 states and 2226 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:18,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:18,148 INFO L93 Difference]: Finished difference Result 4456 states and 5134 transitions. [2021-12-17 04:45:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:18,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 464 [2021-12-17 04:45:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:18,157 INFO L225 Difference]: With dead ends: 4456 [2021-12-17 04:45:18,157 INFO L226 Difference]: Without dead ends: 2674 [2021-12-17 04:45:18,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:18,160 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 142 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:18,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 244 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:45:18,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-12-17 04:45:18,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2318. [2021-12-17 04:45:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.1363832542080277) internal successors, (2633), 2317 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2633 transitions. [2021-12-17 04:45:18,214 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2633 transitions. Word has length 464 [2021-12-17 04:45:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:18,215 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2633 transitions. [2021-12-17 04:45:18,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2633 transitions. [2021-12-17 04:45:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2021-12-17 04:45:18,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:18,224 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:18,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:18,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:18,439 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:18,440 INFO L85 PathProgramCache]: Analyzing trace with hash -264398842, now seen corresponding path program 1 times [2021-12-17 04:45:18,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:18,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392196100] [2021-12-17 04:45:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:18,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 569 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-17 04:45:18,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:18,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392196100] [2021-12-17 04:45:18,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392196100] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:18,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706473688] [2021-12-17 04:45:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:18,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:18,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:18,624 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) [2021-12-17 04:45:18,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 04:45:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:18,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 04:45:18,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-17 04:45:19,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:19,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706473688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:19,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:19,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-17 04:45:19,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748170804] [2021-12-17 04:45:19,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:19,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:45:19,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:19,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:45:19,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:19,776 INFO L87 Difference]: Start difference. First operand 2318 states and 2633 transitions. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:20,404 INFO L93 Difference]: Finished difference Result 4812 states and 5466 transitions. [2021-12-17 04:45:20,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:45:20,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 483 [2021-12-17 04:45:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:20,411 INFO L225 Difference]: With dead ends: 4812 [2021-12-17 04:45:20,412 INFO L226 Difference]: Without dead ends: 2674 [2021-12-17 04:45:20,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:20,415 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 211 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:20,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 50 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 04:45:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-12-17 04:45:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2318. [2021-12-17 04:45:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.1398359948208892) internal successors, (2641), 2317 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2641 transitions. [2021-12-17 04:45:20,491 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2641 transitions. Word has length 483 [2021-12-17 04:45:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:20,492 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2641 transitions. [2021-12-17 04:45:20,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:20,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2641 transitions. [2021-12-17 04:45:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2021-12-17 04:45:20,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:20,496 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:20,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:20,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:20,714 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash -905134257, now seen corresponding path program 1 times [2021-12-17 04:45:20,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:20,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345751963] [2021-12-17 04:45:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:20,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1119 backedges. 739 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-12-17 04:45:20,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345751963] [2021-12-17 04:45:20,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345751963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:20,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:20,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:45:20,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5851799] [2021-12-17 04:45:20,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:20,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:45:20,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:45:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:20,932 INFO L87 Difference]: Start difference. First operand 2318 states and 2641 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:21,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:21,348 INFO L93 Difference]: Finished difference Result 4841 states and 5492 transitions. [2021-12-17 04:45:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:45:21,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 539 [2021-12-17 04:45:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:21,355 INFO L225 Difference]: With dead ends: 4841 [2021-12-17 04:45:21,355 INFO L226 Difference]: Without dead ends: 2496 [2021-12-17 04:45:21,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:21,358 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 124 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:21,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 17 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 04:45:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-12-17 04:45:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2318. [2021-12-17 04:45:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.0953819594302978) internal successors, (2538), 2317 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2538 transitions. [2021-12-17 04:45:21,390 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2538 transitions. Word has length 539 [2021-12-17 04:45:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:21,391 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2538 transitions. [2021-12-17 04:45:21,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2538 transitions. [2021-12-17 04:45:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2021-12-17 04:45:21,396 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:21,397 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:21,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 04:45:21,397 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:21,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:21,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1893574226, now seen corresponding path program 1 times [2021-12-17 04:45:21,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:21,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963345108] [2021-12-17 04:45:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:21,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 855 proven. 11 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-12-17 04:45:21,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:21,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963345108] [2021-12-17 04:45:21,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963345108] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:21,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309941346] [2021-12-17 04:45:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:21,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:21,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:21,592 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) [2021-12-17 04:45:21,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 04:45:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:21,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 04:45:21,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 866 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-12-17 04:45:24,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:24,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309941346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:24,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:24,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-12-17 04:45:24,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856404676] [2021-12-17 04:45:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:24,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 04:45:24,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:24,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 04:45:24,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-17 04:45:24,328 INFO L87 Difference]: Start difference. First operand 2318 states and 2538 transitions. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:24,855 INFO L93 Difference]: Finished difference Result 4990 states and 5440 transitions. [2021-12-17 04:45:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:45:24,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 565 [2021-12-17 04:45:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:24,862 INFO L225 Difference]: With dead ends: 4990 [2021-12-17 04:45:24,862 INFO L226 Difference]: Without dead ends: 2318 [2021-12-17 04:45:24,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-17 04:45:24,865 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 333 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:24,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 50 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 04:45:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-12-17 04:45:24,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2140. [2021-12-17 04:45:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.0593735390369332) internal successors, (2266), 2139 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2266 transitions. [2021-12-17 04:45:24,895 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2266 transitions. Word has length 565 [2021-12-17 04:45:24,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:24,895 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2266 transitions. [2021-12-17 04:45:24,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2266 transitions. [2021-12-17 04:45:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2021-12-17 04:45:24,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:24,900 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:24,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:25,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-17 04:45:25,118 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:25,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1940762816, now seen corresponding path program 1 times [2021-12-17 04:45:25,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:25,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276691215] [2021-12-17 04:45:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:25,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 780 proven. 93 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-12-17 04:45:25,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:25,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276691215] [2021-12-17 04:45:25,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276691215] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:25,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103937326] [2021-12-17 04:45:25,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:25,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:25,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:25,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:45:25,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 04:45:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:25,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:45:25,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 873 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-12-17 04:45:26,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:26,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103937326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:26,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:26,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-17 04:45:26,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054071238] [2021-12-17 04:45:26,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:26,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:26,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:26,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:26,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:26,137 INFO L87 Difference]: Start difference. First operand 2140 states and 2266 transitions. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:26,498 INFO L93 Difference]: Finished difference Result 5346 states and 5672 transitions. [2021-12-17 04:45:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:26,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 639 [2021-12-17 04:45:26,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:26,505 INFO L225 Difference]: With dead ends: 5346 [2021-12-17 04:45:26,505 INFO L226 Difference]: Without dead ends: 3208 [2021-12-17 04:45:26,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:26,528 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:26,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:45:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-12-17 04:45:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3208. [2021-12-17 04:45:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0526972248207047) internal successors, (3376), 3207 states have internal predecessors, (3376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3376 transitions. [2021-12-17 04:45:26,590 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3376 transitions. Word has length 639 [2021-12-17 04:45:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:26,591 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3376 transitions. [2021-12-17 04:45:26,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:26,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3376 transitions. [2021-12-17 04:45:26,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2021-12-17 04:45:26,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:26,612 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:26,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:26,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:26,829 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:26,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1898901820, now seen corresponding path program 1 times [2021-12-17 04:45:26,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:26,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459747069] [2021-12-17 04:45:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:26,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 1334 proven. 155 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-12-17 04:45:27,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:27,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459747069] [2021-12-17 04:45:27,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459747069] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:27,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541128026] [2021-12-17 04:45:27,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:27,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:27,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:27,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:45:27,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 04:45:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:27,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:45:27,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2021-12-17 04:45:28,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:28,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541128026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:28,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:28,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-17 04:45:28,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551434519] [2021-12-17 04:45:28,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:28,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:28,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 04:45:28,199 INFO L87 Difference]: Start difference. First operand 3208 states and 3376 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:28,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:28,595 INFO L93 Difference]: Finished difference Result 6948 states and 7342 transitions. [2021-12-17 04:45:28,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:28,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 794 [2021-12-17 04:45:28,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:28,606 INFO L225 Difference]: With dead ends: 6948 [2021-12-17 04:45:28,607 INFO L226 Difference]: Without dead ends: 3742 [2021-12-17 04:45:28,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 04:45:28,611 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 81 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:28,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 24 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:45:28,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-12-17 04:45:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2021-12-17 04:45:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.0553327987169205) internal successors, (3948), 3741 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 3948 transitions. [2021-12-17 04:45:28,665 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 3948 transitions. Word has length 794 [2021-12-17 04:45:28,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:28,666 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 3948 transitions. [2021-12-17 04:45:28,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:28,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 3948 transitions. [2021-12-17 04:45:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2021-12-17 04:45:28,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:28,675 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:28,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:28,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:28,900 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:28,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1777817371, now seen corresponding path program 1 times [2021-12-17 04:45:28,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:28,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116762269] [2021-12-17 04:45:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:28,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1413 proven. 155 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-12-17 04:45:29,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:29,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116762269] [2021-12-17 04:45:29,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116762269] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:29,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754967158] [2021-12-17 04:45:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:29,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:29,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:29,172 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:45:29,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 04:45:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:29,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 04:45:29,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1413 proven. 155 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-12-17 04:45:30,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 04:45:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1413 proven. 155 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-12-17 04:45:31,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754967158] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 04:45:31,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 04:45:31,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-17 04:45:31,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942107196] [2021-12-17 04:45:31,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 04:45:31,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 04:45:31,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:31,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 04:45:31,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:31,292 INFO L87 Difference]: Start difference. First operand 3742 states and 3948 transitions. Second operand has 6 states, 6 states have (on average 151.66666666666666) internal successors, (910), 6 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:31,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:31,830 INFO L93 Difference]: Finished difference Result 8372 states and 8845 transitions. [2021-12-17 04:45:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 04:45:31,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 151.66666666666666) internal successors, (910), 6 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 823 [2021-12-17 04:45:31,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:31,840 INFO L225 Difference]: With dead ends: 8372 [2021-12-17 04:45:31,840 INFO L226 Difference]: Without dead ends: 4632 [2021-12-17 04:45:31,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1648 GetRequests, 1644 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:31,843 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 83 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:31,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 42 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 04:45:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2021-12-17 04:45:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4276. [2021-12-17 04:45:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4275 states have (on average 1.0570760233918128) internal successors, (4519), 4275 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:31,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 4519 transitions. [2021-12-17 04:45:31,881 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 4519 transitions. Word has length 823 [2021-12-17 04:45:31,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:31,882 INFO L470 AbstractCegarLoop]: Abstraction has 4276 states and 4519 transitions. [2021-12-17 04:45:31,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.66666666666666) internal successors, (910), 6 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:31,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 4519 transitions. [2021-12-17 04:45:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2021-12-17 04:45:31,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:31,890 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:31,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-17 04:45:32,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-17 04:45:32,103 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1631092303, now seen corresponding path program 1 times [2021-12-17 04:45:32,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:32,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898576345] [2021-12-17 04:45:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:32,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 1613 proven. 93 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2021-12-17 04:45:32,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:32,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898576345] [2021-12-17 04:45:32,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898576345] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:32,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845593811] [2021-12-17 04:45:32,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:32,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:32,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:32,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:45:32,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-17 04:45:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:32,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 04:45:32,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 1706 proven. 0 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2021-12-17 04:45:33,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:33,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845593811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:33,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:33,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-17 04:45:33,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032743355] [2021-12-17 04:45:33,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:33,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:33,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:33,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:33,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:33,684 INFO L87 Difference]: Start difference. First operand 4276 states and 4519 transitions. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:34,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:34,047 INFO L93 Difference]: Finished difference Result 8728 states and 9216 transitions. [2021-12-17 04:45:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:34,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 913 [2021-12-17 04:45:34,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:34,053 INFO L225 Difference]: With dead ends: 8728 [2021-12-17 04:45:34,053 INFO L226 Difference]: Without dead ends: 4454 [2021-12-17 04:45:34,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 912 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:34,064 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:34,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 41 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:45:34,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2021-12-17 04:45:34,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4276. [2021-12-17 04:45:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4275 states have (on average 1.056374269005848) internal successors, (4516), 4275 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 4516 transitions. [2021-12-17 04:45:34,094 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 4516 transitions. Word has length 913 [2021-12-17 04:45:34,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:34,094 INFO L470 AbstractCegarLoop]: Abstraction has 4276 states and 4516 transitions. [2021-12-17 04:45:34,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 4516 transitions. [2021-12-17 04:45:34,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2021-12-17 04:45:34,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:34,103 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:34,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:34,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-17 04:45:34,316 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:34,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:34,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1968132824, now seen corresponding path program 1 times [2021-12-17 04:45:34,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:34,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72706461] [2021-12-17 04:45:34,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:34,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-12-17 04:45:34,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:34,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72706461] [2021-12-17 04:45:34,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72706461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:34,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:34,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:45:34,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227659985] [2021-12-17 04:45:34,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:34,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:34,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:34,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:34,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:34,538 INFO L87 Difference]: Start difference. First operand 4276 states and 4516 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:34,882 INFO L93 Difference]: Finished difference Result 8550 states and 9030 transitions. [2021-12-17 04:45:34,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:34,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 990 [2021-12-17 04:45:34,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:34,888 INFO L225 Difference]: With dead ends: 8550 [2021-12-17 04:45:34,888 INFO L226 Difference]: Without dead ends: 4276 [2021-12-17 04:45:34,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:34,891 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 50 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:34,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 213 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:45:34,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-12-17 04:45:34,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4276. [2021-12-17 04:45:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4275 states have (on average 1.0463157894736843) internal successors, (4473), 4275 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 4473 transitions. [2021-12-17 04:45:34,923 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 4473 transitions. Word has length 990 [2021-12-17 04:45:34,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:34,923 INFO L470 AbstractCegarLoop]: Abstraction has 4276 states and 4473 transitions. [2021-12-17 04:45:34,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:34,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 4473 transitions. [2021-12-17 04:45:34,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2021-12-17 04:45:34,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:34,932 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:34,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 04:45:34,933 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:34,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash -387054434, now seen corresponding path program 1 times [2021-12-17 04:45:34,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:34,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459378690] [2021-12-17 04:45:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:34,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3057 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 2762 trivial. 0 not checked. [2021-12-17 04:45:35,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:35,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459378690] [2021-12-17 04:45:35,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459378690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:35,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:35,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:45:35,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396412986] [2021-12-17 04:45:35,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:35,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:45:35,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:45:35,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:35,265 INFO L87 Difference]: Start difference. First operand 4276 states and 4473 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:35,684 INFO L93 Difference]: Finished difference Result 8392 states and 8775 transitions. [2021-12-17 04:45:35,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:45:35,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1031 [2021-12-17 04:45:35,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:35,689 INFO L225 Difference]: With dead ends: 8392 [2021-12-17 04:45:35,690 INFO L226 Difference]: Without dead ends: 4098 [2021-12-17 04:45:35,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:35,693 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 30 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:35,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 17 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 04:45:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2021-12-17 04:45:35,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 4098. [2021-12-17 04:45:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.044422748352453) internal successors, (4279), 4097 states have internal predecessors, (4279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4279 transitions. [2021-12-17 04:45:35,728 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4279 transitions. Word has length 1031 [2021-12-17 04:45:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:35,728 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 4279 transitions. [2021-12-17 04:45:35,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4279 transitions. [2021-12-17 04:45:35,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2021-12-17 04:45:35,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:35,737 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:35,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 04:45:35,737 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:35,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1310024199, now seen corresponding path program 1 times [2021-12-17 04:45:35,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:35,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401253704] [2021-12-17 04:45:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:35,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 2476 proven. 72 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2021-12-17 04:45:35,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:35,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401253704] [2021-12-17 04:45:35,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401253704] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:35,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546242151] [2021-12-17 04:45:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:35,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:35,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:35,992 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:45:36,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-17 04:45:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:36,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 04:45:36,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 2189 proven. 0 refuted. 0 times theorem prover too weak. 1340 trivial. 0 not checked. [2021-12-17 04:45:37,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:37,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546242151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:37,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:37,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-12-17 04:45:37,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89166615] [2021-12-17 04:45:37,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:37,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:45:37,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:37,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:45:37,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:37,816 INFO L87 Difference]: Start difference. First operand 4098 states and 4279 transitions. Second operand has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:38,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:38,416 INFO L93 Difference]: Finished difference Result 8550 states and 8934 transitions. [2021-12-17 04:45:38,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:45:38,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1036 [2021-12-17 04:45:38,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:38,422 INFO L225 Difference]: With dead ends: 8550 [2021-12-17 04:45:38,422 INFO L226 Difference]: Without dead ends: 4454 [2021-12-17 04:45:38,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 1035 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:38,426 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 115 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:38,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 36 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 04:45:38,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2021-12-17 04:45:38,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4454. [2021-12-17 04:45:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 1.0428924320682686) internal successors, (4644), 4453 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 4644 transitions. [2021-12-17 04:45:38,505 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 4644 transitions. Word has length 1036 [2021-12-17 04:45:38,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:38,506 INFO L470 AbstractCegarLoop]: Abstraction has 4454 states and 4644 transitions. [2021-12-17 04:45:38,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:38,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 4644 transitions. [2021-12-17 04:45:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1184 [2021-12-17 04:45:38,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:38,520 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:38,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:38,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-17 04:45:38,739 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:38,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1616010734, now seen corresponding path program 1 times [2021-12-17 04:45:38,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:38,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435013758] [2021-12-17 04:45:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:38,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4663 backedges. 1978 proven. 0 refuted. 0 times theorem prover too weak. 2685 trivial. 0 not checked. [2021-12-17 04:45:39,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435013758] [2021-12-17 04:45:39,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435013758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:39,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:39,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:45:39,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521711263] [2021-12-17 04:45:39,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:39,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:39,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:39,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:39,065 INFO L87 Difference]: Start difference. First operand 4454 states and 4644 transitions. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:39,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:39,433 INFO L93 Difference]: Finished difference Result 9084 states and 9474 transitions. [2021-12-17 04:45:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:39,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1183 [2021-12-17 04:45:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:39,440 INFO L225 Difference]: With dead ends: 9084 [2021-12-17 04:45:39,441 INFO L226 Difference]: Without dead ends: 4632 [2021-12-17 04:45:39,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:39,446 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 71 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:39,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 221 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:45:39,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2021-12-17 04:45:39,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4454. [2021-12-17 04:45:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 1.04176959353245) internal successors, (4639), 4453 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 4639 transitions. [2021-12-17 04:45:39,533 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 4639 transitions. Word has length 1183 [2021-12-17 04:45:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:39,534 INFO L470 AbstractCegarLoop]: Abstraction has 4454 states and 4639 transitions. [2021-12-17 04:45:39,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 4639 transitions. [2021-12-17 04:45:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1396 [2021-12-17 04:45:39,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:39,548 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:39,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 04:45:39,548 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:39,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:39,550 INFO L85 PathProgramCache]: Analyzing trace with hash 126987919, now seen corresponding path program 1 times [2021-12-17 04:45:39,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:39,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920331388] [2021-12-17 04:45:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:39,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5983 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 5577 trivial. 0 not checked. [2021-12-17 04:45:39,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:39,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920331388] [2021-12-17 04:45:39,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920331388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:39,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:39,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:45:39,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106139540] [2021-12-17 04:45:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:39,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:39,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:39,884 INFO L87 Difference]: Start difference. First operand 4454 states and 4639 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:40,262 INFO L93 Difference]: Finished difference Result 8906 states and 9276 transitions. [2021-12-17 04:45:40,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:40,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1395 [2021-12-17 04:45:40,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:40,270 INFO L225 Difference]: With dead ends: 8906 [2021-12-17 04:45:40,270 INFO L226 Difference]: Without dead ends: 4454 [2021-12-17 04:45:40,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:40,275 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 144 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:40,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 201 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:45:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2021-12-17 04:45:40,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4454. [2021-12-17 04:45:40,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 1.0375028070963395) internal successors, (4620), 4453 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 4620 transitions. [2021-12-17 04:45:40,344 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 4620 transitions. Word has length 1395 [2021-12-17 04:45:40,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:40,345 INFO L470 AbstractCegarLoop]: Abstraction has 4454 states and 4620 transitions. [2021-12-17 04:45:40,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:40,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 4620 transitions. [2021-12-17 04:45:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1498 [2021-12-17 04:45:40,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:40,372 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:40,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 04:45:40,373 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:40,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash 674872807, now seen corresponding path program 1 times [2021-12-17 04:45:40,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:40,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672640168] [2021-12-17 04:45:40,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:40,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 7083 backedges. 4482 proven. 252 refuted. 0 times theorem prover too weak. 2349 trivial. 0 not checked. [2021-12-17 04:45:40,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:40,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672640168] [2021-12-17 04:45:40,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672640168] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:40,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119092928] [2021-12-17 04:45:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:40,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:40,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:40,940 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:45:40,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-17 04:45:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:41,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 04:45:41,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7083 backedges. 2470 proven. 0 refuted. 0 times theorem prover too weak. 4613 trivial. 0 not checked. [2021-12-17 04:45:42,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:42,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119092928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:42,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:42,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-17 04:45:42,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860927253] [2021-12-17 04:45:42,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:42,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:42,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:42,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:42,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:42,959 INFO L87 Difference]: Start difference. First operand 4454 states and 4620 transitions. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:43,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:43,221 INFO L93 Difference]: Finished difference Result 8906 states and 9238 transitions. [2021-12-17 04:45:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:43,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1497 [2021-12-17 04:45:43,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:43,227 INFO L225 Difference]: With dead ends: 8906 [2021-12-17 04:45:43,228 INFO L226 Difference]: Without dead ends: 4454 [2021-12-17 04:45:43,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1501 GetRequests, 1496 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:43,232 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 74 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:43,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 216 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 04:45:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2021-12-17 04:45:43,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4276. [2021-12-17 04:45:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4275 states have (on average 1.0353216374269005) internal successors, (4426), 4275 states have internal predecessors, (4426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 4426 transitions. [2021-12-17 04:45:43,278 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 4426 transitions. Word has length 1497 [2021-12-17 04:45:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:43,279 INFO L470 AbstractCegarLoop]: Abstraction has 4276 states and 4426 transitions. [2021-12-17 04:45:43,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 4426 transitions. [2021-12-17 04:45:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1651 [2021-12-17 04:45:43,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:43,298 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:43,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:43,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-17 04:45:43,513 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:43,513 INFO L85 PathProgramCache]: Analyzing trace with hash -339858598, now seen corresponding path program 1 times [2021-12-17 04:45:43,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:43,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447110686] [2021-12-17 04:45:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:43,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8594 backedges. 4979 proven. 0 refuted. 0 times theorem prover too weak. 3615 trivial. 0 not checked. [2021-12-17 04:45:44,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:44,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447110686] [2021-12-17 04:45:44,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447110686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:44,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:44,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 04:45:44,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43455665] [2021-12-17 04:45:44,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:44,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 04:45:44,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:44,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 04:45:44,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:44,153 INFO L87 Difference]: Start difference. First operand 4276 states and 4426 transitions. Second operand has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:45,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:45,257 INFO L93 Difference]: Finished difference Result 11057 states and 11485 transitions. [2021-12-17 04:45:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 04:45:45,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1650 [2021-12-17 04:45:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:45,281 INFO L225 Difference]: With dead ends: 11057 [2021-12-17 04:45:45,281 INFO L226 Difference]: Without dead ends: 6234 [2021-12-17 04:45:45,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:45,285 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 138 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:45,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 43 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 04:45:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-12-17 04:45:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 5344. [2021-12-17 04:45:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.0254538648699232) internal successors, (5479), 5343 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 5479 transitions. [2021-12-17 04:45:45,364 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 5479 transitions. Word has length 1650 [2021-12-17 04:45:45,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:45,365 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 5479 transitions. [2021-12-17 04:45:45,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 5479 transitions. [2021-12-17 04:45:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1697 [2021-12-17 04:45:45,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:45,383 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:45,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 04:45:45,383 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:45,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1424430251, now seen corresponding path program 1 times [2021-12-17 04:45:45,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:45,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975965155] [2021-12-17 04:45:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:45,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9422 backedges. 2609 proven. 0 refuted. 0 times theorem prover too weak. 6813 trivial. 0 not checked. [2021-12-17 04:45:45,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:45,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975965155] [2021-12-17 04:45:45,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975965155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:45,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:45,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:45:45,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519735785] [2021-12-17 04:45:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:45,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:45,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:45,792 INFO L87 Difference]: Start difference. First operand 5344 states and 5479 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:46,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:46,022 INFO L93 Difference]: Finished difference Result 11220 states and 11493 transitions. [2021-12-17 04:45:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:46,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1696 [2021-12-17 04:45:46,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:46,027 INFO L225 Difference]: With dead ends: 11220 [2021-12-17 04:45:46,027 INFO L226 Difference]: Without dead ends: 5700 [2021-12-17 04:45:46,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:45:46,036 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 104 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:46,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 215 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 04:45:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2021-12-17 04:45:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5166. [2021-12-17 04:45:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.022652468538238) internal successors, (5282), 5165 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 5282 transitions. [2021-12-17 04:45:46,073 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 5282 transitions. Word has length 1696 [2021-12-17 04:45:46,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:46,073 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 5282 transitions. [2021-12-17 04:45:46,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:46,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 5282 transitions. [2021-12-17 04:45:46,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1730 [2021-12-17 04:45:46,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:46,122 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:46,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 04:45:46,122 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:46,123 INFO L85 PathProgramCache]: Analyzing trace with hash 19375012, now seen corresponding path program 1 times [2021-12-17 04:45:46,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:46,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806253424] [2021-12-17 04:45:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:46,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9775 backedges. 6630 proven. 0 refuted. 0 times theorem prover too weak. 3145 trivial. 0 not checked. [2021-12-17 04:45:46,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:46,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806253424] [2021-12-17 04:45:46,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806253424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:46,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:46,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 04:45:46,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731135681] [2021-12-17 04:45:46,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:46,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:45:46,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:46,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:45:46,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:46,586 INFO L87 Difference]: Start difference. First operand 5166 states and 5282 transitions. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:47,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:47,128 INFO L93 Difference]: Finished difference Result 10330 states and 10567 transitions. [2021-12-17 04:45:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:45:47,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1729 [2021-12-17 04:45:47,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:47,134 INFO L225 Difference]: With dead ends: 10330 [2021-12-17 04:45:47,134 INFO L226 Difference]: Without dead ends: 5344 [2021-12-17 04:45:47,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:47,138 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 79 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:47,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 209 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 04:45:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2021-12-17 04:45:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 4988. [2021-12-17 04:45:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.0180469219971926) internal successors, (5077), 4987 states have internal predecessors, (5077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5077 transitions. [2021-12-17 04:45:47,175 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5077 transitions. Word has length 1729 [2021-12-17 04:45:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:47,175 INFO L470 AbstractCegarLoop]: Abstraction has 4988 states and 5077 transitions. [2021-12-17 04:45:47,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5077 transitions. [2021-12-17 04:45:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1747 [2021-12-17 04:45:47,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:47,196 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:47,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 04:45:47,197 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:47,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:47,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1276225934, now seen corresponding path program 1 times [2021-12-17 04:45:47,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:47,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528386108] [2021-12-17 04:45:47,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:47,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9575 backedges. 2804 proven. 1045 refuted. 0 times theorem prover too weak. 5726 trivial. 0 not checked. [2021-12-17 04:45:47,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:47,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528386108] [2021-12-17 04:45:47,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528386108] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:47,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804208759] [2021-12-17 04:45:47,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:47,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:47,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:47,675 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:45:47,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-17 04:45:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:47,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:45:48,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9575 backedges. 3849 proven. 0 refuted. 0 times theorem prover too weak. 5726 trivial. 0 not checked. [2021-12-17 04:45:49,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:49,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804208759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:49,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:49,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-17 04:45:49,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312634336] [2021-12-17 04:45:49,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:49,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:49,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:49,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:49,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:49,567 INFO L87 Difference]: Start difference. First operand 4988 states and 5077 transitions. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:49,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:49,777 INFO L93 Difference]: Finished difference Result 9440 states and 9603 transitions. [2021-12-17 04:45:49,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:49,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1746 [2021-12-17 04:45:49,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:49,781 INFO L225 Difference]: With dead ends: 9440 [2021-12-17 04:45:49,782 INFO L226 Difference]: Without dead ends: 3742 [2021-12-17 04:45:49,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1749 GetRequests, 1745 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:45:49,789 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:49,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 217 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 04:45:49,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-12-17 04:45:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3564. [2021-12-17 04:45:49,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.0123491439797923) internal successors, (3607), 3563 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 3607 transitions. [2021-12-17 04:45:49,847 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 3607 transitions. Word has length 1746 [2021-12-17 04:45:49,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:49,847 INFO L470 AbstractCegarLoop]: Abstraction has 3564 states and 3607 transitions. [2021-12-17 04:45:49,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 3607 transitions. [2021-12-17 04:45:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1818 [2021-12-17 04:45:49,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:49,889 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:49,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:50,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-17 04:45:50,115 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1727618608, now seen corresponding path program 1 times [2021-12-17 04:45:50,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:50,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984590562] [2021-12-17 04:45:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:50,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:50,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10935 backedges. 2784 proven. 0 refuted. 0 times theorem prover too weak. 8151 trivial. 0 not checked. [2021-12-17 04:45:50,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:50,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984590562] [2021-12-17 04:45:50,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984590562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:50,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:50,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 04:45:50,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688745079] [2021-12-17 04:45:50,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:50,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 04:45:50,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:50,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 04:45:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 04:45:50,686 INFO L87 Difference]: Start difference. First operand 3564 states and 3607 transitions. Second operand has 5 states, 5 states have (on average 66.4) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:51,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:51,186 INFO L93 Difference]: Finished difference Result 4283 states and 4340 transitions. [2021-12-17 04:45:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 04:45:51,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1817 [2021-12-17 04:45:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:51,189 INFO L225 Difference]: With dead ends: 4283 [2021-12-17 04:45:51,189 INFO L226 Difference]: Without dead ends: 4098 [2021-12-17 04:45:51,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 04:45:51,190 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 105 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:51,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 20 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 04:45:51,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2021-12-17 04:45:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3920. [2021-12-17 04:45:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3919 states have (on average 1.0135238581270731) internal successors, (3972), 3919 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:51,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 3972 transitions. [2021-12-17 04:45:51,215 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 3972 transitions. Word has length 1817 [2021-12-17 04:45:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:51,216 INFO L470 AbstractCegarLoop]: Abstraction has 3920 states and 3972 transitions. [2021-12-17 04:45:51,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 3972 transitions. [2021-12-17 04:45:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2019 [2021-12-17 04:45:51,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:51,241 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:51,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 04:45:51,241 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:51,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1233211586, now seen corresponding path program 1 times [2021-12-17 04:45:51,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:51,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638177422] [2021-12-17 04:45:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:51,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 9347 proven. 184 refuted. 0 times theorem prover too weak. 4293 trivial. 0 not checked. [2021-12-17 04:45:51,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:51,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638177422] [2021-12-17 04:45:51,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638177422] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:45:51,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461098545] [2021-12-17 04:45:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:51,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:45:51,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:45:51,900 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:45:51,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-17 04:45:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:52,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 2465 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 04:45:52,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:45:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13824 backedges. 4628 proven. 0 refuted. 0 times theorem prover too weak. 9196 trivial. 0 not checked. [2021-12-17 04:45:54,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:45:54,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461098545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:54,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:45:54,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-17 04:45:54,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160057465] [2021-12-17 04:45:54,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:54,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:45:54,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:45:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:54,590 INFO L87 Difference]: Start difference. First operand 3920 states and 3972 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:54,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:54,904 INFO L93 Difference]: Finished difference Result 5702 states and 5792 transitions. [2021-12-17 04:45:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:45:54,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2018 [2021-12-17 04:45:54,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:54,908 INFO L225 Difference]: With dead ends: 5702 [2021-12-17 04:45:54,908 INFO L226 Difference]: Without dead ends: 3920 [2021-12-17 04:45:54,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2022 GetRequests, 2017 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:45:54,910 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 55 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:54,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 204 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:45:54,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2021-12-17 04:45:54,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3564. [2021-12-17 04:45:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.0101038450743756) internal successors, (3599), 3563 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:54,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 3599 transitions. [2021-12-17 04:45:54,932 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 3599 transitions. Word has length 2018 [2021-12-17 04:45:54,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:54,932 INFO L470 AbstractCegarLoop]: Abstraction has 3564 states and 3599 transitions. [2021-12-17 04:45:54,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:54,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 3599 transitions. [2021-12-17 04:45:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2120 [2021-12-17 04:45:54,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:45:54,981 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:55,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-17 04:45:55,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-17 04:45:55,198 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:45:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:45:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2140269625, now seen corresponding path program 1 times [2021-12-17 04:45:55,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:45:55,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052251440] [2021-12-17 04:45:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:45:55,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:45:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:45:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14529 backedges. 3210 proven. 0 refuted. 0 times theorem prover too weak. 11319 trivial. 0 not checked. [2021-12-17 04:45:56,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:45:56,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052251440] [2021-12-17 04:45:56,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052251440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:45:56,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:45:56,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 04:45:56,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608411473] [2021-12-17 04:45:56,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:45:56,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:45:56,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:45:56,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:45:56,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:56,155 INFO L87 Difference]: Start difference. First operand 3564 states and 3599 transitions. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:45:56,571 INFO L93 Difference]: Finished difference Result 3569 states and 3604 transitions. [2021-12-17 04:45:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:45:56,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2119 [2021-12-17 04:45:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:45:56,573 INFO L225 Difference]: With dead ends: 3569 [2021-12-17 04:45:56,573 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 04:45:56,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:45:56,575 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 88 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:45:56,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 15 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 04:45:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 04:45:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 04:45:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:56,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 04:45:56,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2119 [2021-12-17 04:45:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:45:56,576 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 04:45:56,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:45:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 04:45:56,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 04:45:56,578 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 04:45:56,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 04:45:56,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 04:45:58,185 INFO L858 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-12-17 04:45:58,185 INFO L858 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-12-17 04:45:58,185 INFO L858 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-12-17 04:45:58,185 INFO L858 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-12-17 04:45:58,186 INFO L858 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-12-17 04:45:58,187 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-12-17 04:45:58,188 INFO L858 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-12-17 04:45:58,189 INFO L858 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 131) no Hoare annotation was computed. [2021-12-17 04:45:58,190 INFO L858 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-12-17 04:45:58,191 INFO L858 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-12-17 04:45:58,192 INFO L858 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-12-17 04:45:58,192 INFO L858 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-12-17 04:45:58,193 INFO L858 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-12-17 04:45:58,193 INFO L858 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,193 INFO L858 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,193 INFO L858 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,193 INFO L858 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-12-17 04:45:58,194 INFO L858 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-12-17 04:45:58,194 INFO L858 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-12-17 04:45:58,194 INFO L858 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-12-17 04:45:58,194 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-12-17 04:45:58,194 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-12-17 04:45:58,194 INFO L858 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-12-17 04:45:58,194 INFO L858 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-12-17 04:45:58,194 INFO L858 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,194 INFO L858 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,194 INFO L858 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,195 INFO L858 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-12-17 04:45:58,195 INFO L858 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-12-17 04:45:58,195 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-12-17 04:45:58,195 INFO L858 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-12-17 04:45:58,195 INFO L858 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-12-17 04:45:58,195 INFO L858 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-12-17 04:45:58,195 INFO L858 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-12-17 04:45:58,195 INFO L858 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-12-17 04:45:58,195 INFO L858 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,196 INFO L858 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,196 INFO L858 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,196 INFO L858 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-12-17 04:45:58,196 INFO L858 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-12-17 04:45:58,196 INFO L858 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-12-17 04:45:58,196 INFO L858 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-12-17 04:45:58,196 INFO L858 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-12-17 04:45:58,196 INFO L858 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-12-17 04:45:58,196 INFO L858 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-12-17 04:45:58,197 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-12-17 04:45:58,197 INFO L858 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,197 INFO L858 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,197 INFO L858 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-12-17 04:45:58,197 INFO L858 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-12-17 04:45:58,197 INFO L858 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-12-17 04:45:58,197 INFO L858 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-12-17 04:45:58,197 INFO L858 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-12-17 04:45:58,197 INFO L858 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-12-17 04:45:58,197 INFO L858 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-12-17 04:45:58,198 INFO L858 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-12-17 04:45:58,198 INFO L858 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,198 INFO L858 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,198 INFO L858 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-12-17 04:45:58,198 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 04:45:58,198 INFO L858 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-12-17 04:45:58,198 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-12-17 04:45:58,198 INFO L858 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-12-17 04:45:58,198 INFO L858 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-12-17 04:45:58,198 INFO L858 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-12-17 04:45:58,199 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,199 INFO L858 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,199 INFO L854 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse6 (<= 0 (+ ~a12~0 41))) (.cse4 (= ~a15~0 7)) (.cse15 (<= 7 ~a21~0)) (.cse11 (<= (+ (div (+ ~a12~0 (- 600066)) 5) 14) 0)) (.cse9 (<= ~a21~0 6)) (.cse2 (<= ~a12~0 11)) (.cse18 (< 80 ~a12~0)) (.cse8 (<= 95382 ~a12~0)) (.cse17 (<= ~a15~0 7)) (.cse5 (<= 10 ~a21~0)) (.cse3 (+ ~a12~0 43)) (.cse16 (<= ~a15~0 6)) (.cse0 (<= ~a15~0 8)) (.cse7 (<= ~a21~0 7)) (.cse10 (<= 20 ~a12~0)) (.cse19 (<= ~a12~0 76)) (.cse12 (<= 9 ~a15~0)) (.cse1 (= ~a24~0 1)) (.cse13 (<= 8 ~a21~0)) (.cse14 (<= ~a21~0 8))) (or (and (<= 8 ~a15~0) .cse0 .cse1 .cse2 (< 0 .cse3) (<= 9 ~a21~0)) (and .cse4 (< 11 ~a12~0) .cse1 (<= ~a12~0 80) (= ~a21~0 9)) (and .cse5 .cse1 .cse6 .cse2) (and .cse0 .cse1 .cse6 .cse2 .cse7) (and (or (and .cse8 .cse9) (and .cse10 .cse5)) .cse1 .cse11) (and .cse12 .cse1 .cse6 .cse2 .cse13 .cse14) (and .cse15 .cse16 .cse7) (and .cse1 .cse17 .cse15 .cse7) (and .cse10 .cse5 .cse1 .cse0) (and (= ~a21~0 8) .cse4 .cse1 (<= (+ ~a12~0 44) 0)) (and .cse5 .cse1 .cse0 .cse17) (and (or (and .cse12 .cse13) (and .cse15 .cse7)) .cse1 .cse11 .cse18) (and .cse9 .cse2 .cse16) (and (<= ~a12~0 73282) .cse1 .cse18 .cse13 .cse14) (and .cse0 .cse1 (<= (+ ~a12~0 49) 0) .cse7) (and (or (and .cse10 .cse1 .cse14) (and .cse8 .cse1)) .cse17) (and .cse10 .cse0 .cse1 .cse19) (and .cse5 .cse1 (<= .cse3 0)) (and .cse1 .cse16) (and .cse10 .cse0 .cse1 .cse7) (and .cse10 .cse1 .cse13 .cse19 .cse14) (and (<= (+ ~a12~0 526767) 0) .cse12 .cse1 .cse13 .cse14))) [2021-12-17 04:45:58,199 INFO L858 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-12-17 04:45:58,199 INFO L858 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-12-17 04:45:58,199 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-12-17 04:45:58,200 INFO L858 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-12-17 04:45:58,200 INFO L858 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-12-17 04:45:58,200 INFO L858 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-12-17 04:45:58,200 INFO L858 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-12-17 04:45:58,200 INFO L858 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-12-17 04:45:58,200 INFO L858 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,200 INFO L858 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,200 INFO L861 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-12-17 04:45:58,200 INFO L858 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-12-17 04:45:58,200 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-12-17 04:45:58,201 INFO L858 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-12-17 04:45:58,201 INFO L858 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-12-17 04:45:58,201 INFO L858 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-12-17 04:45:58,201 INFO L858 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-12-17 04:45:58,201 INFO L858 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-12-17 04:45:58,201 INFO L858 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,201 INFO L858 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,201 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 04:45:58,201 INFO L858 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-12-17 04:45:58,201 INFO L858 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-12-17 04:45:58,202 INFO L858 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-12-17 04:45:58,202 INFO L858 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-12-17 04:45:58,202 INFO L858 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-12-17 04:45:58,202 INFO L858 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-12-17 04:45:58,202 INFO L858 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,202 INFO L858 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,202 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-12-17 04:45:58,202 INFO L858 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,202 INFO L858 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-12-17 04:45:58,203 INFO L854 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse6 (<= 0 (+ ~a12~0 41))) (.cse4 (= ~a15~0 7)) (.cse15 (<= 7 ~a21~0)) (.cse11 (<= (+ (div (+ ~a12~0 (- 600066)) 5) 14) 0)) (.cse9 (<= ~a21~0 6)) (.cse2 (<= ~a12~0 11)) (.cse18 (< 80 ~a12~0)) (.cse8 (<= 95382 ~a12~0)) (.cse17 (<= ~a15~0 7)) (.cse5 (<= 10 ~a21~0)) (.cse3 (+ ~a12~0 43)) (.cse16 (<= ~a15~0 6)) (.cse0 (<= ~a15~0 8)) (.cse7 (<= ~a21~0 7)) (.cse10 (<= 20 ~a12~0)) (.cse19 (<= ~a12~0 76)) (.cse12 (<= 9 ~a15~0)) (.cse1 (= ~a24~0 1)) (.cse13 (<= 8 ~a21~0)) (.cse14 (<= ~a21~0 8))) (or (and (<= 8 ~a15~0) .cse0 .cse1 .cse2 (< 0 .cse3) (<= 9 ~a21~0)) (and .cse4 (< 11 ~a12~0) .cse1 (<= ~a12~0 80) (= ~a21~0 9)) (and .cse5 .cse1 .cse6 .cse2) (and .cse0 .cse1 .cse6 .cse2 .cse7) (and (or (and .cse8 .cse9) (and .cse10 .cse5)) .cse1 .cse11) (and .cse12 .cse1 .cse6 .cse2 .cse13 .cse14) (and .cse15 .cse16 .cse7) (and .cse1 .cse17 .cse15 .cse7) (and .cse10 .cse5 .cse1 .cse0) (and (= ~a21~0 8) .cse4 .cse1 (<= (+ ~a12~0 44) 0)) (and .cse5 .cse1 .cse0 .cse17) (and (or (and .cse12 .cse13) (and .cse15 .cse7)) .cse1 .cse11 .cse18) (and .cse9 .cse2 .cse16) (and (<= ~a12~0 73282) .cse1 .cse18 .cse13 .cse14) (and .cse0 .cse1 (<= (+ ~a12~0 49) 0) .cse7) (and (or (and .cse10 .cse1 .cse14) (and .cse8 .cse1)) .cse17) (and .cse10 .cse0 .cse1 .cse19) (and .cse5 .cse1 (<= .cse3 0)) (and .cse1 .cse16) (and .cse10 .cse0 .cse1 .cse7) (and .cse10 .cse1 .cse13 .cse19 .cse14) (and (<= (+ ~a12~0 526767) 0) .cse12 .cse1 .cse13 .cse14))) [2021-12-17 04:45:58,203 INFO L858 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-12-17 04:45:58,203 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-12-17 04:45:58,203 INFO L858 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-12-17 04:45:58,203 INFO L858 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-12-17 04:45:58,203 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-12-17 04:45:58,203 INFO L858 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-12-17 04:45:58,203 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-12-17 04:45:58,203 INFO L858 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-12-17 04:45:58,204 INFO L858 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-12-17 04:45:58,204 INFO L858 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,204 INFO L858 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,204 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-12-17 04:45:58,204 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-12-17 04:45:58,204 INFO L858 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-12-17 04:45:58,204 INFO L858 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-12-17 04:45:58,204 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-12-17 04:45:58,207 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:45:58,208 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 04:45:58,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 04:45:58 BoogieIcfgContainer [2021-12-17 04:45:58,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 04:45:58,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 04:45:58,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 04:45:58,227 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 04:45:58,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:45:10" (3/4) ... [2021-12-17 04:45:58,229 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 04:45:58,252 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-17 04:45:58,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 04:45:58,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 04:45:58,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 04:45:58,323 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 04:45:58,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 04:45:58,324 INFO L158 Benchmark]: Toolchain (without parser) took 49670.12ms. Allocated memory was 98.6MB in the beginning and 914.4MB in the end (delta: 815.8MB). Free memory was 58.8MB in the beginning and 557.8MB in the end (delta: -499.0MB). Peak memory consumption was 316.1MB. Max. memory is 16.1GB. [2021-12-17 04:45:58,324 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 98.6MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 04:45:58,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.75ms. Allocated memory is still 98.6MB. Free memory was 58.6MB in the beginning and 52.3MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 04:45:58,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.70ms. Allocated memory is still 98.6MB. Free memory was 52.3MB in the beginning and 42.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 04:45:58,324 INFO L158 Benchmark]: Boogie Preprocessor took 90.27ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 42.7MB in the beginning and 88.3MB in the end (delta: -45.6MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2021-12-17 04:45:58,325 INFO L158 Benchmark]: RCFGBuilder took 928.88ms. Allocated memory is still 119.5MB. Free memory was 88.3MB in the beginning and 57.9MB in the end (delta: 30.3MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2021-12-17 04:45:58,325 INFO L158 Benchmark]: TraceAbstraction took 48041.24ms. Allocated memory was 119.5MB in the beginning and 914.4MB in the end (delta: 794.8MB). Free memory was 57.2MB in the beginning and 577.7MB in the end (delta: -520.5MB). Peak memory consumption was 545.9MB. Max. memory is 16.1GB. [2021-12-17 04:45:58,325 INFO L158 Benchmark]: Witness Printer took 96.81ms. Allocated memory is still 914.4MB. Free memory was 577.7MB in the beginning and 557.8MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-17 04:45:58,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 98.6MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.75ms. Allocated memory is still 98.6MB. Free memory was 58.6MB in the beginning and 52.3MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.70ms. Allocated memory is still 98.6MB. Free memory was 52.3MB in the beginning and 42.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.27ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 42.7MB in the beginning and 88.3MB in the end (delta: -45.6MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * RCFGBuilder took 928.88ms. Allocated memory is still 119.5MB. Free memory was 88.3MB in the beginning and 57.9MB in the end (delta: 30.3MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. * TraceAbstraction took 48041.24ms. Allocated memory was 119.5MB in the beginning and 914.4MB in the end (delta: 794.8MB). Free memory was 57.2MB in the beginning and 577.7MB in the end (delta: -520.5MB). Peak memory consumption was 545.9MB. Max. memory is 16.1GB. * Witness Printer took 96.81ms. Allocated memory is still 914.4MB. Free memory was 577.7MB in the beginning and 557.8MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 131]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.0s, OverallIterations: 28, TraceHistogramMax: 18, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3256 SdHoareTripleChecker+Valid, 12.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3256 mSDsluCounter, 3071 SdHoareTripleChecker+Invalid, 9.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 191 mSDsCounter, 1463 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16622 IncrementalHoareTripleChecker+Invalid, 18085 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1463 mSolverCounterUnsat, 2880 mSDtfsCounter, 16622 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12497 GetRequests, 12411 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5344occurred in iteration=22, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 28 MinimizatonAttempts, 5162 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 81 NumberOfFragments, 715 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3276 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3874 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 23.2s InterpolantComputationTime, 38220 NumberOfCodeBlocks, 38220 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 39001 ConstructedInterpolants, 0 QuantifiedInterpolants, 111932 SizeOfPredicates, 0 NumberOfNonLiveVariables, 14521 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 42 InterpolantComputations, 27 PerfectInterpolantSequences, 160615/163184 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((8 <= a15 && a15 <= 8) && a24 == 1) && a12 <= 11) && 0 < a12 + 43) && 9 <= a21) || ((((a15 == 7 && 11 < a12) && a24 == 1) && a12 <= 80) && a21 == 9)) || (((10 <= a21 && a24 == 1) && 0 <= a12 + 41) && a12 <= 11)) || ((((a15 <= 8 && a24 == 1) && 0 <= a12 + 41) && a12 <= 11) && a21 <= 7)) || ((((95382 <= a12 && a21 <= 6) || (20 <= a12 && 10 <= a21)) && a24 == 1) && (a12 + -600066) / 5 + 14 <= 0)) || (((((9 <= a15 && a24 == 1) && 0 <= a12 + 41) && a12 <= 11) && 8 <= a21) && a21 <= 8)) || ((7 <= a21 && a15 <= 6) && a21 <= 7)) || (((a24 == 1 && a15 <= 7) && 7 <= a21) && a21 <= 7)) || (((20 <= a12 && 10 <= a21) && a24 == 1) && a15 <= 8)) || (((a21 == 8 && a15 == 7) && a24 == 1) && a12 + 44 <= 0)) || (((10 <= a21 && a24 == 1) && a15 <= 8) && a15 <= 7)) || (((((9 <= a15 && 8 <= a21) || (7 <= a21 && a21 <= 7)) && a24 == 1) && (a12 + -600066) / 5 + 14 <= 0) && 80 < a12)) || ((a21 <= 6 && a12 <= 11) && a15 <= 6)) || ((((a12 <= 73282 && a24 == 1) && 80 < a12) && 8 <= a21) && a21 <= 8)) || (((a15 <= 8 && a24 == 1) && a12 + 49 <= 0) && a21 <= 7)) || ((((20 <= a12 && a24 == 1) && a21 <= 8) || (95382 <= a12 && a24 == 1)) && a15 <= 7)) || (((20 <= a12 && a15 <= 8) && a24 == 1) && a12 <= 76)) || ((10 <= a21 && a24 == 1) && a12 + 43 <= 0)) || (a24 == 1 && a15 <= 6)) || (((20 <= a12 && a15 <= 8) && a24 == 1) && a21 <= 7)) || ((((20 <= a12 && a24 == 1) && 8 <= a21) && a12 <= 76) && a21 <= 8)) || ((((a12 + 526767 <= 0 && 9 <= a15) && a24 == 1) && 8 <= a21) && a21 <= 8) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((8 <= a15 && a15 <= 8) && a24 == 1) && a12 <= 11) && 0 < a12 + 43) && 9 <= a21) || ((((a15 == 7 && 11 < a12) && a24 == 1) && a12 <= 80) && a21 == 9)) || (((10 <= a21 && a24 == 1) && 0 <= a12 + 41) && a12 <= 11)) || ((((a15 <= 8 && a24 == 1) && 0 <= a12 + 41) && a12 <= 11) && a21 <= 7)) || ((((95382 <= a12 && a21 <= 6) || (20 <= a12 && 10 <= a21)) && a24 == 1) && (a12 + -600066) / 5 + 14 <= 0)) || (((((9 <= a15 && a24 == 1) && 0 <= a12 + 41) && a12 <= 11) && 8 <= a21) && a21 <= 8)) || ((7 <= a21 && a15 <= 6) && a21 <= 7)) || (((a24 == 1 && a15 <= 7) && 7 <= a21) && a21 <= 7)) || (((20 <= a12 && 10 <= a21) && a24 == 1) && a15 <= 8)) || (((a21 == 8 && a15 == 7) && a24 == 1) && a12 + 44 <= 0)) || (((10 <= a21 && a24 == 1) && a15 <= 8) && a15 <= 7)) || (((((9 <= a15 && 8 <= a21) || (7 <= a21 && a21 <= 7)) && a24 == 1) && (a12 + -600066) / 5 + 14 <= 0) && 80 < a12)) || ((a21 <= 6 && a12 <= 11) && a15 <= 6)) || ((((a12 <= 73282 && a24 == 1) && 80 < a12) && 8 <= a21) && a21 <= 8)) || (((a15 <= 8 && a24 == 1) && a12 + 49 <= 0) && a21 <= 7)) || ((((20 <= a12 && a24 == 1) && a21 <= 8) || (95382 <= a12 && a24 == 1)) && a15 <= 7)) || (((20 <= a12 && a15 <= 8) && a24 == 1) && a12 <= 76)) || ((10 <= a21 && a24 == 1) && a12 + 43 <= 0)) || (a24 == 1 && a15 <= 6)) || (((20 <= a12 && a15 <= 8) && a24 == 1) && a21 <= 7)) || ((((20 <= a12 && a24 == 1) && 8 <= a21) && a12 <= 76) && a21 <= 8)) || ((((a12 + 526767 <= 0 && 9 <= a15) && a24 == 1) && 8 <= a21) && a21 <= 8) RESULT: Ultimate proved your program to be correct! [2021-12-17 04:45:58,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE